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Date: Fri, 19 Oct 2007 15:23:15 -0500 From: ggrundstrom@...effect.com To: ewg@...ts.openfabrics.org, rdreier@...co.com Cc: general@...ts.openfabrics.org, ggrundstrom@...effect.com, netdev@...r.kernel.org Subject: [PATCH 11/14 v2] nes: OpenFabrics kernel verbs OpenFabrics kernel verbs provider routines. Signed-off-by: Glenn Grundstrom <ggrundstrom@...effect.com> --- --- NULL 1969-12-31 18:00:00.000000000 -0600 +++ ofa_kernel-1.3/drivers/infiniband/hw/nes/nes_verbs.c 2007-10-19 10:07:14.000000000 -0500 @@ -0,0 +1,3836 @@ +/* + * Copyright (c) 2006 - 2007 NetEffect, 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 <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/random.h> +#include <asm/byteorder.h> + +#include <rdma/ib_verbs.h> +#include <rdma/iw_cm.h> +#include <rdma/ib_user_verbs.h> +#include "nes.h" +#ifndef OFED_1_2 +#include <rdma/ib_umem.h> +#endif + +atomic_t mod_qp_timouts; +atomic_t qps_created; +atomic_t sw_qps_destroyed; + + +/** + * nes_alloc_mw + */ +static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) { + unsigned long flags; + struct nes_pd *nespd = to_nespd(ibpd); + struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_cqp_request *cqp_request; + struct nes_mr *nesmr; + struct ib_mw *ibmw; + struct nes_hw_cqp_wqe *cqp_wqe; + int ret; + u32 stag; + u32 stag_index = 0; + u32 next_stag_index = 0; + u32 driver_key = 0; + u8 stag_key = 0; + + get_random_bytes(&next_stag_index, sizeof(next_stag_index)); + stag_key = (u8)next_stag_index; + + driver_key = 0; + + next_stag_index >>= 8; + next_stag_index %= nesadapter->max_mr; + + ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, + nesadapter->max_mr, &stag_index, &next_stag_index); + if (ret) { + return ERR_PTR(ret); + } + + nesmr = kmalloc(sizeof(*nesmr), GFP_KERNEL); + if (!nesmr) { + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + return ERR_PTR(-ENOMEM); + } + + stag = stag_index << 8; + stag |= driver_key; + stag += (u32)stag_key; + + nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n", + stag, stag_index); + + /* Register the region with the adapter */ + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + kfree(nesmr); + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + return ERR_PTR(-ENOMEM); + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = + cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ | + NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO | + NES_CQP_STAG_REM_ACC_EN); + + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = + cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = + cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = + cpu_to_le32(nespd->pd_id&0x00007fff); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_STAG_IDX] = cpu_to_le32(stag); + + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0; + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_NOT_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X.\n", + stag, ret, cqp_request->major_code, cqp_request->minor_code); + if ((!ret) || (cqp_request->major_code)) { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + kfree(nesmr); + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + if (!ret) { + return ERR_PTR(-ETIME); + } else { + return ERR_PTR(-ENOMEM); + } + } else { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + } + + nesmr->ibmw.rkey = stag; + nesmr->mode = IWNES_MEMREG_TYPE_MW; + ibmw = &nesmr->ibmw; + nesmr->pbl_4k = 0; + nesmr->pbls_used = 0; + + return ibmw; +} + + +/** + * nes_dealloc_mw + */ +static int nes_dealloc_mw(struct ib_mw *ibmw) +{ + struct nes_mr *nesmr = to_nesmw(ibmw); + struct nes_vnic *nesvnic = to_nesvnic(ibmw->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_hw_cqp_wqe *cqp_wqe; + struct nes_cqp_request *cqp_request; + int err = 0; + unsigned long flags; + int ret; + + /* Deallocate the window with the adapter */ + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); + return -ENOMEM; + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DEALLOCATE_STAG); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = + cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = + cpu_to_le32((u32)(((u64)(&nesdev->cqp)) >> 32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_STAG_IDX] = cpu_to_le32(ibmw->rkey); + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_NOT_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n", + ibmw->rkey); + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X.\n", + ret, cqp_request->major_code, cqp_request->minor_code); + if ((!ret) || (cqp_request->major_code)) { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + if (!ret) { + err = -ETIME; + } else { + err = -EIO; + } + } else { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + } + + nes_free_resource(nesadapter, nesadapter->allocated_mrs, + (ibmw->rkey&0x0fffff00) >> 8); + kfree(nesmr); + + return err; +} + + +/** + * nes_bind_mw + */ +static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw, + struct ib_mw_bind *ibmw_bind) +{ + u64 u64temp; + struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); + struct nes_device *nesdev = nesvnic->nesdev; + /* struct nes_mr *nesmr = to_nesmw(ibmw); */ + struct nes_qp *nesqp = to_nesqp(ibqp); + struct nes_hw_qp_wqe *wqe; + unsigned long flags = 0; + u32 head; + u32 wqe_misc = 0; + u32 qsize; + + if (nesqp->ibqp_state > IB_QPS_RTS) + return -EINVAL; + + spin_lock_irqsave(&nesqp->lock, flags); + + head = nesqp->hwqp.sq_head; + qsize = nesqp->hwqp.sq_tail; + + /* Check for SQ overflow */ + if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { + return -EINVAL; + } + + wqe = &nesqp->hwqp.sq_vbase[head]; + /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */ + u64temp = (u64)ibmw_bind->wr_id; + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX] = cpu_to_le32((u32)u64temp); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX] = cpu_to_le32((u32)((u64temp)>>32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)nesqp)>>32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX] = (u32)((u64)nesqp); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX] |= head; + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX] = + cpu_to_le32(wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX]); + wqe_misc = NES_IWARP_SQ_OP_BIND; + + wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; + + if (ibmw_bind->send_flags & IB_SEND_SIGNALED) + wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL; + + if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) { + wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE; + } + if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) { + wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ; + } + + wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc); + wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_MR_IDX] = cpu_to_le32(ibmw_bind->mr->lkey); + wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_MW_IDX] = cpu_to_le32(ibmw->rkey); + wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX] = + cpu_to_le32(ibmw_bind->length); + wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0; + u64temp = (u64)ibmw_bind->addr; + wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX] = cpu_to_le32((u32)u64temp); + wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_VA_FBO_HIGH_IDX] = cpu_to_le32((u32)(u64temp>>32)); + + head++; + if (head >= qsize) + head = 0; + + nesqp->hwqp.sq_head = head; + barrier(); + + nes_write32(nesdev->regs + NES_WQE_ALLOC, + (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); + + spin_unlock_irqrestore(&nesqp->lock, flags); + + return 0; +} + + +/** + * nes_alloc_fmr + */ +static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd, + int ibmr_access_flags, + struct ib_fmr_attr *ibfmr_attr) +{ + unsigned long flags; + struct nes_pd *nespd = to_nespd(ibpd); + struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_fmr *nesfmr; + struct nes_cqp_request *cqp_request; + struct nes_hw_cqp_wqe *cqp_wqe; + int ret; + u32 stag; + u32 stag_index = 0; + u32 next_stag_index = 0; + u32 driver_key = 0; + u8 stag_key = 0; + int i=0; + struct nes_vpbl vpbl; + + get_random_bytes(&next_stag_index, sizeof(next_stag_index)); + stag_key = (u8)next_stag_index; + + driver_key = 0; + + next_stag_index >>= 8; + next_stag_index %= nesadapter->max_mr; + + ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, + nesadapter->max_mr, &stag_index, &next_stag_index); + if (ret) { + goto failed_resource_alloc; + } + + nesfmr = kmalloc(sizeof(*nesfmr), GFP_KERNEL); + if (!nesfmr) { + ret = -ENOMEM; + goto failed_fmr_alloc; + } + + nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR; + if (ibfmr_attr->max_pages == 1) { + /* use zero length PBL */ + nesfmr->nesmr.pbl_4k = 0; + nesfmr->nesmr.pbls_used = 0; + } else if (ibfmr_attr->max_pages <= 32) { + /* use PBL 256 */ + nesfmr->nesmr.pbl_4k = 0; + nesfmr->nesmr.pbls_used = 1; + } else if (ibfmr_attr->max_pages <= 512) { + /* use 4K PBLs */ + nesfmr->nesmr.pbl_4k = 1; + nesfmr->nesmr.pbls_used = 1; + } else { + /* use two level 4K PBLs */ + /* add support for two level 256B PBLs */ + nesfmr->nesmr.pbl_4k = 1; + nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages>>9) + + ((ibfmr_attr->max_pages&511)?1:0); + } + /* Register the region with the adapter */ + spin_lock_irqsave(&nesdev->cqp.lock, flags); + + /* track PBL resources */ + if (nesfmr->nesmr.pbls_used != 0) { + if (nesfmr->nesmr.pbl_4k) { + if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + ret = -ENOMEM; + goto failed_vpbl_alloc; + } else { + nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used; + } + } else { + if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + ret = -ENOMEM; + goto failed_vpbl_alloc; + } else { + nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used; + } + } + } + + /* one level pbl */ + if (nesfmr->nesmr.pbls_used == 0) { + nesfmr->root_vpbl.pbl_vbase = NULL; + nes_debug(NES_DBG_MR, "zero level pbl \n"); + } else if (nesfmr->nesmr.pbls_used == 1) { + /* can change it to kmalloc & dma_map_single */ + nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, + &nesfmr->root_vpbl.pbl_pbase); + if (!nesfmr->root_vpbl.pbl_vbase) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + ret = -ENOMEM; + goto failed_vpbl_alloc; + } + nesfmr->leaf_pbl_cnt = 0; + nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n", + nesfmr->root_vpbl.pbl_vbase); + } + /* two level pbl */ + else { + nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192, + &nesfmr->root_vpbl.pbl_pbase); + if (!nesfmr->root_vpbl.pbl_vbase) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + ret = -ENOMEM; + goto failed_vpbl_alloc; + } + + nesfmr->root_vpbl.leaf_vpbl = kmalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL); + if (!nesfmr->root_vpbl.leaf_vpbl) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + ret = -ENOMEM; + goto failed_leaf_vpbl_alloc; + } + + nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1; + nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p" + " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n", + nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl); + + for (i=0; i<nesfmr->leaf_pbl_cnt; i++) + nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL; + + for (i=0; i<nesfmr->leaf_pbl_cnt; i++) { + vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, + &vpbl.pbl_pbase); + + if (!vpbl.pbl_vbase) { + ret = -ENOMEM; + goto failed_leaf_vpbl_pages_alloc; + } + + nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase); + nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32))); + nesfmr->root_vpbl.leaf_vpbl[i] = vpbl; + + nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n", + nesfmr->root_vpbl.pbl_vbase[i].pa_low, + nesfmr->root_vpbl.pbl_vbase[i].pa_high, + &nesfmr->root_vpbl.leaf_vpbl[i]); + } + } + nesfmr->ib_qp = NULL; + nesfmr->access_rights =0; + + stag = stag_index << 8; + stag |= driver_key; + stag += (u32)stag_key; + + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); + ret = -ENOMEM; + goto failed_leaf_vpbl_pages_alloc; + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n", + stag, stag_index); + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_ALLOCATE_STAG | + NES_CQP_STAG_VA_TO | + NES_CQP_STAG_MR); + + if (nesfmr->nesmr.pbl_4k == 1) + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE); + + if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= + cpu_to_le32(NES_CQP_STAG_RIGHTS_REMOTE_WRITE | + NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN); + nesfmr->access_rights |= + NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE | + NES_CQP_STAG_REM_ACC_EN; + } + + if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= + cpu_to_le32( NES_CQP_STAG_RIGHTS_REMOTE_READ | + NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN); + nesfmr->access_rights |= + NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ | + NES_CQP_STAG_REM_ACC_EN; + } + + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = + cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = + cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = + cpu_to_le32(nespd->pd_id & 0x00007fff); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_STAG_IDX] = cpu_to_le32(stag); + + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = + cpu_to_le32((nesfmr->nesmr.pbls_used>1) ? + (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0; + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_NOT_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X.\n", + stag, ret, cqp_request->major_code, cqp_request->minor_code); + + if ((!ret) || (cqp_request->major_code)) { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + ret = (!ret) ? -ETIME : -EIO; + goto failed_leaf_vpbl_pages_alloc; + } else { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + } + + nesfmr->nesmr.ibfmr.lkey = stag; + nesfmr->nesmr.ibfmr.rkey = stag; + nesfmr->attr = *ibfmr_attr; + + return &nesfmr->nesmr.ibfmr; + failed_leaf_vpbl_pages_alloc: + /* unroll all allocated pages */ + for (i=0; i<nesfmr->leaf_pbl_cnt; i++) { + if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) { + pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase, + nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase); + } + } + if (nesfmr->root_vpbl.leaf_vpbl) + kfree( nesfmr->root_vpbl.leaf_vpbl ); + failed_leaf_vpbl_alloc: + if (nesfmr->leaf_pbl_cnt == 0) { + if (nesfmr->root_vpbl.pbl_vbase) + pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase, + nesfmr->root_vpbl.pbl_pbase); + } else + pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase, + nesfmr->root_vpbl.pbl_pbase); + failed_vpbl_alloc: + kfree(nesfmr); + failed_fmr_alloc: + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + failed_resource_alloc: + return ERR_PTR(ret); +} + + +/** + * nes_dealloc_fmr + */ +static int nes_dealloc_fmr(struct ib_fmr *ibfmr) +{ + struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr); + struct nes_fmr *nesfmr = to_nesfmr(nesmr); + struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_mr temp_nesmr = *nesmr; + int i = 0; + + temp_nesmr.ibmw.device = ibfmr->device; + temp_nesmr.ibmw.pd = ibfmr->pd; + temp_nesmr.ibmw.rkey = ibfmr->rkey; + temp_nesmr.ibmw.uobject = NULL; + + /* free the resources */ + if (nesfmr->leaf_pbl_cnt == 0) { + /* single PBL case */ + if (nesfmr->root_vpbl.pbl_vbase) + pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase, + nesfmr->root_vpbl.pbl_pbase); + } else { + for (i=0; i<nesfmr->leaf_pbl_cnt; i++) { + pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase, + nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase); + } + kfree(nesfmr->root_vpbl.leaf_vpbl); + pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase, + nesfmr->root_vpbl.pbl_pbase); + } + + return nes_dealloc_mw(&temp_nesmr.ibmw); +} + + +/** + * nes_map_phys_fmr + */ +static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, + int list_len, u64 iova) +{ + return 0; +} + + +/** + * nes_unmap_frm + */ +static int nes_unmap_fmr(struct list_head *ibfmr_list) +{ + return 0; +} + + + +/** + * nes_query_device + */ +static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props) +{ + struct nes_vnic *nesvnic = to_nesvnic(ibdev); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_ib_device *nesibdev = nesvnic->nesibdev; + + memset(props, 0, sizeof(*props)); + memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6); + + props->fw_ver = nesdev->nesadapter->fw_ver; + props->device_cap_flags = nesdev->nesadapter->device_cap_flags; + props->vendor_id = nesdev->nesadapter->vendor_id; + props->vendor_part_id = nesdev->nesadapter->vendor_part_id; + props->hw_ver = nesdev->nesadapter->hw_rev; + props->max_mr_size = 0x80000000; + props->max_qp = nesibdev->max_qp; + props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2; + props->max_sge = nesdev->nesadapter->max_sge; + props->max_cq = nesibdev->max_cq; + props->max_cqe = nesdev->nesadapter->max_cqe - 1; + props->max_mr = nesibdev->max_mr; + props->max_mw = nesibdev->max_mr; + props->max_pd = nesibdev->max_pd; + props->max_sge_rd = 1; + switch (nesdev->nesadapter->max_irrq_wr) { + case 0: + props->max_qp_rd_atom = 1; + break; + case 1: + props->max_qp_rd_atom = 4; + break; + case 2: + props->max_qp_rd_atom = 16; + break; + case 3: + props->max_qp_rd_atom = 32; + break; + default: + props->max_qp_rd_atom = 0; + } + props->max_qp_init_rd_atom = props->max_qp_wr; + props->atomic_cap = IB_ATOMIC_NONE; + props->max_map_per_fmr = 1; + + return 0; +} + + +/** + * nes_query_port + */ +static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) +{ + memset(props, 0, sizeof(*props)); + + props->max_mtu = IB_MTU_2048; + props->active_mtu = IB_MTU_2048; + props->lid = 1; + props->lmc = 0; + props->sm_lid = 0; + props->sm_sl = 0; + props->state = IB_PORT_ACTIVE; + props->phys_state = 0; + props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | + IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; + props->gid_tbl_len = 1; + props->pkey_tbl_len = 1; + props->qkey_viol_cntr = 0; + props->active_width = IB_WIDTH_4X; + props->active_speed = 1; + props->max_msg_sz = 0x80000000; + + return 0; +} + + +/** + * nes_modify_port + */ +static int nes_modify_port(struct ib_device *ibdev, u8 port, + int port_modify_mask, struct ib_port_modify *props) +{ + return 0; +} + + +/** + * nes_query_pkey + */ +static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 * pkey) +{ + *pkey = 0; + return 0; +} + + +/** + * nes_query_gid + */ +static int nes_query_gid(struct ib_device *ibdev, u8 port, + int index, union ib_gid *gid) +{ + struct nes_vnic *nesvnic = to_nesvnic(ibdev); + + memset(&(gid->raw[0]), 0, sizeof(gid->raw)); + memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6); + + return 0; +} + + +/** + * nes_alloc_ucontext - Allocate the user context data structure. This keeps track + * of all objects associated with a particular user-mode client. + */ +static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev, + struct ib_udata *udata) +{ + struct nes_vnic *nesvnic = to_nesvnic(ibdev); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_alloc_ucontext_resp uresp; + struct nes_ucontext *nes_ucontext; + struct nes_ib_device *nesibdev = nesvnic->nesibdev; + + memset(&uresp, 0, sizeof uresp); + + uresp.max_qps = nesibdev->max_qp; + uresp.max_pds = nesibdev->max_pd; + uresp.wq_size = nesdev->nesadapter->max_qp_wr*2; + + nes_ucontext = kmalloc(sizeof *nes_ucontext, GFP_KERNEL); + if (!nes_ucontext) + return ERR_PTR(-ENOMEM); + + memset(nes_ucontext, 0, sizeof(struct nes_ucontext)); + + nes_ucontext->nesdev = nesdev; + nes_ucontext->mmap_wq_offset = ((uresp.max_pds * 4096) + PAGE_SIZE-1) / PAGE_SIZE; + nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset + + ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) / + PAGE_SIZE; + + if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { + kfree(nes_ucontext); + return ERR_PTR(-EFAULT); + } + + INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list); + return &nes_ucontext->ibucontext; +} + + +/** + * nes_dealloc_ucontext + */ +static int nes_dealloc_ucontext(struct ib_ucontext *context) +{ + /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */ + /* struct nes_device *nesdev = nesvnic->nesdev; */ + struct nes_ucontext *nes_ucontext = to_nesucontext(context); + + kfree(nes_ucontext); + return 0; +} + + +/** + * nes_mmap + */ +static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) +{ + unsigned long index; + struct nes_vnic *nesvnic = to_nesvnic(context->device); + struct nes_device *nesdev = nesvnic->nesdev; + /* struct nes_adapter *nesadapter = nesdev->nesadapter; */ + struct nes_ucontext *nes_ucontext; + struct nes_qp *nesqp; + + nes_ucontext = to_nesucontext(context); + + + if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) { + index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE; + index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) + + PAGE_SIZE-1) & (~(PAGE_SIZE-1)); + if (!test_bit(index, nes_ucontext->allocated_wqs)) { + nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index); + return -EFAULT; + } + nesqp = nes_ucontext->mmap_nesqp[index]; + if (NULL == nesqp) { + nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index); + return -EFAULT; + } + if (remap_pfn_range(vma, vma->vm_start, + virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT, + vma->vm_end - vma->vm_start, + vma->vm_page_prot)) { + nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n"); + return -EAGAIN; + } + vma->vm_private_data = nesqp; + return 0; + } else { + index = vma->vm_pgoff; + if (!test_bit(index, nes_ucontext->allocated_doorbells)) + return -EFAULT; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + if (io_remap_pfn_range(vma, vma->vm_start, + (nesdev->doorbell_start + + ((nes_ucontext->mmap_db_index[index]-nesdev->base_doorbell_index) * 4096)) + >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot)) + return -EAGAIN; + vma->vm_private_data = nes_ucontext; + return 0; + } + + return -ENOSYS; +} + + +/** + * nes_alloc_pd + */ +static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev, + struct ib_ucontext *context, struct ib_udata *udata) +{ + struct nes_pd *nespd; + struct nes_vnic *nesvnic = to_nesvnic(ibdev); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_ucontext *nesucontext; + struct nes_alloc_pd_resp uresp; + u32 pd_num = 0; + int err; + + nes_debug(NES_DBG_PD, "netdev refcnt=%u\n", + atomic_read(&nesvnic->netdev->refcnt)); + + err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds, + nesadapter->max_pd, &pd_num, &nesadapter->next_pd); + if (err) { + return ERR_PTR(err); + } + + nespd = kmalloc(sizeof (struct nes_pd), GFP_KERNEL); + if (!nespd) { + nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); + return ERR_PTR(-ENOMEM); + } + memset(nespd, 0, sizeof(struct nes_pd)); + nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n", + nespd, nesvnic->nesibdev->ibdev.name); + + nespd->pd_id = pd_num + nesadapter->base_pd; + + if (context) { + nesucontext = to_nesucontext(context); + nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells, + NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db); + nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n", + nespd->mmap_db_index, nespd->pd_id); + if (nespd->mmap_db_index > NES_MAX_USER_DB_REGIONS) { + nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n"); + nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); + kfree(nespd); + return ERR_PTR(-ENOMEM); + } + + uresp.pd_id = nespd->pd_id; + uresp.mmap_db_index = nespd->mmap_db_index; + if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) { + nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); + kfree(nespd); + return ERR_PTR(-EFAULT); + } + + set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells); + nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id; + nesucontext->first_free_db = nespd->mmap_db_index + 1; + } + + nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd); + return &nespd->ibpd; +} + + +/** + * nes_dealloc_pd + */ +static int nes_dealloc_pd(struct ib_pd *ibpd) +{ + struct nes_ucontext *nesucontext; + struct nes_pd *nespd = to_nespd(ibpd); + struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + + if ((ibpd->uobject) && (ibpd->uobject->context)) { + nesucontext = to_nesucontext(ibpd->uobject->context); + nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n", + nespd->mmap_db_index); + clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells); + nesucontext->mmap_db_index[nespd->mmap_db_index] = 0; + if (nesucontext->first_free_db > nespd->mmap_db_index) { + nesucontext->first_free_db = nespd->mmap_db_index; + } + } + + nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n", + nespd->pd_id, nespd); + nes_free_resource(nesadapter, nesadapter->allocated_pds, + nespd->pd_id-nesadapter->base_pd); + kfree(nespd); + + return 0; +} + + +/** + * nes_create_ah + */ +static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) +{ + return ERR_PTR(-ENOSYS); +} + + +/** + * nes_destroy_ah + */ +static int nes_destroy_ah(struct ib_ah *ah) +{ + return -ENOSYS; +} + + +/** + * nes_create_qp + */ +static struct ib_qp *nes_create_qp(struct ib_pd *ibpd, + struct ib_qp_init_attr *init_attr, struct ib_udata *udata) +{ + u64 u64temp= 0; + u64 u64nesqp = 0; + struct nes_pd *nespd = to_nespd(ibpd); + struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_qp *nesqp; + struct nes_cq *nescq; + struct nes_ucontext *nes_ucontext; + struct nes_hw_cqp_wqe *cqp_wqe; + struct nes_cqp_request *cqp_request; + struct nes_create_qp_resp uresp; + u32 qp_num = 0; + /* u32 counter = 0; */ + void *mem; + unsigned long flags; + int ret; + int sq_size; + int rq_size; + u8 sq_encoded_size; + u8 rq_encoded_size; + /* int counter; */ + + atomic_inc(&qps_created); + switch (init_attr->qp_type) { + case IB_QPT_RC: + if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { + init_attr->cap.max_inline_data = 0; + } else { + init_attr->cap.max_inline_data = 64; + } + + if (init_attr->cap.max_send_wr < 32) { + sq_size = 32; + sq_encoded_size = 1; + } else if (init_attr->cap.max_send_wr < 128) { + sq_size = 128; + sq_encoded_size = 2; + } else if (init_attr->cap.max_send_wr < 512) { + sq_size = 512; + sq_encoded_size = 3; + } else { + printk(KERN_ERR PFX "%s: SQ size (%u) too large.\n", + __FUNCTION__, init_attr->cap.max_send_wr); + return ERR_PTR(-EINVAL); + } + init_attr->cap.max_send_wr = sq_size - 2; + if (init_attr->cap.max_recv_wr < 32) { + rq_size = 32; + rq_encoded_size = 1; + } else if (init_attr->cap.max_recv_wr < 128) { + rq_size = 128; + rq_encoded_size = 2; + } else if (init_attr->cap.max_recv_wr < 512) { + rq_size = 512; + rq_encoded_size = 3; + } else { + printk(KERN_ERR PFX "%s: RQ size (%u) too large.\n", + __FUNCTION__, init_attr->cap.max_recv_wr); + return ERR_PTR(-EINVAL); + } + init_attr->cap.max_recv_wr = rq_size -1; + nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size); + + ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps, + nesadapter->max_qp, &qp_num, &nesadapter->next_qp); + if (ret) { + return ERR_PTR(ret); + } + + /* Need 512 (actually now 1024) byte alignment on this structure */ + mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL); + if (!mem) { + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + nes_debug(NES_DBG_QP, "Unable to allocate QP\n"); + return ERR_PTR(-ENOMEM); + } + u64nesqp = (u64)mem; /* u64nesqp = (u64)((uint)mem); */ + u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1; + u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1; + u64nesqp &= ~u64temp; + nesqp = (struct nes_qp *)u64nesqp; + /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n", + nesqp, mem, NES_SW_CONTEXT_ALIGN); */ + nesqp->allocated_buffer = mem; + + if (udata) { + if ((ibpd->uobject) && (ibpd->uobject->context)) { + nesqp->user_mode = 1; + nes_ucontext = to_nesucontext(ibpd->uobject->context); + nesqp->mmap_sq_db_index = + find_next_zero_bit(nes_ucontext->allocated_wqs, + NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq); + /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n", + nespd->mmap_db_index); */ + if (nesqp->mmap_sq_db_index > NES_MAX_USER_WQ_REGIONS) { + nes_debug(NES_DBG_QP, + "db index > max user regions, failing create QP\n"); + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + kfree(nesqp->allocated_buffer); + return ERR_PTR(-ENOMEM); + } + set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs); + nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp; + nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1; + } else { + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + kfree(nesqp->allocated_buffer); + return ERR_PTR(-EFAULT); + } + } + + nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) + + (sizeof(struct nes_hw_qp_wqe) * rq_size) + + max((u32)sizeof(struct nes_qp_context), ((u32)256)) + + 256; /* this is Q2 */ + /* Round up to a multiple of a page */ + nesqp->qp_mem_size += PAGE_SIZE - 1; + nesqp->qp_mem_size &= ~(PAGE_SIZE - 1); + + mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size, + &nesqp->hwqp.sq_pbase); + if (!mem) { + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + nes_debug(NES_DBG_QP, + "Unable to allocate memory for host descriptor rings\n"); + kfree(nesqp->allocated_buffer); + return ERR_PTR(-ENOMEM); + } + nes_debug(NES_DBG_QP, "PCI consistent memory for " + "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n", + mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size); + + memset(mem, 0, nesqp->qp_mem_size); + + nesqp->hwqp.sq_vbase = mem; + nesqp->hwqp.sq_size = sq_size; + nesqp->hwqp.sq_encoded_size = sq_encoded_size; + nesqp->hwqp.sq_head = 1; + mem += sizeof(struct nes_hw_qp_wqe) * sq_size; + + nesqp->hwqp.rq_vbase = mem; + nesqp->hwqp.rq_size = rq_size; + nesqp->hwqp.rq_encoded_size = rq_encoded_size; + nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase + + sizeof(struct nes_hw_qp_wqe) * sq_size; + mem += sizeof(struct nes_hw_qp_wqe)*rq_size; + + nesqp->hwqp.q2_vbase = mem; + nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase + + sizeof(struct nes_hw_qp_wqe) * rq_size; + mem += 256; + memset(nesqp->hwqp.q2_vbase, 0, 256); + + nesqp->nesqp_context = mem; + nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256; + memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context)); + + /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n", + (void *)nesqp->nesqp_context_pbase); + */ + nesqp->hwqp.qp_id = qp_num; + nesqp->ibqp.qp_num = nesqp->hwqp.qp_id; + nesqp->nespd = nespd; + + nescq = to_nescq(init_attr->send_cq); + nesqp->nesscq = nescq; + nescq = to_nescq(init_attr->recv_cq); + nesqp->nesrcq = nescq; + + nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << + NES_QPCONTEXT_MISC_PCI_FCN_SHIFT); + nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size << + NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT); + nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size << + NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT); + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN); + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN); + nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number + + ((u32)nesqp->nesrcq->hw_cq.cq_number << 16)); + u64temp = (u64)nesqp->hwqp.sq_pbase; + nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp); + nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); + u64temp = (u64)nesqp->hwqp.rq_pbase; + nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp); + nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n", + nesvnic->next_qp_nic_index, + nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */ + nesqp->nesqp_context->misc2 |= cpu_to_le32( + (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] << + NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT); + nesvnic->next_qp_nic_index++; + if ((nesvnic->next_qp_nic_index > 3) || + (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) { + nesvnic->next_qp_nic_index = 0; + } + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + + nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16); + u64temp = (u64)nesqp->hwqp.q2_pbase; + nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp); + nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp>>32)); + nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((u64)(nesqp))); + nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(((u64)(nesqp))>>32)); + nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM | + ((((u32)nesadapter->max_irrq_wr) << + NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK)); + if (disable_mpa_crc) { + nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n"); + nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC); + } + + + /* Create the QP */ + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n"); + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, + nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); + kfree(nesqp->allocated_buffer); + return ERR_PTR(-ENOMEM); + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | + NES_CQP_QP_IWARP_STATE_IDLE); + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_QP_CQS_VALID); + cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesqp->hwqp.qp_id); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = + cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = + cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + u64temp = (u64)nesqp->nesqp_context_pbase; + cqp_wqe->wqe_words[NES_CQP_QP_WQE_CONTEXT_LOW_IDX] = cpu_to_le32((u32)u64temp); + cqp_wqe->wqe_words[NES_CQP_QP_WQE_CONTEXT_HIGH_IDX] = + cpu_to_le32((u32)(u64temp >> 32)); + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_NOT_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n", + nesqp->hwqp.qp_id); + ret = wait_event_timeout(cqp_request->waitq, + (0 != cqp_request->request_done), NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u," + " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X.\n", + nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail, + cqp_request->major_code, cqp_request->minor_code); + if ((!ret) || (cqp_request->major_code)) { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, + nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); + kfree(nesqp->allocated_buffer); + if (!ret) { + return ERR_PTR(-ETIME); + } else { + return ERR_PTR(-EIO); + } + } else { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + } + + if (ibpd->uobject) { + uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index; + uresp.actual_sq_size = sq_size; + uresp.actual_rq_size = rq_size; + uresp.qp_id = nesqp->hwqp.qp_id; + uresp.nes_drv_opt = nes_drv_opt; + if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { + pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, + nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); + kfree(nesqp->allocated_buffer); + return ERR_PTR(-EFAULT); + } + } + + nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n", + nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp)); + spin_lock_init(&nesqp->lock); + init_waitqueue_head(&nesqp->state_waitq); + init_waitqueue_head(&nesqp->kick_waitq); + nes_add_ref(&nesqp->ibqp); + break; + default: + nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type); + return ERR_PTR(-EINVAL); + break; + } + + /* update the QP table */ + nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp; + nes_debug(NES_DBG_QP, "netdev refcnt=%u\n", + atomic_read(&nesvnic->netdev->refcnt)); + + return &nesqp->ibqp; +} + + +/** + * nes_destroy_qp + */ +static int nes_destroy_qp(struct ib_qp *ibqp) +{ + struct nes_qp *nesqp = to_nesqp(ibqp); + /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */ + struct nes_ucontext *nes_ucontext; + struct ib_qp_attr attr; + struct iw_cm_id *cm_id; + struct iw_cm_event cm_event; + int ret; + + atomic_inc(&sw_qps_destroyed); + nesqp->destroyed = 1; + + /* Blow away the connection if it exists. */ + if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) { + /* if (nesqp->ibqp_state == IB_QPS_RTS) { */ + attr.qp_state = IB_QPS_ERR; + nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); + } + + if (((nesqp->ibqp_state == IB_QPS_INIT) || + (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) { + cm_id = nesqp->cm_id; + cm_event.event = IW_CM_EVENT_CONNECT_REPLY; + cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT; + cm_event.local_addr = cm_id->local_addr; + cm_event.remote_addr = cm_id->remote_addr; + cm_event.private_data = NULL; + cm_event.private_data_len = 0; + + nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for " + "QP%u. cm_id = %p, refcount = %u. \n", + nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount)); + + cm_id->rem_ref(cm_id); + ret = cm_id->event_handler(cm_id, &cm_event); + if (ret) + nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret); + } + + + if (nesqp->user_mode) { + if ((ibqp->uobject)&&(ibqp->uobject->context)) { + nes_ucontext = to_nesucontext(ibqp->uobject->context); + clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs); + nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL; + if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) { + nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index; + } + } + } + + nes_rem_ref(&nesqp->ibqp); + return 0; +} + + +/** + * nes_create_cq + */ +static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries, +#ifndef OFED_1_2 + int comp_vector, +#endif + struct ib_ucontext *context, struct ib_udata *udata) +{ + u64 u64temp; + struct nes_vnic *nesvnic = to_nesvnic(ibdev); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_cq *nescq; + struct nes_ucontext *nes_ucontext = NULL; + struct nes_cqp_request *cqp_request; + void *mem = NULL; + struct nes_hw_cqp_wqe *cqp_wqe; + struct nes_pbl *nespbl = NULL; + struct nes_create_cq_req req; + struct nes_create_cq_resp resp; + u32 cq_num = 0; + u32 pbl_entries = 1; + int err; + unsigned long flags; + int ret; + + err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs, + nesadapter->max_cq, &cq_num, &nesadapter->next_cq); + if (err) { + return ERR_PTR(err); + } + + nescq = kmalloc(sizeof(struct nes_cq), GFP_KERNEL); + if (!nescq) { + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n"); + return ERR_PTR(-ENOMEM); + } + memset(nescq, 0, sizeof(struct nes_cq)); + + nescq->hw_cq.cq_size = max(entries + 1, 5); + nescq->hw_cq.cq_number = cq_num; + nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1; + + if (context) { + nes_ucontext = to_nesucontext(context); + if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) { + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-EFAULT); + } + nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n", + (unsigned long)req.user_cq_buffer, entries); + list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) { + if (nespbl->user_base == (unsigned long )req.user_cq_buffer) { + list_del(&nespbl->list); + err = 0; + nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n", + nespbl); + break; + } + } + if (err) { + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(err); + } + pbl_entries = nespbl->pbl_size >> 3; + nescq->cq_mem_size = 0; + } else { + nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe); + nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n", + entries, nescq->cq_mem_size, nescq->hw_cq.cq_number); + + /* allocate the physical buffer space */ + mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size, + &nescq->hw_cq.cq_pbase); + if (!mem) { + printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n"); + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-ENOMEM); + } + + memset(mem, 0, nescq->cq_mem_size); + nescq->hw_cq.cq_vbase = mem; + nescq->hw_cq.cq_head = 0; + nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n", + nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase, + (u32)nescq->hw_cq.cq_pbase); + } + + nescq->hw_cq.ce_handler = nes_iwarp_ce_handler; + spin_lock_init(&nescq->lock); + + /* send CreateCQ request to CQP */ + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); + if (!context) + pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, + nescq->hw_cq.cq_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-ENOMEM); + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID | + NES_CQP_CQ_CHK_OVERFLOW | + NES_CQP_CQ_CEQE_MASK |((u32)nescq->hw_cq.cq_size << 16)); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + if (1 != pbl_entries) { + if (pbl_entries > 32) { + /* use 4k pbl */ + nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries); + if (0 == nesadapter->free_4kpbl) { + if (cqp_request->dynamic) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + if (!context) + pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, + nescq->hw_cq.cq_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-ENOMEM); + } else { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32( + (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK)); + nescq->virtual_cq = 2; + nesadapter->free_4kpbl--; + } + } else { + /* use 256 byte pbl */ + nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries); + if (0 == nesadapter->free_256pbl) { + if (cqp_request->dynamic) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + if (!context) + pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, + nescq->hw_cq.cq_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-ENOMEM); + } else { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_CQ_VIRT); + nescq->virtual_cq = 1; + nesadapter->free_256pbl--; + } + } + } + + cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = + cpu_to_le32(nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + if (context) { + if (1 != pbl_entries) + u64temp = (u64)nespbl->pbl_pbase; + else + u64temp = le64_to_cpu(nespbl->pbl_vbase[0]); + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = + cpu_to_le32(nes_ucontext->mmap_db_index[0]); + } else { + u64temp = (u64)nescq->hw_cq.cq_pbase; + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0; + } + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_PBL_LOW_IDX] = cpu_to_le32((u32)u64temp); + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_PBL_HIGH_IDX] = cpu_to_le32((u32)(u64temp >> 32)); + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0; + u64temp = (u64)&nescq->hw_cq; + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] = cpu_to_le32((u32)(u64temp>>1)); + cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = cpu_to_le32(((u32)((u64temp)>>33))&0x7FFFFFFF); + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + + /* Wait for CQP */ + nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n", + nescq->hw_cq.cq_number); + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT * 2); + nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n", + nescq->hw_cq.cq_number, ret); + if ((!ret) || (cqp_request->major_code)) { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + nes_debug(NES_DBG_CQ, "iWARP CQ%u create timeout expired, major code = 0x%04X," + " minor code = 0x%04X\n", + nescq->hw_cq.cq_number, cqp_request->major_code, cqp_request->minor_code); + if (!context) + pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, + nescq->hw_cq.cq_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-EIO); + } else { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + } + + if (context) { + /* free the nespbl */ + pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, + nespbl->pbl_pbase); + kfree(nespbl); + resp.cq_id = nescq->hw_cq.cq_number; + resp.cq_size = nescq->hw_cq.cq_size; + resp.mmap_db_index = 0; + if (ib_copy_to_udata(udata, &resp, sizeof resp)) { + nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); + kfree(nescq); + return ERR_PTR(-EFAULT); + } + } + + return &nescq->ibcq; +} + + +/** + * nes_destroy_cq + */ +static int nes_destroy_cq(struct ib_cq *ib_cq) +{ + struct nes_cq *nescq; + struct nes_device *nesdev; + struct nes_vnic *nesvnic; + struct nes_adapter *nesadapter; + struct nes_hw_cqp_wqe *cqp_wqe; + struct nes_cqp_request *cqp_request; + unsigned long flags; + int ret; + + if (ib_cq == NULL) + return 0; + + nescq = to_nescq(ib_cq); + nesvnic = to_nesvnic(ib_cq->device); + nesdev = nesvnic->nesdev; + nesadapter = nesdev->nesadapter; + + nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number); + + /* Send DestroyCQ request to CQP */ + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); + return -ENOMEM; + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16)); + + spin_lock_irqsave(&nesdev->cqp.lock, flags); + if (nescq->virtual_cq == 1) { + nesadapter->free_256pbl++; + if (nesadapter->free_256pbl > nesadapter->max_256pbl) { + printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n", + __FUNCTION__, nesadapter->free_256pbl, nesadapter->max_256pbl); + } + } else if (nescq->virtual_cq == 2) { + nesadapter->free_4kpbl++; + if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) { + printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n", + __FUNCTION__, nesadapter->free_4kpbl, nesadapter->max_4kpbl); + } + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_CQ_4KB_CHUNK); + } + + cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32( + nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + + atomic_set(&cqp_request->refcount, 2); + nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + + /* Wait for CQP */ + nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n", + nescq->hw_cq.cq_number); + /* cqp_head = (cqp_head+1)&(nesdev->cqp.sq_size-1); */ + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X.\n", + nescq->hw_cq.cq_number, ret, cqp_request->major_code, + cqp_request->minor_code); + if ((!ret) || (cqp_request->major_code)) { + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + if (!ret) { + nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n", + nescq->hw_cq.cq_number); + ret = -ETIME; + } else { + nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n", + nescq->hw_cq.cq_number); + ret = -EIO; + } + } else { + ret = 0; + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + } + + if (nescq->cq_mem_size) + pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, + (void *)nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase); + kfree(nescq); + + return ret; +} + + +/** + * nes_reg_mr + */ +static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd, + u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl, + dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count, + int acc, u64 *iova_start) +{ + struct nes_hw_cqp_wqe *cqp_wqe; + struct nes_cqp_request *cqp_request; + unsigned long flags; + int ret; + struct nes_adapter *nesadapter = nesdev->nesadapter; + /* int count; */ + u16 major_code; + + /* Register the region with the adapter */ + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); + return -ENOMEM; + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + spin_lock_irqsave(&nesdev->cqp.lock, flags); + /* track PBL resources */ + if (pbl_count != 0) { + if (pbl_count > 1) { + /* Two level PBL */ + if ((pbl_count+1) > nesadapter->free_4kpbl) { + nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n"); + if (cqp_request->dynamic) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + return -ENOMEM; + } else { + nesadapter->free_4kpbl -= pbl_count+1; + } + } else if (residual_page_count > 32) { + if (pbl_count > nesadapter->free_4kpbl) { + nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n"); + if (cqp_request->dynamic) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + return -ENOMEM; + } else { + nesadapter->free_4kpbl -= pbl_count; + } + } else { + if (pbl_count > nesadapter->free_256pbl) { + nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n"); + if (cqp_request->dynamic) { + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + return -ENOMEM; + } else { + nesadapter->free_256pbl -= pbl_count; + } + } + } + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ); + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32( + NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR); + if (acc & IB_ACCESS_LOCAL_WRITE) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_RIGHTS_LOCAL_WRITE); + } + if (acc & IB_ACCESS_REMOTE_WRITE) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32( + NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN); + } + if (acc & IB_ACCESS_REMOTE_READ) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32( + NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN); + } + if (acc & IB_ACCESS_MW_BIND) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32( + NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN); + } + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_VA_LOW_IDX] = cpu_to_le32((u32)*iova_start); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_VA_HIGH_IDX] = + cpu_to_le32((u32)((((u64)*iova_start) >> 32))); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX] = cpu_to_le32((u32)region_length); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = + cpu_to_le32((u32)(region_length >> 8) & 0xff000000); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |= + cpu_to_le32(nespd->pd_id & 0x00007fff); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_STAG_IDX] = cpu_to_le32(stag); + + if (pbl_count == 0) { + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX] = + cpu_to_le32((u32)single_buffer); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX] = + cpu_to_le32((u32)((((u64)single_buffer) >> 32))); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0; + } else { + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX] = + cpu_to_le32((u32)root_vpbl->pbl_pbase); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX] = + cpu_to_le32((u32)((((u64)root_vpbl->pbl_pbase) >> 32))); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = cpu_to_le32(pbl_count); + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = + cpu_to_le32(((pbl_count-1) * 4096) + (residual_page_count*8)); + if ((pbl_count > 1) || (residual_page_count > 32)) { + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32( NES_CQP_STAG_PBL_BLK_SIZE ); + } + } + barrier(); + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_NOT_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X.\n", + stag, ret, cqp_request->major_code, cqp_request->minor_code); + major_code = cqp_request->major_code; + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + if (!ret) + return -ETIME; + else if (major_code) + return -EIO; + else + return 0; + + return 0; +} + + +/** + * nes_reg_phys_mr + */ +static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, + struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, + u64 * iova_start) { + u64 region_length; + struct nes_pd *nespd = to_nespd(ib_pd); + struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_mr *nesmr; + struct ib_mr *ibmr; + struct nes_vpbl vpbl; + struct nes_root_vpbl root_vpbl; + u32 stag; + u32 i; + u32 stag_index = 0; + u32 next_stag_index = 0; + u32 driver_key = 0; + u32 root_pbl_index = 0; + u32 cur_pbl_index = 0; + int err = 0, pbl_depth = 0; + int ret = 0; + u16 pbl_count = 0; + u8 single_page = 1; + u8 stag_key = 0; + + pbl_depth = 0; + region_length = 0; + vpbl.pbl_vbase = NULL; + root_vpbl.pbl_vbase = NULL; + root_vpbl.pbl_pbase = 0; + + get_random_bytes(&next_stag_index, sizeof(next_stag_index)); + stag_key = (u8)next_stag_index; + + driver_key = 0; + + next_stag_index >>= 8; + next_stag_index %= nesadapter->max_mr; + if (num_phys_buf > (1024*512)) { + return ERR_PTR(-E2BIG); + } + + err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr, + &stag_index, &next_stag_index); + if (err) { + return ERR_PTR(err); + } + + nesmr = kmalloc(sizeof(*nesmr), GFP_KERNEL); + if (!nesmr) { + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + return ERR_PTR(-ENOMEM); + } + + for (i = 0; i < num_phys_buf; i++) { + + if ((i & 0x01FF) == 0) { + if (1 == root_pbl_index) { + /* Allocate the root PBL */ + root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192, + &root_vpbl.pbl_pbase); + nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n", + root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase); + if (!root_vpbl.pbl_vbase) { + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, + vpbl.pbl_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + kfree(nesmr); + return ERR_PTR(-ENOMEM); + } + root_vpbl.leaf_vpbl = kmalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL); + if (!root_vpbl.leaf_vpbl) { + pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, + root_vpbl.pbl_pbase); + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, + vpbl.pbl_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + kfree(nesmr); + return ERR_PTR(-ENOMEM); + } + root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase); + root_vpbl.pbl_vbase[0].pa_high = + cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); + root_vpbl.leaf_vpbl[0] = vpbl; + } + /* Allocate a 4K buffer for the PBL */ + vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, + &vpbl.pbl_pbase); + nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n", + vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase); + if (!vpbl.pbl_vbase) { + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + ibmr = ERR_PTR(-ENOMEM); + kfree(nesmr); + goto reg_phys_err; + } + /* Fill in the root table */ + if (1 <= root_pbl_index) { + root_vpbl.pbl_vbase[root_pbl_index].pa_low = + cpu_to_le32((u32)vpbl.pbl_pbase); + root_vpbl.pbl_vbase[root_pbl_index].pa_high = + cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); + root_vpbl.leaf_vpbl[root_pbl_index] = vpbl; + } + root_pbl_index++; + cur_pbl_index = 0; + } + if (buffer_list[i].addr & ~PAGE_MASK) { + /* TODO: Unwind allocated buffers */ + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n", + (unsigned int) buffer_list[i].addr); + ibmr = ERR_PTR(-EINVAL); + kfree(nesmr); + goto reg_phys_err; + } + + if (!buffer_list[i].size) { + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + nes_debug(NES_DBG_MR, "Invalid Buffer Size\n"); + ibmr = ERR_PTR(-EINVAL); + kfree(nesmr); + goto reg_phys_err; + } + + region_length += buffer_list[i].size; + if ((i != 0) && (single_page)) { + if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr) + single_page = 0; + } + vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr); + vpbl.pbl_vbase[cur_pbl_index++].pa_high = + cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32))); + } + + stag = stag_index << 8; + stag |= driver_key; + stag += (u32)stag_key; + + nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX," + " length = 0x%016lX, index = 0x%08X\n", + stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index); + + region_length -= (*iova_start)&PAGE_MASK; + + /* Make the leaf PBL the root if only one PBL */ + if (root_pbl_index == 1) { + root_vpbl.pbl_pbase = vpbl.pbl_pbase; + } + + if (single_page) { + pbl_count = 0; + } else { + pbl_count = root_pbl_index; + } + ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl, + buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start); + + if (ret == 0) { + nesmr->ibmr.rkey = stag; + nesmr->ibmr.lkey = stag; + nesmr->mode = IWNES_MEMREG_TYPE_MEM; + ibmr = &nesmr->ibmr; + nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0; + nesmr->pbls_used = pbl_count; + if (pbl_count > 1) { + nesmr->pbls_used++; + } + } else { + kfree(nesmr); + ibmr = ERR_PTR(-ENOMEM); + } + + reg_phys_err: + /* free the resources */ + if (root_pbl_index == 1) { + /* single PBL case */ + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase); + } else { + for (i=0; i<root_pbl_index; i++) { + pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase, + root_vpbl.leaf_vpbl[i].pbl_pbase); + } + kfree(root_vpbl.leaf_vpbl); + pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, + root_vpbl.pbl_pbase); + } + + return ibmr; +} + + +/** + * nes_get_dma_mr + */ +static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc) { + struct ib_phys_buf bl; + u64 kva = 0; + + nes_debug(NES_DBG_MR, "\n"); + + bl.size = (u64)0xffffffffffULL; + bl.addr = 0; + return nes_reg_phys_mr(pd, &bl, 1, acc, &kva); +} + + +/** + * nes_reg_user_mr + */ +#ifdef OFED_1_2 +static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, struct ib_umem *region, + int acc, struct ib_udata *udata) +#else +static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, + u64 virt, int acc, struct ib_udata *udata) +#endif + { + u64 iova_start; + u64 *pbl; + u64 region_length; + dma_addr_t last_dma_addr = 0; + dma_addr_t first_dma_addr = 0; + struct nes_pd *nespd = to_nespd(pd); + struct nes_vnic *nesvnic = to_nesvnic(pd->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct ib_mr *ibmr; + struct ib_umem_chunk *chunk; + struct nes_ucontext *nes_ucontext; + struct nes_pbl *nespbl; + struct nes_mr *nesmr; +#ifndef OFED_1_2 + struct ib_umem *region; +#endif + struct nes_mem_reg_req req; + struct nes_vpbl vpbl; + struct nes_root_vpbl root_vpbl; + int j; + int page_count = 0; + int err, pbl_depth = 0; + int ret; + u32 stag; + u32 stag_index = 0; + u32 next_stag_index; + u32 driver_key; + u32 root_pbl_index = 0; + u32 cur_pbl_index = 0; + u16 pbl_count; + u8 single_page = 1; + u8 stag_key; + + + nes_debug(NES_DBG_MR, "\n"); + +#ifdef OFED_1_2 + nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u," + " offset = %u, page size = %u.\n", + region->user_base, region->virt_base, (u32)region->length, + region->offset, region->page_size); +#else + region = ib_umem_get(pd->uobject->context, start, length, acc); + if (IS_ERR(region)) { + return (struct ib_mr *)region; + } + + nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u\n", + (unsigned long int)start, (unsigned long int)virt, (u32)length); +#endif + + if (ib_copy_from_udata(&req, udata, sizeof(req))) + return ERR_PTR(-EFAULT); + nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type); + + switch (req.reg_type) { + case IWNES_MEMREG_TYPE_MEM: + pbl_depth = 0; + region_length = 0; + vpbl.pbl_vbase = NULL; + root_vpbl.pbl_vbase = NULL; + root_vpbl.pbl_pbase = 0; + + get_random_bytes(&next_stag_index, sizeof(next_stag_index)); + stag_key = (u8)next_stag_index; + + driver_key = 0; + + next_stag_index >>= 8; + next_stag_index %= nesadapter->max_mr; + + err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, + nesadapter->max_mr, &stag_index, &next_stag_index); + if (err) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + return ERR_PTR(err); + } + + nesmr = kmalloc(sizeof(*nesmr), GFP_KERNEL); + if (!nesmr) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + return ERR_PTR(-ENOMEM); + } +#ifndef OFED_1_2 + nesmr->region = region; +#endif + + list_for_each_entry(chunk, ®ion->chunk_list, list) { + nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n", + chunk->nents, chunk->nmap); + for (j = 0; j < chunk->nmap; ++j) { + if ((page_count&0x01FF) == 0) { + if (page_count>(1024*512)) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, + vpbl.pbl_pbase); + nes_free_resource(nesadapter, + nesadapter->allocated_mrs, stag_index); + kfree(nesmr); + return ERR_PTR(-E2BIG); + } + if (1 == root_pbl_index) { + root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, + 8192, &root_vpbl.pbl_pbase); + nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n", + root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase); + if (!root_vpbl.pbl_vbase) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, + vpbl.pbl_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_mrs, + stag_index); + kfree(nesmr); + return ERR_PTR(-ENOMEM); + } + root_vpbl.leaf_vpbl = kmalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, + GFP_KERNEL); + if (!root_vpbl.leaf_vpbl) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, + root_vpbl.pbl_pbase); + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, + vpbl.pbl_pbase); + nes_free_resource(nesadapter, nesadapter->allocated_mrs, + stag_index); + kfree(nesmr); + return ERR_PTR(-ENOMEM); + } + root_vpbl.pbl_vbase[0].pa_low = + cpu_to_le32((u32)vpbl.pbl_pbase); + root_vpbl.pbl_vbase[0].pa_high = + cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); + root_vpbl.leaf_vpbl[0] = vpbl; + } + vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, + &vpbl.pbl_pbase); + nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n", + vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase); + if (!vpbl.pbl_vbase) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + ibmr = ERR_PTR(-ENOMEM); + kfree(nesmr); + goto reg_user_mr_err; + } + if (1 <= root_pbl_index) { + root_vpbl.pbl_vbase[root_pbl_index].pa_low = + cpu_to_le32((u32)vpbl.pbl_pbase); + root_vpbl.pbl_vbase[root_pbl_index].pa_high = + cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32))); + root_vpbl.leaf_vpbl[root_pbl_index] = vpbl; + } + root_pbl_index++; + cur_pbl_index = 0; + } + if (sg_dma_address(&chunk->page_list[j]) & ~PAGE_MASK) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); + nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n", + (unsigned int) sg_dma_address(&chunk->page_list[j])); + ibmr = ERR_PTR(-EINVAL); + kfree(nesmr); + goto reg_user_mr_err; + } + + if (!sg_dma_len(&chunk->page_list[j])) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + nes_free_resource(nesadapter, nesadapter->allocated_mrs, + stag_index); + nes_debug(NES_DBG_MR, "Invalid Buffer Size\n"); + ibmr = ERR_PTR(-EINVAL); + kfree(nesmr); + goto reg_user_mr_err; + } + + region_length += sg_dma_len(&chunk->page_list[j]); + if (single_page) { + if (page_count != 0) { + if ((last_dma_addr+PAGE_SIZE) != + sg_dma_address(&chunk->page_list[j])) + single_page = 0; + last_dma_addr = sg_dma_address(&chunk->page_list[j]); + } else { + first_dma_addr = sg_dma_address(&chunk->page_list[j]); + last_dma_addr = first_dma_addr; + } + } + + vpbl.pbl_vbase[cur_pbl_index].pa_low = + cpu_to_le32((u32)sg_dma_address(&chunk->page_list[j])); + vpbl.pbl_vbase[cur_pbl_index].pa_high = + cpu_to_le32((u32)((((u64)sg_dma_address(&chunk->page_list[j]))>>32))); + cur_pbl_index++; + page_count++; + } + } + + nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x," + " stag_key=0x%08x\n", + stag_index, driver_key, stag_key); + stag = stag_index << 8; + stag |= driver_key; + stag += (u32)stag_key; + if (stag == 0) { + stag = 1; + } + +#ifdef OFED_1_2 + iova_start = (u64)region->virt_base; +#else + iova_start = virt; +#endif + nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X," + " index = 0x%08X, region->length=0x%08llx\n", + stag, (unsigned int)iova_start, + (unsigned int)region_length, stag_index, + (unsigned long long)region->length); + + /* Make the leaf PBL the root if only one PBL */ + if (root_pbl_index == 1) { + root_vpbl.pbl_pbase = vpbl.pbl_pbase; + } + + if (single_page) { + pbl_count = 0; + } else { + pbl_count = root_pbl_index; + first_dma_addr = 0; + } + ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl, + first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start); + + nes_debug(NES_DBG_MR, "ret=%d\n", ret); + + if (ret == 0) { + nesmr->ibmr.rkey = stag; + nesmr->ibmr.lkey = stag; + nesmr->mode = IWNES_MEMREG_TYPE_MEM; + ibmr = &nesmr->ibmr; + nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0; + nesmr->pbls_used = pbl_count; + if (pbl_count > 1) { + nesmr->pbls_used++; + } + } else { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + kfree(nesmr); + ibmr = ERR_PTR(-ENOMEM); + } + + reg_user_mr_err: + /* free the resources */ + if (root_pbl_index == 1) { + pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, + vpbl.pbl_pbase); + } else { + for (j=0; j<root_pbl_index; j++) { + pci_free_consistent(nesdev->pcidev, 4096, + root_vpbl.leaf_vpbl[j].pbl_vbase, + root_vpbl.leaf_vpbl[j].pbl_pbase); + } + kfree(root_vpbl.leaf_vpbl); + pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, + root_vpbl.pbl_pbase); + } + + nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr); + + return ibmr; + break; + case IWNES_MEMREG_TYPE_QP: +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + return ERR_PTR(-ENOSYS); + break; + case IWNES_MEMREG_TYPE_CQ: + nespbl = kmalloc(sizeof(*nespbl), GFP_KERNEL); + if (!nespbl) { + nes_debug(NES_DBG_MR, "Unable to allocate PBL\n"); +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + return ERR_PTR(-ENOMEM); + } + memset(nespbl, 0, sizeof(*nespbl)); + nesmr = kmalloc(sizeof(*nesmr), GFP_KERNEL); + if (!nesmr) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + kfree(nespbl); + nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n"); + return ERR_PTR(-ENOMEM); + } + memset(nesmr, 0, sizeof(*nesmr)); +#ifndef OFED_1_2 + nesmr->region = region; +#endif + nes_ucontext = to_nesucontext(pd->uobject->context); + pbl_depth = region->length >> PAGE_SHIFT; + pbl_depth += (region->length & ~PAGE_MASK) ? 1 : 0; + nespbl->pbl_size = pbl_depth*sizeof(u64); + nes_debug(NES_DBG_MR, "Attempting to allocate CQ PBL memory, %u bytes, %u entries.\n", + nespbl->pbl_size, pbl_depth); + pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size, + &nespbl->pbl_pbase); + if (!pbl) { +#ifndef OFED_1_2 + ib_umem_release(region); +#endif + kfree(nesmr); + kfree(nespbl); + nes_debug(NES_DBG_MR, "Unable to allocate cq PBL memory\n"); + return ERR_PTR(-ENOMEM); + } + + nespbl->pbl_vbase = pbl; +#ifdef OFED_1_2 + nespbl->user_base = region->user_base; +#else + nespbl->user_base = start; +#endif + nes_debug(NES_DBG_MR, "Allocated CQ PBL memory, %u bytes, pbl_pbase=%p," + " pbl_vbase=%p user_base=0x%lx\n", + nespbl->pbl_size, (void *)nespbl->pbl_pbase, + (void*)nespbl->pbl_vbase, nespbl->user_base); + + list_for_each_entry(chunk, ®ion->chunk_list, list) { + for (j = 0; j < chunk->nmap; ++j) { + ((u32 *)pbl)[0] = cpu_to_le32((u32)sg_dma_address(&chunk->page_list[j])); + ((u32 *)pbl)[1] = cpu_to_le32(((u64)sg_dma_address(&chunk->page_list[j]))>>32); + nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl, *pbl, le32_to_cpu(((u32 *)pbl)[1]), le32_to_cpu(((u32 *)pbl)[0])); + pbl++; + } + } + list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list); + nesmr->ibmr.rkey = -1; + nesmr->ibmr.lkey = -1; + nesmr->mode = IWNES_MEMREG_TYPE_CQ; + return &nesmr->ibmr; + break; + } + + return ERR_PTR(-ENOSYS); +} + + +/** + * nes_dereg_mr + */ +static int nes_dereg_mr(struct ib_mr *ib_mr) +{ + struct nes_mr *nesmr = to_nesmr(ib_mr); + struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + struct nes_hw_cqp_wqe *cqp_wqe; + struct nes_cqp_request *cqp_request; + unsigned long flags; + int ret; + u16 major_code; + u16 minor_code; + +#ifndef OFED_1_2 + if (nesmr->region) { + ib_umem_release(nesmr->region); + } +#endif + if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) { + kfree(nesmr); + return 0; + } + + /* Deallocate the region with the adapter */ + + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); + return -ENOMEM; + } + cqp_request->waiting = 1; + cqp_wqe = &cqp_request->cqp_wqe; + + spin_lock_irqsave(&nesdev->cqp.lock, flags); + if (0 != nesmr->pbls_used) { + if (nesmr->pbl_4k) { + nesadapter->free_4kpbl += nesmr->pbls_used; + if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) { + printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n", + nesadapter->free_4kpbl, nesadapter->max_4kpbl); + } + } else { + nesadapter->free_256pbl += nesmr->pbls_used; + if (nesadapter->free_256pbl > nesadapter->max_256pbl) { + printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n", + nesadapter->free_256pbl, nesadapter->max_256pbl); + } + } + } + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO | + NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_STAG_WQE_STAG_IDX] = cpu_to_le32(ib_mr->rkey); + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey); + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u," + " CQP Major:Minor codes = 0x%04X:0x%04X\n", + ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code); + + nes_free_resource(nesadapter, nesadapter->allocated_mrs, + (ib_mr->rkey & 0x0fffff00) >> 8); + + kfree(nesmr); + + major_code = cqp_request->major_code; + minor_code = cqp_request->minor_code; + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + if (!ret) { + nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag," + " ib_mr=%p, rkey = 0x%08X\n", + ib_mr, ib_mr->rkey); + return -ETIME; + } else if (major_code) { + nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting" + " to destroy STag, ib_mr=%p, rkey = 0x%08X\n", + major_code, minor_code, ib_mr, ib_mr->rkey); + return -EIO; + } else + return 0; +} + + +/** + * show_rev + */ +static ssize_t show_rev(struct class_device *cdev, char *buf) +{ + struct nes_ib_device *nesibdev = + container_of(cdev, struct nes_ib_device, ibdev.class_dev); + struct nes_vnic *nesvnic = nesibdev->nesvnic; + + nes_debug(NES_DBG_INIT, "\n"); + return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev); +} + + +/** + * show_fw_ver + */ +static ssize_t show_fw_ver(struct class_device *cdev, char *buf) +{ + struct nes_ib_device *nesibdev = + container_of(cdev, struct nes_ib_device, ibdev.class_dev); + struct nes_vnic *nesvnic = nesibdev->nesvnic; + + nes_debug(NES_DBG_INIT, "\n"); + return sprintf(buf, "%x.%x.%x\n", + (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32), + (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff, + (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff)); +} + + +/** + * show_hca + */ +static ssize_t show_hca(struct class_device *cdev, char *buf) +{ + nes_debug(NES_DBG_INIT, "\n"); + return sprintf(buf, "NES020\n"); +} + + +/** + * show_board + */ +static ssize_t show_board(struct class_device *cdev, char *buf) +{ + nes_debug(NES_DBG_INIT, "\n"); + return sprintf(buf, "%.*s\n", 32, "NES020 Board ID"); +} + + +static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); +static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); +static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); +static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); + +static struct class_device_attribute *nes_class_attributes[] = { + &class_device_attr_hw_rev, + &class_device_attr_fw_ver, + &class_device_attr_hca_type, + &class_device_attr_board_id +}; + + +/** + * nes_query_qp + */ +static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_qp_init_attr *init_attr) +{ + struct nes_qp *nesqp = to_nesqp(ibqp); + + nes_debug(NES_DBG_QP, "\n"); + + attr->qp_access_flags = 0; + attr->cap.max_send_wr = nesqp->hwqp.sq_size; + attr->cap.max_recv_wr = nesqp->hwqp.rq_size; + attr->cap.max_recv_sge = 1; + if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { + init_attr->cap.max_inline_data = 0; + } else { + init_attr->cap.max_inline_data = 64; + } + + init_attr->event_handler = nesqp->ibqp.event_handler; + init_attr->qp_context = nesqp->ibqp.qp_context; + init_attr->send_cq = nesqp->ibqp.send_cq; + init_attr->recv_cq = nesqp->ibqp.recv_cq; + init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq; + init_attr->cap = attr->cap; + + return 0; +} + + +/** + * nes_hw_modify_qp + */ +int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp, u32 next_iwarp_state, u32 wait_completion) +{ + u64 u64temp; + struct nes_hw_cqp_wqe *cqp_wqe; + /* struct iw_cm_id *cm_id = nesqp->cm_id; */ + /* struct iw_cm_event cm_event; */ + struct nes_cqp_request *cqp_request; + unsigned long flags; + int ret; + u16 major_code; + + nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); + + cqp_request = nes_get_cqp_request(nesdev, NES_CQP_REQUEST_NOT_HOLDING_LOCK); + if (NULL == cqp_request) { + nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n"); + return -ENOMEM; + } + if (wait_completion) { + cqp_request->waiting = 1; + } else { + cqp_request->waiting = 0; + } + cqp_wqe = &cqp_request->cqp_wqe; + + cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32( + NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state); + nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n", + next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX])); + + cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesqp->hwqp.qp_id); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(&nesdev->cqp))); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(&nesdev->cqp))>>32)); + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0; + cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0; + u64temp = (u64)nesqp->nesqp_context_pbase; + cqp_wqe->wqe_words[NES_CQP_QP_WQE_CONTEXT_LOW_IDX] = cpu_to_le32((u32)u64temp); + cqp_wqe->wqe_words[NES_CQP_QP_WQE_CONTEXT_HIGH_IDX] = cpu_to_le32((u32)(u64temp >> 32)); + + atomic_set(&cqp_request->refcount, 2); + nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_NOT_HOLDING_LOCK, + NES_CQP_REQUEST_RING_DOORBELL); + + /* Wait for CQP */ + if (wait_completion) { + /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n", + nesqp->hwqp.qp_id); */ + ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), + NES_EVENT_TIMEOUT); + nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, " + "CQP Major:Minor codes = 0x%04X:0x%04X.\n", + nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code); + major_code = cqp_request->major_code; + if (major_code) { + nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed" + "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n", + nesqp->hwqp.qp_id, cqp_request->major_code, + cqp_request->minor_code, next_iwarp_state); + } + if (atomic_dec_and_test(&cqp_request->refcount)) { + if (cqp_request->dynamic) { + atomic_inc(&cqp_reqs_dynfreed); + kfree(cqp_request); + } else { + atomic_inc(&cqp_reqs_freed); + spin_lock_irqsave(&nesdev->cqp.lock, flags); + list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); + spin_unlock_irqrestore(&nesdev->cqp.lock, flags); + } + } + if (!ret) + return -ETIME; + else if (major_code) + return -EIO; + else + return 0; + } else { + return 0; + } +} + + +/** + * nes_modify_qp + */ +int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_udata *udata) +{ + struct nes_qp *nesqp = to_nesqp(ibqp); + struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); + struct nes_device *nesdev = nesvnic->nesdev; + /* u32 cqp_head; */ + /* u32 counter; */ + u32 next_iwarp_state = 0; + int err; + unsigned long qplockflags; + int ret; + u16 original_last_aeq; + u8 issue_modify_qp = 0; + u8 issue_disconnect = 0; + u8 dont_wait = 0; + + nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u," + " iwarp_state=0x%X, refcount=%d\n", + nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state, + nesqp->iwarp_state, atomic_read(&nesqp->refcount)); + + nes_add_ref(&nesqp->ibqp); + spin_lock_irqsave(&nesqp->lock, qplockflags); + + nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X," + " QP Access Flags=0x%X, attr_mask = 0x%0x\n", + nesqp->hwqp.qp_id, nesqp->hw_iwarp_state, + nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask); + + if (attr_mask & IB_QP_STATE) { + switch (attr->qp_state) { + case IB_QPS_INIT: + nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n", + nesqp->hwqp.qp_id); + if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE; + issue_modify_qp = 1; + break; + case IB_QPS_RTR: + nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n", + nesqp->hwqp.qp_id); + if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE; + issue_modify_qp = 1; + break; + case IB_QPS_RTS: + nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n", + nesqp->hwqp.qp_id); + if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + if (nesqp->cm_id == NULL) { + nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n", + nesqp->hwqp.qp_id ); + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS; + if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS) + next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID | + NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID; + issue_modify_qp = 1; + nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED; + nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS; + nesqp->hte_added = 1; + break; + case IB_QPS_SQD: + issue_modify_qp = 1; + nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n", + nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail); + if (nesqp->iwarp_state==(u32)NES_CQP_QP_IWARP_STATE_CLOSING) { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return 0; + } else { + if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) { + nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing" + " ignored due to current iWARP state\n", + nesqp->hwqp.qp_id); + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) { + nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing" + " already done based on hw state.\n", + nesqp->hwqp.qp_id); + issue_modify_qp = 0; + nesqp->in_disconnect = 0; + } + switch (nesqp->hw_iwarp_state) { + case NES_AEQE_IWARP_STATE_CLOSING: + next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; + case NES_AEQE_IWARP_STATE_TERMINATE: + next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE; + break; + case NES_AEQE_IWARP_STATE_ERROR: + next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR; + break; + default: + next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; + nesqp->in_disconnect = 1; + nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING; + break; + } + } + break; + case IB_QPS_SQE: + nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n", + nesqp->hwqp.qp_id); + if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */ + next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE; + nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE; + issue_modify_qp = 1; + nesqp->in_disconnect = 1; + break; + case IB_QPS_ERR: + case IB_QPS_RESET: + if (nesqp->iwarp_state==(u32)NES_CQP_QP_IWARP_STATE_ERROR) { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + } + nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n", + nesqp->hwqp.qp_id); + next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR; + /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */ + if (nesqp->hte_added) { + nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n"); + next_iwarp_state |= NES_CQP_QP_DEL_HTE; + nesqp->hte_added = 0; + } + if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) && + (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) { + next_iwarp_state |= NES_CQP_QP_RESET; + nesqp->in_disconnect = 1; + } else { + nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n", + nesqp->hwqp.qp_id, nesqp->hw_tcp_state); + dont_wait = 1; + } + issue_modify_qp = 1; + nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR; + break; + default: + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_rem_ref(&nesqp->ibqp); + return -EINVAL; + break; + } + + nesqp->ibqp_state = attr->qp_state; + if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == + (u32)NES_CQP_QP_IWARP_STATE_RTS) && + ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) > + (u32)NES_CQP_QP_IWARP_STATE_RTS)) { + nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK; + nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n", + nesqp->iwarp_state); + issue_disconnect = 1; + } else { + nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK; + nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n", + nesqp->iwarp_state); + } + } + + if (attr_mask & IB_QP_ACCESS_FLAGS) { + if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) { + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN | + NES_QPCONTEXT_MISC_RDMA_READ_EN); + issue_modify_qp = 1; + } + if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) { + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN); + issue_modify_qp = 1; + } + if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) { + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN); + issue_modify_qp = 1; + } + if (attr->qp_access_flags & IB_ACCESS_MW_BIND) { + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN); + issue_modify_qp = 1; + } + + if (nesqp->user_mode) { + nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN | + NES_QPCONTEXT_MISC_RDMA_READ_EN); + issue_modify_qp = 1; + } + } + + original_last_aeq = nesqp->last_aeq; + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + + nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp); + + ret = 0; + + + if (issue_modify_qp) { + nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n"); + ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1); + if (ret) + nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)" + " failed for QP%u.\n", + next_iwarp_state, nesqp->hwqp.qp_id); + + } + + if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) { + nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d)," + " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), + original_last_aeq, nesqp->last_aeq); + if ((!ret) || + ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) && + (ret))) { + if (dont_wait) { + if (nesqp->cm_id && nesqp->hw_tcp_state != 0) { + nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d)," + " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), + original_last_aeq, nesqp->last_aeq); + /* this one is for the cm_disconnect thread */ + nes_add_ref(&nesqp->ibqp); + spin_lock_irqsave(&nesqp->lock, qplockflags); + nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; + nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_cm_disconn(nesqp); + } else { + nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); + nes_rem_ref(&nesqp->ibqp); + } + } else { + spin_lock_irqsave(&nesqp->lock, qplockflags); + if (nesqp->cm_id) { + /* These two are for the timer thread */ + if (atomic_inc_return(&nesqp->close_timer_started)==1) { + nes_add_ref(&nesqp->ibqp); + nesqp->cm_id->add_ref(nesqp->cm_id); + nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d)," + " need ae to finish up, original_last_aeq = 0x%04X." + " last_aeq = 0x%04X, scheduling timer.\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), + original_last_aeq, nesqp->last_aeq); + schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0); + } + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + } else { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d)," + " need ae to finish up, original_last_aeq = 0x%04X." + " last_aeq = 0x%04X.\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), + original_last_aeq, nesqp->last_aeq); + } + } + } else { + nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up," + " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), + original_last_aeq, nesqp->last_aeq); + nes_rem_ref(&nesqp->ibqp); + } + } else { + nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up," + " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), + original_last_aeq, nesqp->last_aeq); + nes_rem_ref(&nesqp->ibqp); + } + + err = 0; + + nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n", + nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); + + return err; +} + + +/** + * nes_muticast_attach + */ +static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) +{ + nes_debug(NES_DBG_INIT, "\n"); + return -ENOSYS; +} + + +/** + * nes_multicast_detach + */ +static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) +{ + nes_debug(NES_DBG_INIT, "\n"); + return -ENOSYS; +} + + +/** + * nes_process_mad + */ +static int nes_process_mad(struct ib_device *ibdev, int mad_flags, + u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh, + struct ib_mad *in_mad, struct ib_mad *out_mad) +{ + nes_debug(NES_DBG_INIT, "\n"); + return -ENOSYS; +} + + +/** + * nes_post_send + */ +static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr, + struct ib_send_wr **bad_wr) +{ + u64 u64temp; + unsigned long flags = 0; + struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_qp *nesqp = to_nesqp(ibqp); + struct nes_hw_qp_wqe *wqe; + int err; + int sge_index; + u32 qsize = nesqp->hwqp.sq_size; + u32 head; + u32 wqe_misc; + u32 wqe_count; + u32 counter; + u32 total_payload_length; + + err = 0; + wqe_misc = 0; + wqe_count = 0; + total_payload_length = 0; + + nes_debug(NES_DBG_IW_TX, "\n"); + if (nesqp->ibqp_state > IB_QPS_RTS) + return -EINVAL; + + spin_lock_irqsave(&nesqp->lock, flags); + + head = nesqp->hwqp.sq_head; + + while (ib_wr) { + /* Check for SQ overflow */ + if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { + err = -EINVAL; + break; + } + + wqe = &nesqp->hwqp.sq_vbase[head]; + /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n", + nesqp->hwqp.qp_id, wqe, head); */ + u64temp = (u64)(ib_wr->wr_id); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX] = cpu_to_le32((u32)u64temp); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX] = cpu_to_le32((u32)((u64temp)>>32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(nesqp))); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(nesqp))>>32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX] |= cpu_to_le32(head); + + switch (ib_wr->opcode) { + case IB_WR_SEND: + if (ib_wr->send_flags & IB_SEND_SOLICITED) { + wqe_misc = NES_IWARP_SQ_OP_SENDSE; + } else { + wqe_misc = NES_IWARP_SQ_OP_SEND; + } + if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { + err = -EINVAL; + break; + } + if (ib_wr->send_flags & IB_SEND_FENCE) { + wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; + } + if ((ib_wr->send_flags & IB_SEND_INLINE) && + (0 == (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)) && + (ib_wr->sg_list[0].length <= 64)) { + memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], + (void *)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); + wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = cpu_to_le32( + ib_wr->sg_list[0].length); + wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; + } else { + total_payload_length = 0; + for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) { + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4)] = + cpu_to_le32((u32)ib_wr->sg_list[sge_index].addr); + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX+(sge_index*4)] = + cpu_to_le32((u32)(ib_wr->sg_list[sge_index].addr>>32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX+(sge_index*4)] = + cpu_to_le32(ib_wr->sg_list[sge_index].length); + wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX+(sge_index*4)] = + cpu_to_le32(ib_wr->sg_list[sge_index].lkey); + total_payload_length += ib_wr->sg_list[sge_index].length; + } + wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = + cpu_to_le32(total_payload_length); + } + + break; + case IB_WR_RDMA_WRITE: + wqe_misc = NES_IWARP_SQ_OP_RDMAW; + if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { + nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n", + ib_wr->num_sge, + nesdev->nesadapter->max_sge); + err = -EINVAL; + break; + } + if (ib_wr->send_flags & IB_SEND_FENCE) { + wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; + } + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = + cpu_to_le32(ib_wr->wr.rdma.rkey); + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = + cpu_to_le32(ib_wr->wr.rdma.remote_addr); + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = + cpu_to_le32((u32)(ib_wr->wr.rdma.remote_addr >> 32)); + + if ((ib_wr->send_flags & IB_SEND_INLINE) && + (0 == (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)) && + (ib_wr->sg_list[0].length <= 64)) { + memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], + (void *)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); + wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = cpu_to_le32( + ib_wr->sg_list[0].length); + wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; + } else { + total_payload_length = 0; + for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) { + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4)] = + cpu_to_le32((u32)ib_wr->sg_list[sge_index].addr); + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX+(sge_index*4)] = + cpu_to_le32((u32)(ib_wr->sg_list[sge_index].addr>>32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX+(sge_index*4)] = + cpu_to_le32(ib_wr->sg_list[sge_index].length); + wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX+(sge_index*4)] = + cpu_to_le32(ib_wr->sg_list[sge_index].lkey); + total_payload_length += ib_wr->sg_list[sge_index].length; + } + wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = + cpu_to_le32(total_payload_length); + } + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = + wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]; + break; + case IB_WR_RDMA_READ: + /* iWARP only supports 1 sge for RDMA reads */ + if (ib_wr->num_sge > 1) { + nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n", + ib_wr->num_sge); + err = -EINVAL; + break; + } + wqe_misc = NES_IWARP_SQ_OP_RDMAR; + + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = + cpu_to_le32(ib_wr->wr.rdma.remote_addr); + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = + cpu_to_le32((u32)(ib_wr->wr.rdma.remote_addr >> 32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = + cpu_to_le32(ib_wr->wr.rdma.rkey); + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = + cpu_to_le32(ib_wr->sg_list->length); + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = + cpu_to_le32(ib_wr->sg_list->addr); + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = + cpu_to_le32((u32)(ib_wr->sg_list->addr >> 32)); + wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = + cpu_to_le32(ib_wr->sg_list->lkey); + break; + default: + /* error */ + err = -EINVAL; + break; + } + + if (ib_wr->send_flags & IB_SEND_SIGNALED) { + wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL; + } + wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc); + + ib_wr = ib_wr->next; + head++; + wqe_count++; + if (head >= qsize) + head = 0; + + } + + nesqp->hwqp.sq_head = head; + barrier(); + while (wqe_count) { + counter = min(wqe_count, ((u32)255)); + wqe_count -= counter; + nes_write32(nesdev->regs + NES_WQE_ALLOC, + (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id); + } + + spin_unlock_irqrestore(&nesqp->lock, flags); + + if (err) + *bad_wr = ib_wr; + return err; +} + + +/** + * nes_post_recv + */ +static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr, + struct ib_recv_wr **bad_wr) +{ + u64 u64temp; + unsigned long flags = 0; + struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_qp *nesqp = to_nesqp(ibqp); + struct nes_hw_qp_wqe *wqe; + int err = 0; + int sge_index; + u32 qsize = nesqp->hwqp.rq_size; + u32 head; + u32 wqe_count = 0; + u32 counter; + u32 total_payload_length; + + nes_debug(NES_DBG_IW_RX, "\n"); + if (nesqp->ibqp_state > IB_QPS_RTS) + return -EINVAL; + + spin_lock_irqsave(&nesqp->lock, flags); + + head = nesqp->hwqp.rq_head; + + while (ib_wr) { + if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { + err = -EINVAL; + break; + } + /* Check for RQ overflow */ + if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) { + err = -EINVAL; + break; + } + + nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge); + wqe = &nesqp->hwqp.rq_vbase[head]; + + /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n", + nesqp->hwqp.qp_id, wqe, head); */ + u64temp = (u64)(ib_wr->wr_id); + wqe->wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX] = cpu_to_le32((u32)(u64temp)); + wqe->wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX] = cpu_to_le32((u32)((u64temp)>>32)); + wqe->wqe_words[NES_IWARP_RQ_WQE_COMP_CTX_LOW_IDX] = cpu_to_le32((u32)((u64)(nesqp))); + wqe->wqe_words[NES_IWARP_RQ_WQE_COMP_CTX_HIGH_IDX] = cpu_to_le32((u32)(((u64)(nesqp))>>32)); + wqe->wqe_words[NES_IWARP_RQ_WQE_COMP_CTX_LOW_IDX] |= cpu_to_le32(head); + + total_payload_length = 0; + for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) { + wqe->wqe_words[NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4)] = + cpu_to_le32((u32)ib_wr->sg_list[sge_index].addr); + wqe->wqe_words[NES_IWARP_RQ_WQE_FRAG0_HIGH_IDX+(sge_index*4)] = + cpu_to_le32((u32)(ib_wr->sg_list[sge_index].addr >> 32)); + wqe->wqe_words[NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4)] = + cpu_to_le32(ib_wr->sg_list[sge_index].length); + wqe->wqe_words[NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4)] = + cpu_to_le32(ib_wr->sg_list[sge_index].lkey); + total_payload_length += ib_wr->sg_list[sge_index].length; + } + wqe->wqe_words[NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX] = + cpu_to_le32(total_payload_length); + + ib_wr = ib_wr->next; + head++; + wqe_count++; + if (head >= qsize) + head = 0; + } + + nesqp->hwqp.rq_head = head; + barrier(); + while (wqe_count) { + counter = min(wqe_count, ((u32)255)); + wqe_count -= counter; + nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id); + } + + spin_unlock_irqrestore(&nesqp->lock, flags); + + if (err) + *bad_wr = ib_wr; + return err; +} + + +/** + * nes_poll_cq + */ +static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) +{ + u64 u64temp; + u64 wrid; + /* u64 u64temp; */ + unsigned long flags = 0; + struct nes_vnic *nesvnic = to_nesvnic(ibcq->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_cq *nescq = to_nescq(ibcq); + struct nes_qp *nesqp; + struct nes_hw_cqe cqe; + u32 head; + u32 wq_tail; + u32 cq_size; + u32 cqe_count=0; + u32 wqe_index; + u32 u32temp; + /* u32 counter; */ + + nes_debug(NES_DBG_CQ, "\n"); + + spin_lock_irqsave(&nescq->lock, flags); + + head = nescq->hw_cq.cq_head; + cq_size = nescq->hw_cq.cq_size; + + while (cqe_count<num_entries) { + if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) & + NES_CQE_VALID) { + cqe = nescq->hw_cq.cq_vbase[head]; + nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0; + u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); + wqe_index = u32temp & + (nesdev->nesadapter->max_qp_wr - 1); + u32temp &= ~(NES_SW_CONTEXT_ALIGN-1); + /* parse CQE, get completion context from WQE (either rq or sq */ + u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) | + ((u64)u32temp); + nesqp = *((struct nes_qp **)&u64temp); + memset(entry, 0, sizeof *entry); + if (0 == cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]) { + entry->status = IB_WC_SUCCESS; + } else { + entry->status = IB_WC_WR_FLUSH_ERR; + } + + entry->qp = &nesqp->ibqp; + entry->src_qp = nesqp->hwqp.qp_id; + + if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) { + if (nesqp->skip_lsmm) { + nesqp->skip_lsmm = 0; + wq_tail = nesqp->hwqp.sq_tail++; + } + + /* Working on a SQ Completion*/ + wq_tail = wqe_index; + nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1); + wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX])))<<32) | + ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX]))); + entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail]. + wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]); + + switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail]. + wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) { + case NES_IWARP_SQ_OP_RDMAW: + nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n"); + entry->opcode = IB_WC_RDMA_WRITE; + break; + case NES_IWARP_SQ_OP_RDMAR: + nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n"); + entry->opcode = IB_WC_RDMA_READ; + entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail]. + wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]); + break; + case NES_IWARP_SQ_OP_SENDINV: + case NES_IWARP_SQ_OP_SENDSEINV: + case NES_IWARP_SQ_OP_SEND: + case NES_IWARP_SQ_OP_SENDSE: + nes_debug(NES_DBG_CQ, "Operation = Send.\n"); + entry->opcode = IB_WC_SEND; + break; + } + } else { + /* Working on a RQ Completion*/ + wq_tail = wqe_index; + nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1); + entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]); + wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) | + ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32); + entry->opcode = IB_WC_RECV; + } + entry->wr_id = wrid; + + if (++head >= cq_size) + head = 0; + cqe_count++; + nescq->polled_completions++; + if ((nescq->polled_completions > (cq_size/2)) || + (nescq->polled_completions == 255)) { + nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes" + " are pending %u of %u.\n", + nescq->hw_cq.cq_number, nescq->polled_completions, cq_size); + nes_write32(nesdev->regs+NES_CQE_ALLOC, + nescq->hw_cq.cq_number | (nescq->polled_completions << 16)); + nescq->polled_completions = 0; + } + entry++; + } else + break; + } + + if (nescq->polled_completions) { + nes_write32(nesdev->regs+NES_CQE_ALLOC, + nescq->hw_cq.cq_number | (nescq->polled_completions << 16)); + nescq->polled_completions = 0; + } + + nescq->hw_cq.cq_head = head; + nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n", + cqe_count, nescq->hw_cq.cq_number); + + spin_unlock_irqrestore(&nescq->lock, flags); + + return cqe_count; +} + + +/** + * nes_req_notify_cq + */ +#ifdef OFED_1_2 +static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify notify) +#else +static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) +#endif + { + struct nes_vnic *nesvnic = to_nesvnic(ibcq->device); + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_cq *nescq = to_nescq(ibcq); + u32 cq_arm; + + nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n", + nescq->hw_cq.cq_number); + + cq_arm = nescq->hw_cq.cq_number; +#ifdef OFED_1_2 + if (notify == IB_CQ_NEXT_COMP) + cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT; + else if (notify == IB_CQ_SOLICITED) + cq_arm |= NES_CQE_ALLOC_NOTIFY_SE; +#else + if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP) + cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT; + else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED) + cq_arm |= NES_CQE_ALLOC_NOTIFY_SE; +#endif + else + return -EINVAL; + + nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm); + nes_read32(nesdev->regs+NES_CQE_ALLOC); + + return 0; +} + + +/** + * nes_init_ofa_device + */ +struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev) { + struct nes_ib_device *nesibdev; + struct nes_vnic *nesvnic = netdev_priv(netdev); + struct nes_device *nesdev = nesvnic->nesdev; + + nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device)); + if (nesibdev == NULL) { + return NULL; + } + strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX); + nesibdev->ibdev.owner = THIS_MODULE; + + nesibdev->ibdev.node_type = RDMA_NODE_RNIC; + memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid)); + memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6); + + nesibdev->ibdev.uverbs_cmd_mask = + (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | + (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | + (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | + (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | + (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | + (1ull << IB_USER_VERBS_CMD_REG_MR) | + (1ull << IB_USER_VERBS_CMD_DEREG_MR) | + (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | + (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | + (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | + (1ull << IB_USER_VERBS_CMD_CREATE_AH) | + (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | + (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | + (1ull << IB_USER_VERBS_CMD_CREATE_QP) | + (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | + (1ull << IB_USER_VERBS_CMD_POLL_CQ) | + (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | + (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | + (1ull << IB_USER_VERBS_CMD_BIND_MW) | + (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) | + (1ull << IB_USER_VERBS_CMD_POST_RECV) | + (1ull << IB_USER_VERBS_CMD_POST_SEND); + + nesibdev->ibdev.phys_port_cnt = 1; +#ifndef OFED_1_2 + nesibdev->ibdev.num_comp_vectors = 1; +#endif + nesibdev->ibdev.dma_device = &nesdev->pcidev->dev; + nesibdev->ibdev.class_dev.dev = &nesdev->pcidev->dev; + nesibdev->ibdev.query_device = nes_query_device; + nesibdev->ibdev.query_port = nes_query_port; + nesibdev->ibdev.modify_port = nes_modify_port; + nesibdev->ibdev.query_pkey = nes_query_pkey; + nesibdev->ibdev.query_gid = nes_query_gid; + nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext; + nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext; + nesibdev->ibdev.mmap = nes_mmap; + nesibdev->ibdev.alloc_pd = nes_alloc_pd; + nesibdev->ibdev.dealloc_pd = nes_dealloc_pd; + nesibdev->ibdev.create_ah = nes_create_ah; + nesibdev->ibdev.destroy_ah = nes_destroy_ah; + nesibdev->ibdev.create_qp = nes_create_qp; + nesibdev->ibdev.modify_qp = nes_modify_qp; + nesibdev->ibdev.query_qp = nes_query_qp; + nesibdev->ibdev.destroy_qp = nes_destroy_qp; + nesibdev->ibdev.create_cq = nes_create_cq; + nesibdev->ibdev.destroy_cq = nes_destroy_cq; + nesibdev->ibdev.poll_cq = nes_poll_cq; + nesibdev->ibdev.get_dma_mr = nes_get_dma_mr; + nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr; + nesibdev->ibdev.reg_user_mr = nes_reg_user_mr; + nesibdev->ibdev.dereg_mr = nes_dereg_mr; + nesibdev->ibdev.alloc_mw = nes_alloc_mw; + nesibdev->ibdev.dealloc_mw = nes_dealloc_mw; + nesibdev->ibdev.bind_mw = nes_bind_mw; + + nesibdev->ibdev.alloc_fmr = nes_alloc_fmr; + nesibdev->ibdev.unmap_fmr = nes_unmap_fmr; + nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr; + nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr; + + nesibdev->ibdev.attach_mcast = nes_multicast_attach; + nesibdev->ibdev.detach_mcast = nes_multicast_detach; + nesibdev->ibdev.process_mad = nes_process_mad; + + nesibdev->ibdev.req_notify_cq = nes_req_notify_cq; + nesibdev->ibdev.post_send = nes_post_send; + nesibdev->ibdev.post_recv = nes_post_recv; + + nesibdev->ibdev.iwcm = kmalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL); + if (nesibdev->ibdev.iwcm == NULL) { + ib_dealloc_device(&nesibdev->ibdev); + return NULL; + } + nesibdev->ibdev.iwcm->add_ref = nes_add_ref; + nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref; + nesibdev->ibdev.iwcm->get_qp = nes_get_qp; + nesibdev->ibdev.iwcm->connect = nes_connect; + nesibdev->ibdev.iwcm->accept = nes_accept; + nesibdev->ibdev.iwcm->reject = nes_reject; + nesibdev->ibdev.iwcm->create_listen = nes_create_listen; + nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen; + + return nesibdev; +} + + +/** + * nes_destroy_ofa_device + */ +void nes_destroy_ofa_device(struct nes_ib_device *nesibdev) +{ + if (NULL == nesibdev) + return; + + nes_unregister_ofa_device(nesibdev); + + kfree(nesibdev->ibdev.iwcm); + ib_dealloc_device(&nesibdev->ibdev); + + nes_debug(NES_DBG_SHUTDOWN, "\n"); +} + + +/** + * nes_register_ofa_device + */ +int nes_register_ofa_device(struct nes_ib_device *nesibdev) +{ + struct nes_vnic *nesvnic = nesibdev->nesvnic; + struct nes_device *nesdev = nesvnic->nesdev; + struct nes_adapter *nesadapter = nesdev->nesadapter; + int i, ret; + + ret = ib_register_device(&nesvnic->nesibdev->ibdev); + if (ret) { + nes_debug(NES_DBG_INIT, "\n"); + return ret; + } + + /* Get the resources allocated to this device */ + nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count; + nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count; + nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count; + nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count; + + for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) { + nes_debug(NES_DBG_INIT, "call class_device_create_file\n"); + ret = class_device_create_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]); + if (ret) { + while (i > 0) { + i--; + class_device_remove_file(&nesibdev->ibdev.class_dev, + nes_class_attributes[i]); + } + ib_unregister_device(&nesibdev->ibdev); + return ret; + } + } + + nesvnic->of_device_registered = 1; + + return 0; +} + + +/** + * nes_unregister_ofa_device + */ +void nes_unregister_ofa_device(struct nes_ib_device *nesibdev) +{ + struct nes_vnic *nesvnic = nesibdev->nesvnic; + int i; + + if (NULL == nesibdev) + return; + + for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) { + class_device_remove_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]); + } + + if (nesvnic->of_device_registered) { + nes_debug(NES_DBG_SHUTDOWN, "call ib_unregister_device()\n"); + ib_unregister_device(&nesibdev->ibdev); + } + + nesvnic->of_device_registered = 0; + +} + - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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