| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Glenn Streiff | 16767 | 79.00% | 2 | 2.06% |
| Don Wood | 1447 | 6.82% | 7 | 7.22% |
| Chien Tin Tung | 966 | 4.55% | 10 | 10.31% |
| Sagi Grimberg | 539 | 2.54% | 3 | 3.09% |
| Tatyana Nikolova | 224 | 1.06% | 8 | 8.25% |
| Kamal Heib | 165 | 0.78% | 1 | 1.03% |
| Faisal Latif | 157 | 0.74% | 9 | 9.28% |
| Maciej Sosnowski | 154 | 0.73% | 1 | 1.03% |
| Ira Weiny | 146 | 0.69% | 2 | 2.06% |
| Miroslaw Walukiewicz | 124 | 0.58% | 2 | 2.06% |
| Christoph Hellwig | 98 | 0.46% | 3 | 3.09% |
| Roland Dreier | 74 | 0.35% | 8 | 8.25% |
| Matan Barak | 59 | 0.28% | 4 | 4.12% |
| Parav Pandit | 55 | 0.26% | 2 | 2.06% |
| Yishai Hadas | 44 | 0.21% | 1 | 1.03% |
| Tony Jones | 29 | 0.14% | 1 | 1.03% |
| Frank Zago | 25 | 0.12% | 2 | 2.06% |
| Kees Cook | 18 | 0.08% | 2 | 2.06% |
| Shani Michaelli | 17 | 0.08% | 1 | 1.03% |
| Eli Cohen | 13 | 0.06% | 1 | 1.03% |
| Or Gerlitz | 12 | 0.06% | 4 | 4.12% |
| Julia Lawall | 12 | 0.06% | 1 | 1.03% |
| Dan Carpenter | 11 | 0.05% | 1 | 1.03% |
| Steve Wise | 10 | 0.05% | 1 | 1.03% |
| Haggai Eran | 9 | 0.04% | 1 | 1.03% |
| Jason Gunthorpe | 7 | 0.03% | 2 | 2.06% |
| Bart Van Assche | 6 | 0.03% | 3 | 3.09% |
| Artemy Kovalyov | 5 | 0.02% | 1 | 1.03% |
| Vadim Makhervaks | 5 | 0.02% | 1 | 1.03% |
| Yann Droneaud | 5 | 0.02% | 1 | 1.03% |
| Tejun Heo | 3 | 0.01% | 1 | 1.03% |
| Ram Amrani | 3 | 0.01% | 1 | 1.03% |
| Geliang Tang | 3 | 0.01% | 1 | 1.03% |
| Harvey Harrison | 2 | 0.01% | 1 | 1.03% |
| Ralph Campbell | 2 | 0.01% | 1 | 1.03% |
| shamir rabinovitch | 2 | 0.01% | 1 | 1.03% |
| Arthur Kepner | 2 | 0.01% | 1 | 1.03% |
| Eric Dumazet | 2 | 0.01% | 1 | 1.03% |
| Joe Perches | 1 | 0.00% | 1 | 1.03% |
| Leon Romanovsky | 1 | 0.00% | 1 | 1.03% |
| Adrian Bunk | 1 | 0.00% | 1 | 1.03% |
| Total | 21225 | 97 |
/* * Copyright (c) 2006 - 2011 Intel Corporation. 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 <linux/highmem.h> #include <linux/slab.h> #include <asm/byteorder.h> #include <rdma/ib_verbs.h> #include <rdma/iw_cm.h> #include <rdma/ib_user_verbs.h> #include "nes.h" #include <rdma/ib_umem.h> atomic_t mod_qp_timouts; atomic_t qps_created; atomic_t sw_qps_destroyed; static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev); static int nes_dereg_mr(struct ib_mr *ib_mr); /** * nes_alloc_mw */ static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type, struct ib_udata *udata) { 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; if (type != IB_MW_TYPE_1) return ERR_PTR(-EINVAL); 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, NES_RESOURCE_MW); if (ret) { return ERR_PTR(ret); } nesmr = kzalloc(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); if (cqp_request == NULL) { 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); nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff)); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); atomic_set(&cqp_request->refcount, 2); nes_post_cqp_request(nesdev, cqp_request); /* Wait for CQP */ ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 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)) { nes_put_cqp_request(nesdev, cqp_request); kfree(nesmr); nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); if (!ret) { return ERR_PTR(-ETIME); } else { return ERR_PTR(-ENOMEM); } } nes_put_cqp_request(nesdev, cqp_request); 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; int ret; /* Deallocate the window with the adapter */ cqp_request = nes_get_cqp_request(nesdev); if (cqp_request == NULL) { nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); return -ENOMEM; } cqp_request->waiting = 1; cqp_wqe = &cqp_request->cqp_wqe; nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey); atomic_set(&cqp_request->refcount, 2); nes_post_cqp_request(nesdev, cqp_request); /* 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) err = -ETIME; else if (cqp_request->major_code) err = -EIO; nes_put_cqp_request(nesdev, cqp_request); nes_free_resource(nesadapter, nesadapter->allocated_mrs, (ibmw->rkey & 0x0fffff00) >> 8); kfree(nesmr); return err; } /* * nes_alloc_fast_mr */ static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd, u32 stag, u32 page_count) { struct nes_hw_cqp_wqe *cqp_wqe; struct nes_cqp_request *cqp_request; unsigned long flags; int ret; struct nes_adapter *nesadapter = nesdev->nesadapter; u32 opcode = 0; u16 major_code; u64 region_length = page_count * PAGE_SIZE; cqp_request = nes_get_cqp_request(nesdev); if (cqp_request == NULL) { nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); return -ENOMEM; } nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, " "region_length = %llu\n", page_count, region_length); cqp_request->waiting = 1; cqp_wqe = &cqp_request->cqp_wqe; spin_lock_irqsave(&nesadapter->pbl_lock, flags); if (nesadapter->free_4kpbl > 0) { nesadapter->free_4kpbl--; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); } else { /* No 4kpbl's available: */ spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nes_debug(NES_DBG_MR, "Out of Pbls\n"); nes_free_cqp_request(nesdev, cqp_request); return -ENOMEM; } opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR | NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO | NES_CQP_STAG_REM_ACC_EN; /* * The current OFED API does not support the zero based TO option. * If added then need to changed the NES_CQP_STAG_VA* option. Also, * the API does not support that ability to have the MR set for local * access only when created and not allow the SQ op to override. Given * this the remote enable must be set here. */ nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1); 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); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0); set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8)); 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); /* Wait for CQP */ ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), NES_EVENT_TIMEOUT); nes_debug(NES_DBG_MR, "Allocate 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; nes_put_cqp_request(nesdev, cqp_request); if (!ret || major_code) { spin_lock_irqsave(&nesadapter->pbl_lock, flags); nesadapter->free_4kpbl++; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); } if (!ret) return -ETIME; else if (major_code) return -EIO; return 0; } /* * nes_alloc_mr */ static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type, u32 max_num_sg) { 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; u32 next_stag_index; u8 stag_key = 0; u32 driver_key = 0; int err = 0; u32 stag_index = 0; struct nes_mr *nesmr; u32 stag; int ret; struct ib_mr *ibmr; if (mr_type != IB_MR_TYPE_MEM_REG) return ERR_PTR(-EINVAL); if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) return ERR_PTR(-E2BIG); /* * Note: Set to always use a fixed length single page entry PBL. This is to allow * for the fast_reg_mr operation to always know the size of the PBL. */ if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) return ERR_PTR(-E2BIG); get_random_bytes(&next_stag_index, sizeof(next_stag_index)); stag_key = (u8)next_stag_index; 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, NES_RESOURCE_FAST_MR); if (err) return ERR_PTR(err); nesmr = kzalloc(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, "Allocating STag 0x%08X index = 0x%08X\n", stag, stag_index); ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg); if (ret == 0) { nesmr->ibmr.rkey = stag; nesmr->ibmr.lkey = stag; nesmr->mode = IWNES_MEMREG_TYPE_FMEM; ibmr = &nesmr->ibmr; } else { kfree(nesmr); nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); return ERR_PTR(-ENOMEM); } nesmr->pages = pci_alloc_consistent(nesdev->pcidev, max_num_sg * sizeof(u64), &nesmr->paddr); if (!nesmr->paddr) goto err; nesmr->max_pages = max_num_sg; return ibmr; err: nes_dereg_mr(ibmr); return ERR_PTR(-ENOMEM); } static int nes_set_page(struct ib_mr *ibmr, u64 addr) { struct nes_mr *nesmr = to_nesmr(ibmr); if (unlikely(nesmr->npages == nesmr->max_pages)) return -ENOMEM; nesmr->pages[nesmr->npages++] = cpu_to_le64(addr); return 0; } static int nes_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, unsigned int *sg_offset) { struct nes_mr *nesmr = to_nesmr(ibmr); nesmr->npages = 0; return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, nes_set_page); } /** * nes_query_device */ static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *uhw) { struct nes_vnic *nesvnic = to_nesvnic(ibdev); struct nes_device *nesdev = nesvnic->nesdev; struct nes_ib_device *nesibdev = nesvnic->nesibdev; if (uhw->inlen || uhw->outlen) return -EINVAL; memset(props, 0, sizeof(*props)); memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6); props->fw_ver = nesdev->nesadapter->firmware_version; 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_send_sge = nesdev->nesadapter->max_sge; props->max_recv_sge = nesdev->nesadapter->max_sge; props->max_cq = nesibdev->max_cq; props->max_cqe = nesdev->nesadapter->max_cqe; 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 = 2; break; case 1: props->max_qp_rd_atom = 8; break; case 2: props->max_qp_rd_atom = 32; break; case 3: props->max_qp_rd_atom = 64; break; default: props->max_qp_rd_atom = 0; } props->max_qp_init_rd_atom = props->max_qp_rd_atom; 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) { struct nes_vnic *nesvnic = to_nesvnic(ibdev); struct net_device *netdev = nesvnic->netdev; /* props being zeroed by the caller, avoid zeroing it here */ props->max_mtu = IB_MTU_4096; props->active_mtu = ib_mtu_int_to_enum(netdev->mtu); props->lid = 1; if (netif_queue_stopped(netdev)) props->state = IB_PORT_DOWN; else if (nesvnic->linkup) props->state = IB_PORT_ACTIVE; else props->state = IB_PORT_DOWN; 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->active_width = IB_WIDTH_4X; props->active_speed = IB_SPEED_SDR; props->max_msg_sz = 0x80000000; 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_adapter *nesadapter = nesdev->nesadapter; struct nes_alloc_ucontext_req req; struct nes_alloc_ucontext_resp uresp; struct nes_ucontext *nes_ucontext; struct nes_ib_device *nesibdev = nesvnic->nesibdev; if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) { printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n"); return ERR_PTR(-EINVAL); } if (req.userspace_ver != NES_ABI_USERSPACE_VER) { printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n", req.userspace_ver, NES_ABI_USERSPACE_VER); return ERR_PTR(-EINVAL); } 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; uresp.virtwq = nesadapter->virtwq; uresp.kernel_ver = NES_ABI_KERNEL_VER; nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL); if (!nes_ucontext) return ERR_PTR(-ENOMEM); nes_ucontext->nesdev = nesdev; nes_ucontext->mmap_wq_offset = uresp.max_pds; 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); INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list); atomic_set(&nes_ucontext->usecnt, 1); 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); if (!atomic_dec_and_test(&nes_ucontext->usecnt)) return 0; 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 (nesqp == NULL) { 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, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n", nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context, netdev_refcnt_read(nesvnic->netdev)); err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds, nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD); if (err) { return ERR_PTR(err); } nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL); if (!nespd) { nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); return ERR_PTR(-ENOMEM); } nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n", nespd, dev_name(&nesvnic->nesibdev->ibdev.dev)); nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + 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)>>(PAGE_SHIFT-12)); kfree(nespd); return 0; } /** * nes_get_encoded_size */ static inline u8 nes_get_encoded_size(int *size) { u8 encoded_size = 0; if (*size <= 32) { *size = 32; encoded_size = 1; } else if (*size <= 128) { *size = 128; encoded_size = 2; } else if (*size <= 512) { *size = 512; encoded_size = 3; } return (encoded_size); } /** * nes_setup_virt_qp */ static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl, struct nes_vnic *nesvnic, int sq_size, int rq_size) { unsigned long flags; void *mem; __le64 *pbl = NULL; __le64 *tpbl; __le64 *pblbuffer; struct nes_device *nesdev = nesvnic->nesdev; struct nes_adapter *nesadapter = nesdev->nesadapter; u32 pbl_entries; u8 rq_pbl_entries; u8 sq_pbl_entries; pbl_entries = nespbl->pbl_size >> 3; nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n", nespbl->pbl_size, pbl_entries, (void *)nespbl->pbl_vbase, (unsigned long) nespbl->pbl_pbase); pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */ /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */ /* the first pbl to be fro the rq_vbase... */ rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12; sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12; nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32); if (!nespbl->page) { nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n"); kfree(nespbl); return -ENOMEM; } nesqp->hwqp.sq_vbase = kmap(nespbl->page); nesqp->page = nespbl->page; if (!nesqp->hwqp.sq_vbase) { nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n"); kfree(nespbl); return -ENOMEM; } /* Now to get to sq.. we need to calculate how many */ /* PBL entries were used by the rq.. */ pbl += sq_pbl_entries; nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32); /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */ /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */ nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n", nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase, nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase); spin_lock_irqsave(&nesadapter->pbl_lock, flags); if (!nesadapter->free_256pbl) { pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); kunmap(nesqp->page); kfree(nespbl); return -ENOMEM; } nesadapter->free_256pbl--; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase); pblbuffer = nesqp->pbl_vbase; if (!nesqp->pbl_vbase) { /* memory allocated during nes_reg_user_mr() */ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); spin_lock_irqsave(&nesadapter->pbl_lock, flags); nesadapter->free_256pbl++; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); kunmap(nesqp->page); return -ENOMEM; } memset(nesqp->pbl_vbase, 0, 256); /* fill in the page address in the pbl buffer.. */ tpbl = pblbuffer + 16; pbl = (__le64 *)nespbl->pbl_vbase; while (sq_pbl_entries--) *tpbl++ = *pbl++; tpbl = pblbuffer; while (rq_pbl_entries--) *tpbl++ = *pbl++; /* done with memory allocated during nes_reg_user_mr() */ pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); nesqp->qp_mem_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.q2_pbase); if (!mem) { pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase); nesqp->pbl_vbase = NULL; spin_lock_irqsave(&nesadapter->pbl_lock, flags); nesadapter->free_256pbl++; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); kunmap(nesqp->page); return -ENOMEM; } nesqp->sq_kmapped = 1; nesqp->hwqp.q2_vbase = mem; mem += 256; memset(nesqp->hwqp.q2_vbase, 0, 256); nesqp->nesqp_context = mem; memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context)); nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256; return 0; } /** * nes_setup_mmap_qp */ static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic, int sq_size, int rq_size) { void *mem; struct nes_device *nesdev = nesvnic->nesdev; 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) return -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; mem += sizeof(struct nes_hw_qp_wqe) * sq_size; nesqp->hwqp.rq_vbase = mem; 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)); return 0; } /** * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory. */ static void nes_free_qp_mem(struct nes_device *nesdev, struct nes_qp *nesqp, int virt_wqs) { unsigned long flags; struct nes_adapter *nesadapter = nesdev->nesadapter; if (!virt_wqs) { pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); }else { spin_lock_irqsave(&nesadapter->pbl_lock, flags); nesadapter->free_256pbl++; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase); pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase ); nesqp->pbl_vbase = NULL; if (nesqp->sq_kmapped) { nesqp->sq_kmapped = 0; kunmap(nesqp->page); } } } /** * 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_req req; struct nes_create_qp_resp uresp; struct nes_pbl *nespbl = NULL; u32 qp_num = 0; u32 opcode = 0; /* u32 counter = 0; */ void *mem; unsigned long flags; int ret; int err; int virt_wqs = 0; int sq_size; int rq_size; u8 sq_encoded_size; u8 rq_encoded_size; /* int counter; */ if (init_attr->create_flags) return ERR_PTR(-EINVAL); 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; } sq_size = init_attr->cap.max_send_wr; rq_size = init_attr->cap.max_recv_wr; /* check if the encoded sizes are OK or not... */ sq_encoded_size = nes_get_encoded_size(&sq_size); rq_encoded_size = nes_get_encoded_size(&rq_size); if ((!sq_encoded_size) || (!rq_encoded_size)) { nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n", rq_size, sq_size); return ERR_PTR(-EINVAL); } init_attr->cap.max_send_wr = sq_size -2; 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, NES_RESOURCE_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); return ERR_PTR(-ENOMEM); } u64nesqp = (unsigned long)mem; u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1; u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1; u64nesqp &= ~u64temp; nesqp = (struct nes_qp *)(unsigned long)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 (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) { nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); kfree(nesqp->allocated_buffer); nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n"); return ERR_PTR(-EFAULT); } if (req.user_wqe_buffers) { virt_wqs = 1; } if (req.user_qp_buffer) nesqp->nesuqp_addr = req.user_qp_buffer; if (udata && (ibpd->uobject->context)) { nesqp->user_mode = 1; nes_ucontext = to_nesucontext(ibpd->uobject->context); if (virt_wqs) { err = 1; list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) { if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) { list_del(&nespbl->list); err = 0; nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n", nespbl, nespbl->user_base); break; } } if (err) { nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n", (long long unsigned int)req.user_wqe_buffers); nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); kfree(nesqp->allocated_buffer); return ERR_PTR(-EFAULT); } } 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); if (virt_wqs) { pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); } 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); } } err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) : nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size); if (err) { nes_debug(NES_DBG_QP, "error geting qp mem code = %d\n", err); nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); kfree(nesqp->allocated_buffer); return ERR_PTR(-ENOMEM); } nesqp->hwqp.sq_size = sq_size; nesqp->hwqp.sq_encoded_size = sq_encoded_size; nesqp->hwqp.sq_head = 1; nesqp->hwqp.rq_size = rq_size; nesqp->hwqp.rq_encoded_size = rq_encoded_size; /* 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); if (!udata) { 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)); if (!virt_wqs) { 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)); } else { u64temp = (u64)nesqp->pbl_pbase; nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp); nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); } /* 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]); */ spin_lock_irqsave(&nesdev->cqp.lock, flags); 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)((unsigned long)(nesqp))); nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp)))); nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM | NES_QPCONTEXT_ORDIRD_AAH | ((((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); if (cqp_request == NULL) { nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n"); nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); nes_free_qp_mem(nesdev, nesqp,virt_wqs); kfree(nesqp->allocated_buffer); return ERR_PTR(-ENOMEM); } cqp_request->waiting = 1; cqp_wqe = &cqp_request->cqp_wqe; if (!virt_wqs) { opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_IWARP_STATE_IDLE; } else { opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS | NES_CQP_QP_IWARP_STATE_IDLE; } opcode |= NES_CQP_QP_CQS_VALID; nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); u64temp = (u64)nesqp->nesqp_context_pbase; set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp); atomic_set(&cqp_request->refcount, 2); nes_post_cqp_request(nesdev, cqp_request); /* 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, (cqp_request->request_done != 0), 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)) { nes_put_cqp_request(nesdev, cqp_request); nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); nes_free_qp_mem(nesdev, nesqp,virt_wqs); kfree(nesqp->allocated_buffer); if (!ret) { return ERR_PTR(-ETIME); } else { return ERR_PTR(-EIO); } } nes_put_cqp_request(nesdev, cqp_request); if (udata) { uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index; uresp.mmap_rq_db_index = 0; 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)) { nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); nes_free_qp_mem(nesdev, nesqp,virt_wqs); 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); 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); } init_completion(&nesqp->sq_drained); init_completion(&nesqp->rq_drained); nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR); timer_setup(&nesqp->terminate_timer, nes_terminate_timeout, 0); /* 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", netdev_refcnt_read(nesvnic->netdev)); return &nesqp->ibqp; } /** * nes_clean_cq */ static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq) { u32 cq_head; u32 lo; u32 hi; u64 u64temp; unsigned long flags = 0; spin_lock_irqsave(&nescq->lock, flags); cq_head = nescq->hw_cq.cq_head; while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) { rmb(); lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]); u64temp = (((u64)hi) << 32) | ((u64)lo); u64temp &= ~(NES_SW_CONTEXT_ALIGN-1); if (u64temp == (u64)(unsigned long)nesqp) { /* Zero the context value so cqe will be ignored */ nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0; nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0; } if (++cq_head >= nescq->hw_cq.cq_size) cq_head = 0; } spin_unlock_irqrestore(&nescq->lock, flags); } /** * nes_destroy_qp */ static int nes_destroy_qp(struct ib_qp *ibqp) { struct nes_qp *nesqp = to_nesqp(ibqp); struct nes_ucontext *nes_ucontext; struct ib_qp_attr attr; struct iw_cm_id *cm_id; struct iw_cm_event cm_event; int ret = 0; 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 = -ETIMEDOUT; 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; } } if (nesqp->pbl_pbase && nesqp->sq_kmapped) { nesqp->sq_kmapped = 0; kunmap(nesqp->page); } } else { /* Clean any pending completions from the cq(s) */ if (nesqp->nesscq) nes_clean_cq(nesqp, nesqp->nesscq); if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq)) nes_clean_cq(nesqp, nesqp->nesrcq); } nes_rem_ref(&nesqp->ibqp); return 0; } /** * nes_create_cq */ static struct ib_cq *nes_create_cq(struct ib_device *ibdev, const struct ib_cq_init_attr *attr, struct ib_ucontext *context, struct ib_udata *udata) { int entries = attr->cqe; 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 opcode = 0; u32 pbl_entries = 1; int err; unsigned long flags; int ret; if (attr->flags) return ERR_PTR(-EINVAL); if (entries > nesadapter->max_cqe) return ERR_PTR(-EINVAL); err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs, nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ); if (err) { return ERR_PTR(err); } nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL); if (!nescq) { nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); return ERR_PTR(-ENOMEM); } 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); } nesvnic->mcrq_ucontext = nes_ucontext; nes_ucontext->mcrqf = req.mcrqf; if (nes_ucontext->mcrqf) { if (nes_ucontext->mcrqf & 0x80000000) nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1); else if (nes_ucontext->mcrqf & 0x40000000) nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff; else nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1; nescq->mcrqf = nes_ucontext->mcrqf; nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); } nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n", (unsigned long)req.user_cq_buffer, entries); err = 1; 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(-EFAULT); } 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_zalloc_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); } 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); if (cqp_request == NULL) { 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); else { pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); } 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; opcode = 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(&nesadapter->pbl_lock, flags); if (pbl_entries != 1) { if (pbl_entries > 32) { /* use 4k pbl */ nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries); if (nesadapter->free_4kpbl == 0) { spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nes_free_cqp_request(nesdev, cqp_request); if (!context) pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, nescq->hw_cq.cq_pbase); else { pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); } nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); kfree(nescq); return ERR_PTR(-ENOMEM); } else { opcode |= (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 (nesadapter->free_256pbl == 0) { spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nes_free_cqp_request(nesdev, cqp_request); if (!context) pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, nescq->hw_cq.cq_pbase); else { pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); } nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); kfree(nescq); return ERR_PTR(-ENOMEM); } else { opcode |= NES_CQP_CQ_VIRT; nescq->virtual_cq = 1; nesadapter->free_256pbl--; } } } spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16))); if (context) { if (pbl_entries != 1) u64temp = (u64)nespbl->pbl_pbase; else u64temp = le64_to_cpu(nespbl->pbl_vbase[0]); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX, 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; } set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp); cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0; u64temp = (u64)(unsigned long)&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); /* 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)) { nes_put_cqp_request(nesdev, cqp_request); if (!context) pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, nescq->hw_cq.cq_pbase); else { pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, nespbl->pbl_pbase); kfree(nespbl); } nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); kfree(nescq); return ERR_PTR(-EIO); } nes_put_cqp_request(nesdev, cqp_request); 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 - sizeof resp.reserved)) { 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; u32 opcode = 0; 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); if (cqp_request == NULL) { nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); return -ENOMEM; } cqp_request->waiting = 1; cqp_wqe = &cqp_request->cqp_wqe; opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16); spin_lock_irqsave(&nesadapter->pbl_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", __func__, 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", __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl); } opcode |= NES_CQP_CQ_4KB_CHUNK; } spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16))); if (!nescq->mcrqf) nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number); atomic_set(&cqp_request->refcount, 2); nes_post_cqp_request(nesdev, cqp_request); /* Wait for CQP */ nes_debug(NES_DBG_CQ, "Waiting for destroy 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); 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) { nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n", nescq->hw_cq.cq_number); ret = -ETIME; } else if (cqp_request->major_code) { nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n", nescq->hw_cq.cq_number); ret = -EIO; } else { ret = 0; } nes_put_cqp_request(nesdev, cqp_request); if (nescq->cq_mem_size) pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase); kfree(nescq); return ret; } /** * root_256 */ static u32 root_256(struct nes_device *nesdev, struct nes_root_vpbl *root_vpbl, struct nes_root_vpbl *new_root, u16 pbl_count_4k) { u64 leaf_pbl; int i, j, k; if (pbl_count_4k == 1) { new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 512, &new_root->pbl_pbase); if (new_root->pbl_vbase == NULL) return 0; leaf_pbl = (u64)root_vpbl->pbl_pbase; for (i = 0; i < 16; i++) { new_root->pbl_vbase[i].pa_low = cpu_to_le32((u32)leaf_pbl); new_root->pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)leaf_pbl) >> 32))); leaf_pbl += 256; } } else { for (i = 3; i >= 0; i--) { j = i * 16; root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i]; leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) + (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high)) << 32); for (k = 1; k < 16; k++) { leaf_pbl += 256; root_vpbl->pbl_vbase[j + k].pa_low = cpu_to_le32((u32)leaf_pbl); root_vpbl->pbl_vbase[j + k].pa_high = cpu_to_le32((u32)((((u64)leaf_pbl) >> 32))); } } } return 1; } /** * 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_4k, u16 residual_page_count_4k, int acc, u64 *iova_start, u16 *actual_pbl_cnt, u8 *used_4k_pbls) { struct nes_hw_cqp_wqe *cqp_wqe; struct nes_cqp_request *cqp_request; unsigned long flags; int ret; struct nes_adapter *nesadapter = nesdev->nesadapter; uint pg_cnt = 0; u16 pbl_count_256 = 0; u16 pbl_count = 0; u8 use_256_pbls = 0; u8 use_4k_pbls = 0; u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0; struct nes_root_vpbl new_root = { 0, NULL, NULL }; u32 opcode = 0; u16 major_code; /* Register the region with the adapter */ cqp_request = nes_get_cqp_request(nesdev); if (cqp_request == NULL) { nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); return -ENOMEM; } cqp_request->waiting = 1; cqp_wqe = &cqp_request->cqp_wqe; if (pbl_count_4k) { spin_lock_irqsave(&nesadapter->pbl_lock, flags); pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k; pbl_count_256 = (pg_cnt + 31) / 32; if (pg_cnt <= 32) { if (pbl_count_256 <= nesadapter->free_256pbl) use_256_pbls = 1; else if (pbl_count_4k <= nesadapter->free_4kpbl) use_4k_pbls = 1; } else if (pg_cnt <= 2048) { if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) && (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) { use_4k_pbls = 1; } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) { use_256_pbls = 1; use_two_level = 1; } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) { use_4k_pbls = 1; } } else { if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl) use_4k_pbls = 1; } if (use_256_pbls) { pbl_count = pbl_count_256; nesadapter->free_256pbl -= pbl_count + use_two_level; } else if (use_4k_pbls) { pbl_count = pbl_count_4k; nesadapter->free_4kpbl -= pbl_count + use_two_level; } else { spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); nes_debug(NES_DBG_MR, "Out of Pbls\n"); nes_free_cqp_request(nesdev, cqp_request); return -ENOMEM; } spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); } if (use_256_pbls && use_two_level) { if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) { if (new_root.pbl_pbase != 0) root_vpbl = &new_root; } else { spin_lock_irqsave(&nesadapter->pbl_lock, flags); nesadapter->free_256pbl += pbl_count_256 + use_two_level; use_256_pbls = 0; if (pbl_count_4k == 1) use_two_level = 0; pbl_count = pbl_count_4k; if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) { nesadapter->free_4kpbl -= pbl_count + use_two_level; use_4k_pbls = 1; } spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); if (use_4k_pbls == 0) return -ENOMEM; } } opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR; if (acc & IB_ACCESS_LOCAL_WRITE) opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE; if (acc & IB_ACCESS_REMOTE_WRITE) opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN; if (acc & IB_ACCESS_REMOTE_READ) opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN; if (acc & IB_ACCESS_MW_BIND) opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN; nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 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); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); if (pbl_count == 0) { set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer); } else { set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8)); if (use_4k_pbls) 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); /* 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; nes_put_cqp_request(nesdev, cqp_request); if ((!ret || major_code) && pbl_count != 0) { spin_lock_irqsave(&nesadapter->pbl_lock, flags); if (use_256_pbls) nesadapter->free_256pbl += pbl_count + use_two_level; else if (use_4k_pbls) nesadapter->free_4kpbl += pbl_count + use_two_level; spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); } if (new_root.pbl_pbase) pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase, new_root.pbl_pbase); if (!ret) return -ETIME; else if (major_code) return -EIO; *actual_pbl_cnt = pbl_count + use_two_level; *used_4k_pbls = use_4k_pbls; return 0; } /** * nes_reg_phys_mr */ struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size, 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; unsigned long mask; u32 stag_index = 0; u32 next_stag_index = 0; u32 driver_key = 0; int err = 0; int ret = 0; u16 pbl_count = 0; u8 single_page = 1; u8 stag_key = 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 ((addr ^ *iova_start) & ~PAGE_MASK) return ERR_PTR(-EINVAL); err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR); if (err) { return ERR_PTR(err); } nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); if (!nesmr) { nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); return ERR_PTR(-ENOMEM); } /* 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; } mask = !size; if (mask & ~PAGE_MASK) { nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n"); ibmr = ERR_PTR(-EINVAL); kfree(nesmr); goto reg_phys_err; } region_length += size; vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK); vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)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); /* Make the leaf PBL the root if only one PBL */ root_vpbl.pbl_pbase = vpbl.pbl_pbase; if (single_page) { pbl_count = 0; } else { pbl_count = 1; } ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl, addr, pbl_count, 1, acc, iova_start, &nesmr->pbls_used, &nesmr->pbl_4k); if (ret == 0) { nesmr->ibmr.rkey = stag; nesmr->ibmr.lkey = stag; nesmr->mode = IWNES_MEMREG_TYPE_MEM; ibmr = &nesmr->ibmr; } else { kfree(nesmr); ibmr = ERR_PTR(-ENOMEM); } reg_phys_err: /* single PBL case */ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase); return ibmr; } /** * nes_get_dma_mr */ static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc) { u64 kva = 0; nes_debug(NES_DBG_MR, "\n"); return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva); } /** * nes_reg_user_mr */ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u64 virt, int acc, struct ib_udata *udata) { u64 iova_start; __le64 *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 = ERR_PTR(-EINVAL); struct scatterlist *sg; struct nes_ucontext *nes_ucontext; struct nes_pbl *nespbl; struct nes_mr *nesmr; struct ib_umem *region; struct nes_mem_reg_req req; struct nes_vpbl vpbl; struct nes_root_vpbl root_vpbl; int entry, page_index; int page_count = 0; int err, pbl_depth = 0; int chunk_pages; 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; u32 skip_pages; u16 pbl_count; u8 single_page = 1; u8 stag_key; int first_page = 1; region = ib_umem_get(pd->uobject->context, start, length, acc, 0); if (IS_ERR(region)) { return (struct ib_mr *)region; } nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u," " offset = %u, page size = %lu.\n", (unsigned long int)start, (unsigned long int)virt, (u32)length, ib_umem_offset(region), BIT(region->page_shift)); skip_pages = ((u32)ib_umem_offset(region)) >> 12; if (ib_copy_from_udata(&req, udata, sizeof(req))) { ib_umem_release(region); 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 = next_stag_index & 0x70000000; 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, NES_RESOURCE_USER_MR); if (err) { ib_umem_release(region); return ERR_PTR(err); } nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); if (!nesmr) { ib_umem_release(region); nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); return ERR_PTR(-ENOMEM); } nesmr->region = region; for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) { if (sg_dma_address(sg) & ~PAGE_MASK) { ib_umem_release(region); 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(sg)); ibmr = ERR_PTR(-EINVAL); kfree(nesmr); goto reg_user_mr_err; } if (!sg_dma_len(sg)) { ib_umem_release(region); 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(sg); chunk_pages = sg_dma_len(sg) >> 12; region_length -= skip_pages << 12; for (page_index = skip_pages; page_index < chunk_pages; page_index++) { skip_pages = 0; if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length) goto enough_pages; if ((page_count&0x01FF) == 0) { if (page_count >= 1024 * 512) { ib_umem_release(region); nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); kfree(nesmr); ibmr = ERR_PTR(-E2BIG); goto reg_user_mr_err; } if (root_pbl_index == 1) { 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) { ib_umem_release(region); pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase); nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); kfree(nesmr); ibmr = ERR_PTR(-ENOMEM); goto reg_user_mr_err; } root_vpbl.leaf_vpbl = kcalloc(1024, sizeof(*root_vpbl.leaf_vpbl), GFP_KERNEL); if (!root_vpbl.leaf_vpbl) { ib_umem_release(region); 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); ibmr = ERR_PTR(-ENOMEM); goto reg_user_mr_err; } 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) { ib_umem_release(region); 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 (single_page) { if (page_count != 0) { if ((last_dma_addr+4096) != (sg_dma_address(sg)+ (page_index*4096))) single_page = 0; last_dma_addr = sg_dma_address(sg)+ (page_index*4096); } else { first_dma_addr = sg_dma_address(sg)+ (page_index*4096); last_dma_addr = first_dma_addr; } } vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)(sg_dma_address(sg)+ (page_index*4096))); vpbl.pbl_vbase[cur_pbl_index].pa_high = cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+ (page_index*4096))) >> 32))); cur_pbl_index++; page_count++; } } enough_pages: 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; iova_start = virt; /* 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; } nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X," " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n", stag, (unsigned int)iova_start, (unsigned int)region_length, stag_index, (unsigned long long)region->length, pbl_count); ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl, first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k); 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; } else { ib_umem_release(region); 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 (page_index=0; page_index<root_pbl_index; page_index++) { pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[page_index].pbl_vbase, root_vpbl.leaf_vpbl[page_index].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; case IWNES_MEMREG_TYPE_QP: case IWNES_MEMREG_TYPE_CQ: if (!region->length) { nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n"); ib_umem_release(region); return ERR_PTR(-EINVAL); } nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL); if (!nespbl) { ib_umem_release(region); return ERR_PTR(-ENOMEM); } nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); if (!nesmr) { ib_umem_release(region); kfree(nespbl); return ERR_PTR(-ENOMEM); } nesmr->region = region; nes_ucontext = to_nesucontext(pd->uobject->context); pbl_depth = region->length >> 12; pbl_depth += (region->length & (4096-1)) ? 1 : 0; nespbl->pbl_size = pbl_depth*sizeof(u64); if (req.reg_type == IWNES_MEMREG_TYPE_QP) { nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory"); } else { nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory"); } nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n", nespbl->pbl_size, pbl_depth); pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size, &nespbl->pbl_pbase); if (!pbl) { ib_umem_release(region); kfree(nesmr); kfree(nespbl); nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n"); return ERR_PTR(-ENOMEM); } nespbl->pbl_vbase = (u64 *)pbl; nespbl->user_base = start; nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx," " pbl_vbase=%p user_base=0x%lx\n", nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase, (void *) nespbl->pbl_vbase, nespbl->user_base); for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) { chunk_pages = sg_dma_len(sg) >> 12; chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0; if (first_page) { nespbl->page = sg_page(sg); first_page = 0; } for (page_index = 0; page_index < chunk_pages; page_index++) { ((__le32 *)pbl)[0] = cpu_to_le32((u32) (sg_dma_address(sg)+ (page_index*4096))); ((__le32 *)pbl)[1] = cpu_to_le32(((u64) (sg_dma_address(sg)+ (page_index*4096)))>>32); nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl, (unsigned long long)*pbl, le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0])); pbl++; } } if (req.reg_type == IWNES_MEMREG_TYPE_QP) { list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list); } else { list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list); } nesmr->ibmr.rkey = -1; nesmr->ibmr.lkey = -1; nesmr->mode = req.reg_type; return &nesmr->ibmr; } ib_umem_release(region); 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; if (nesmr->pages) pci_free_consistent(nesdev->pcidev, nesmr->max_pages * sizeof(u64), nesmr->pages, nesmr->paddr); if (nesmr->region) { ib_umem_release(nesmr->region); } if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) { kfree(nesmr); return 0; } /* Deallocate the region with the adapter */ cqp_request = nes_get_cqp_request(nesdev); if (cqp_request == NULL) { nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); return -ENOMEM; } cqp_request->waiting = 1; cqp_wqe = &cqp_request->cqp_wqe; nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey); atomic_set(&cqp_request->refcount, 2); nes_post_cqp_request(nesdev, cqp_request); /* Wait for CQP */ nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey); ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 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); major_code = cqp_request->major_code; minor_code = cqp_request->minor_code; nes_put_cqp_request(nesdev, cqp_request); 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; } if (nesmr->pbls_used != 0) { spin_lock_irqsave(&nesadapter->pbl_lock, flags); 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); } spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); } nes_free_resource(nesadapter, nesadapter->allocated_mrs, (ib_mr->rkey & 0x0fffff00) >> 8); kfree(nesmr); return 0; } /** * show_rev */ static ssize_t hw_rev_show(struct device *dev, struct device_attribute *attr, char *buf) { struct nes_ib_device *nesibdev = container_of(dev, struct nes_ib_device, ibdev.dev); struct nes_vnic *nesvnic = nesibdev->nesvnic; nes_debug(NES_DBG_INIT, "\n"); return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev); } static DEVICE_ATTR_RO(hw_rev); /** * show_hca */ static ssize_t hca_type_show(struct device *dev, struct device_attribute *attr, char *buf) { nes_debug(NES_DBG_INIT, "\n"); return sprintf(buf, "NES020\n"); } static DEVICE_ATTR_RO(hca_type); /** * show_board */ static ssize_t board_id_show(struct device *dev, struct device_attribute *attr, char *buf) { nes_debug(NES_DBG_INIT, "\n"); return sprintf(buf, "%.*s\n", 32, "NES020 Board ID"); } static DEVICE_ATTR_RO(board_id); static struct attribute *nes_dev_attributes[] = { &dev_attr_hw_rev.attr, &dev_attr_hca_type.attr, &dev_attr_board_id.attr, NULL }; static const struct attribute_group nes_attr_group = { .attrs = nes_dev_attributes, }; /** * 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) attr->cap.max_inline_data = 0; else 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; 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 termlen, u32 wait_completion) { 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; 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); if (cqp_request == NULL) { 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; set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, 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])); nes_fill_init_cqp_wqe(cqp_wqe, nesdev); set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase); /* If sending a terminate message, fill in the length (in words) */ if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) && !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) { termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT; set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen); } atomic_set(&cqp_request->refcount, 2); nes_post_cqp_request(nesdev, cqp_request); /* 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, (cqp_request->request_done != 0), 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); } nes_put_cqp_request(nesdev, cqp_request); 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 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)); 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); 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); 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); 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); 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); 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); 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; } switch (nesqp->hw_iwarp_state) { case NES_AEQE_IWARP_STATE_CLOSING: next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; break; 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->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); 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; 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); return -EINVAL; } nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n", nesqp->hwqp.qp_id); if (nesqp->term_flags) del_timer(&nesqp->terminate_timer); 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) && (nesdev->iw_status) && (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) { next_iwarp_state |= NES_CQP_QP_RESET; } 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); return -EINVAL; break; } nesqp->ibqp_state = attr->qp_state; 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, 0, 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) { 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 */ 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)); } } 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) { 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); } } 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); } err = 0; nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n", nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); return err; } static inline void fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, const struct ib_send_wr *ib_wr, u32 uselkey) { int sge_index; int total_payload_length = 0; for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) { set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4), ib_wr->sg_list[sge_index].addr); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4), ib_wr->sg_list[sge_index].length); if (uselkey) set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), (ib_wr->sg_list[sge_index].lkey)); else set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0); total_payload_length += ib_wr->sg_list[sge_index].length; } nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n", total_payload_length); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, total_payload_length); } /** * nes_post_send */ static int nes_post_send(struct ib_qp *ibqp, const struct ib_send_wr *ib_wr, const 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 = 0; u32 qsize = nesqp->hwqp.sq_size; u32 head; u32 wqe_misc = 0; u32 wqe_count = 0; u32 counter; if (nesqp->ibqp_state > IB_QPS_RTS) { err = -EINVAL; goto out; } spin_lock_irqsave(&nesqp->lock, flags); head = nesqp->hwqp.sq_head; while (ib_wr) { /* Check for QP error */ if (nesqp->term_flags) { err = -EINVAL; break; } /* Check for SQ overflow */ if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { err = -ENOMEM; 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); */ nes_fill_init_qp_wqe(wqe, nesqp, head); u64temp = (u64)(ib_wr->wr_id); set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp); switch (ib_wr->opcode) { case IB_WR_SEND: case IB_WR_SEND_WITH_INV: if (IB_WR_SEND == ib_wr->opcode) { if (ib_wr->send_flags & IB_SEND_SOLICITED) wqe_misc = NES_IWARP_SQ_OP_SENDSE; else wqe_misc = NES_IWARP_SQ_OP_SEND; } else { if (ib_wr->send_flags & IB_SEND_SOLICITED) wqe_misc = NES_IWARP_SQ_OP_SENDSEINV; else wqe_misc = NES_IWARP_SQ_OP_SENDINV; set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX, ib_wr->ex.invalidate_rkey); } 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) && ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) && (ib_wr->sg_list[0].length <= 64)) { memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, ib_wr->sg_list[0].length); wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; } else { fill_wqe_sg_send(wqe, ib_wr, 1); } 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; set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX, rdma_wr(ib_wr)->rkey); set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX, rdma_wr(ib_wr)->remote_addr); if ((ib_wr->send_flags & IB_SEND_INLINE) && ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) && (ib_wr->sg_list[0].length <= 64)) { memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, ib_wr->sg_list[0].length); wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; } else { fill_wqe_sg_send(wqe, ib_wr, 1); } 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: case IB_WR_RDMA_READ_WITH_INV: /* 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; } if (ib_wr->opcode == IB_WR_RDMA_READ) { wqe_misc = NES_IWARP_SQ_OP_RDMAR; } else { wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV; set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX, ib_wr->ex.invalidate_rkey); } set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX, rdma_wr(ib_wr)->remote_addr); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX, rdma_wr(ib_wr)->rkey); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX, ib_wr->sg_list->length); set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, ib_wr->sg_list->addr); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX, ib_wr->sg_list->lkey); break; case IB_WR_LOCAL_INV: wqe_misc = NES_IWARP_SQ_OP_LOCINV; set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX, ib_wr->ex.invalidate_rkey); break; case IB_WR_REG_MR: { struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr); int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size); int flags = reg_wr(ib_wr)->access; if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) { nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n"); err = -EINVAL; break; } wqe_misc = NES_IWARP_SQ_OP_FAST_REG; set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX, mr->ibmr.iova); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX, lower_32_bits(mr->ibmr.length)); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX, reg_wr(ib_wr)->key); if (page_shift == 12) { wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K; } else if (page_shift == 21) { wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M; } else { nes_debug(NES_DBG_IW_TX, "Invalid page shift," " ib_wr=%u, max=1\n", ib_wr->num_sge); err = -EINVAL; break; } /* Set access_flags */ wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ; if (flags & IB_ACCESS_LOCAL_WRITE) wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE; if (flags & IB_ACCESS_REMOTE_WRITE) wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE; if (flags & IB_ACCESS_REMOTE_READ) wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ; if (flags & IB_ACCESS_MW_BIND) wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND; /* Fill in PBL info: */ set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX, mr->paddr); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX, mr->npages * 8); nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, " "length: %lld, rkey: %0x, pgl_paddr: %llx, " "page_list_len: %u, wqe_misc: %x\n", (unsigned long long) mr->ibmr.iova, mr->ibmr.length, reg_wr(ib_wr)->key, (unsigned long long) mr->paddr, mr->npages, wqe_misc); break; } default: /* error */ err = -EINVAL; break; } if (err) break; if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all) 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); out: if (err) *bad_wr = ib_wr; return err; } /** * nes_post_recv */ static int nes_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *ib_wr, const 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; if (nesqp->ibqp_state > IB_QPS_RTS) { err = -EINVAL; goto out; } spin_lock_irqsave(&nesqp->lock, flags); head = nesqp->hwqp.rq_head; while (ib_wr) { /* Check for QP error */ if (nesqp->term_flags) { err = -EINVAL; break; } 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 = -ENOMEM; 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); */ nes_fill_init_qp_wqe(wqe, nesqp, head); u64temp = (u64)(ib_wr->wr_id); set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp); total_payload_length = 0; for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) { set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4), ib_wr->sg_list[sge_index].addr); set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4), ib_wr->sg_list[sge_index].length); set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4), ib_wr->sg_list[sge_index].lkey); total_payload_length += ib_wr->sg_list[sge_index].length; } set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX, 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); out: if (err) *bad_wr = ib_wr; return err; } /** * nes_drain_sq - drain sq * @ibqp: pointer to ibqp */ static void nes_drain_sq(struct ib_qp *ibqp) { struct nes_qp *nesqp = to_nesqp(ibqp); if (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head) wait_for_completion(&nesqp->sq_drained); } /** * nes_drain_rq - drain rq * @ibqp: pointer to ibqp */ static void nes_drain_rq(struct ib_qp *ibqp) { struct nes_qp *nesqp = to_nesqp(ibqp); if (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head) wait_for_completion(&nesqp->rq_drained); } /** * nes_poll_cq */ static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) { u64 u64temp; u64 wrid; 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 = 0; u32 cq_size; u32 cqe_count = 0; u32 wqe_index; u32 u32temp; u32 move_cq_head = 1; u32 err_code; 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) == 0) break; /* * Make sure we read CQ entry contents *after* * we've checked the valid bit. */ rmb(); cqe = nescq->hw_cq.cq_vbase[head]; 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); if (u64temp) { nesqp = (struct nes_qp *)(unsigned long)u64temp; memset(entry, 0, sizeof *entry); if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) { entry->status = IB_WC_SUCCESS; } else { err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]); if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) { entry->status = err_code & 0x0000ffff; /* The rest of the cqe's will be marked as flushed */ nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] = cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) | NES_IWARP_CQE_MINOR_FLUSH); } 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; nesqp->hwqp.sq_tail++; } /* Working on a SQ Completion*/ wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index]. wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) | ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index]. wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX]))); entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]); switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 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[wqe_index]. 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; case NES_IWARP_SQ_OP_LOCINV: entry->opcode = IB_WC_LOCAL_INV; break; case NES_IWARP_SQ_OP_FAST_REG: entry->opcode = IB_WC_REG_MR; break; } nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1); if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) { move_cq_head = 0; wq_tail = nesqp->hwqp.sq_tail; } } else { /* Working on a RQ Completion*/ entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]); wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) | ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32); entry->opcode = IB_WC_RECV; nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1); if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) { move_cq_head = 0; wq_tail = nesqp->hwqp.rq_tail; } } if (nesqp->iwarp_state > NES_CQP_QP_IWARP_STATE_RTS) { if (nesqp->hwqp.sq_tail == nesqp->hwqp.sq_head) complete(&nesqp->sq_drained); if (nesqp->hwqp.rq_tail == nesqp->hwqp.rq_head) complete(&nesqp->rq_drained); } entry->wr_id = wrid; entry++; cqe_count++; } if (move_cq_head) { nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0; if (++head >= cq_size) head = 0; 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; } } else { /* Update the wqe index and set status to flush */ wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail; nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = cpu_to_le32(wqe_index); move_cq_head = 1; /* ready for next pass */ } } 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 */ static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) { 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; 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; else return -EINVAL; nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm); nes_read32(nesdev->regs+NES_CQE_ALLOC); return 0; } static int nes_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable) { struct ib_port_attr attr; int err; immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; err = nes_query_port(ibdev, port_num, &attr); if (err) return err; immutable->pkey_tbl_len = attr.pkey_tbl_len; immutable->gid_tbl_len = attr.gid_tbl_len; return 0; } static void get_dev_fw_str(struct ib_device *dev, char *str) { struct nes_ib_device *nesibdev = container_of(dev, struct nes_ib_device, ibdev); struct nes_vnic *nesvnic = nesibdev->nesvnic; nes_debug(NES_DBG_INIT, "\n"); snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u", (nesvnic->nesdev->nesadapter->firmware_version >> 16), (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff)); } static const struct ib_device_ops nes_dev_ops = { .alloc_mr = nes_alloc_mr, .alloc_mw = nes_alloc_mw, .alloc_pd = nes_alloc_pd, .alloc_ucontext = nes_alloc_ucontext, .create_cq = nes_create_cq, .create_qp = nes_create_qp, .dealloc_mw = nes_dealloc_mw, .dealloc_pd = nes_dealloc_pd, .dealloc_ucontext = nes_dealloc_ucontext, .dereg_mr = nes_dereg_mr, .destroy_cq = nes_destroy_cq, .destroy_qp = nes_destroy_qp, .drain_rq = nes_drain_rq, .drain_sq = nes_drain_sq, .get_dev_fw_str = get_dev_fw_str, .get_dma_mr = nes_get_dma_mr, .get_port_immutable = nes_port_immutable, .map_mr_sg = nes_map_mr_sg, .mmap = nes_mmap, .modify_qp = nes_modify_qp, .poll_cq = nes_poll_cq, .post_recv = nes_post_recv, .post_send = nes_post_send, .query_device = nes_query_device, .query_gid = nes_query_gid, .query_pkey = nes_query_pkey, .query_port = nes_query_port, .query_qp = nes_query_qp, .reg_user_mr = nes_reg_user_mr, .req_notify_cq = nes_req_notify_cq, }; /** * 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; } 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; nesibdev->ibdev.num_comp_vectors = 1; nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev; nesibdev->ibdev.iwcm = kzalloc(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; ib_set_device_ops(&nesibdev->ibdev, &nes_dev_ops); memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name, sizeof(nesibdev->ibdev.iwcm->ifname)); return nesibdev; } /** * nes_handle_delayed_event */ static void nes_handle_delayed_event(struct timer_list *t) { struct nes_vnic *nesvnic = from_timer(nesvnic, t, event_timer); if (nesvnic->delayed_event != nesvnic->last_dispatched_event) { struct ib_event event; event.device = &nesvnic->nesibdev->ibdev; if (!event.device) goto stop_timer; event.event = nesvnic->delayed_event; event.element.port_num = nesvnic->logical_port + 1; ib_dispatch_event(&event); } stop_timer: nesvnic->event_timer.function = NULL; } void nes_port_ibevent(struct nes_vnic *nesvnic) { struct nes_ib_device *nesibdev = nesvnic->nesibdev; struct nes_device *nesdev = nesvnic->nesdev; struct ib_event event; event.device = &nesibdev->ibdev; event.element.port_num = nesvnic->logical_port + 1; event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; if (!nesvnic->event_timer.function) { ib_dispatch_event(&event); nesvnic->last_dispatched_event = event.event; nesvnic->event_timer.function = nes_handle_delayed_event; nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY; add_timer(&nesvnic->event_timer); } else { mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY); } nesvnic->delayed_event = event.event; } /** * nes_destroy_ofa_device */ void nes_destroy_ofa_device(struct nes_ib_device *nesibdev) { if (nesibdev == NULL) return; nes_unregister_ofa_device(nesibdev); kfree(nesibdev->ibdev.iwcm); ib_dealloc_device(&nesibdev->ibdev); } /** * 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 ret; rdma_set_device_sysfs_group(&nesvnic->nesibdev->ibdev, &nes_attr_group); nesvnic->nesibdev->ibdev.driver_id = RDMA_DRIVER_NES; ret = ib_register_device(&nesvnic->nesibdev->ibdev, "nes%d", NULL); if (ret) { 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; nesvnic->of_device_registered = 1; return 0; } /** * nes_unregister_ofa_device */ static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev) { struct nes_vnic *nesvnic = nesibdev->nesvnic; if (nesvnic->of_device_registered) ib_unregister_device(&nesibdev->ibdev); nesvnic->of_device_registered = 0; }
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