/******************************************************************************* * * Copyright (c) 2015-2016 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 * OpenFabrics.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 #include #include #include #include #include #include #include #include "i40iw.h" #include "i40iw_register.h" #include #define CLIENT_IW_INTERFACE_VERSION_MAJOR 0 #define CLIENT_IW_INTERFACE_VERSION_MINOR 01 #define CLIENT_IW_INTERFACE_VERSION_BUILD 00 #define DRV_VERSION_MAJOR 0 #define DRV_VERSION_MINOR 5 #define DRV_VERSION_BUILD 123 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \ __stringify(DRV_VERSION_MINOR) "." __stringify(DRV_VERSION_BUILD) static int push_mode; module_param(push_mode, int, 0644); MODULE_PARM_DESC(push_mode, "Low latency mode: 0=disabled (default), 1=enabled)"); static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "debug flags: 0=disabled (default), 0x7fffffff=all"); static int resource_profile; module_param(resource_profile, int, 0644); MODULE_PARM_DESC(resource_profile, "Resource Profile: 0=no VF RDMA support (default), 1=Weighted VF, 2=Even Distribution"); static int max_rdma_vfs = 32; module_param(max_rdma_vfs, int, 0644); MODULE_PARM_DESC(max_rdma_vfs, "Maximum VF count: 0-32 32=default"); static int mpa_version = 2; module_param(mpa_version, int, 0644); MODULE_PARM_DESC(mpa_version, "MPA version to be used in MPA Req/Resp 1 or 2"); MODULE_AUTHOR("Intel Corporation, "); MODULE_DESCRIPTION("Intel(R) Ethernet Connection X722 iWARP RDMA Driver"); MODULE_LICENSE("Dual BSD/GPL"); static struct i40e_client i40iw_client; static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw"; static LIST_HEAD(i40iw_handlers); static spinlock_t i40iw_handler_lock; static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev, u32 vf_id, u8 *msg, u16 len); static struct notifier_block i40iw_inetaddr_notifier = { .notifier_call = i40iw_inetaddr_event }; static struct notifier_block i40iw_inetaddr6_notifier = { .notifier_call = i40iw_inet6addr_event }; static struct notifier_block i40iw_net_notifier = { .notifier_call = i40iw_net_event }; static struct notifier_block i40iw_netdevice_notifier = { .notifier_call = i40iw_netdevice_event }; /** * i40iw_find_i40e_handler - find a handler given a client info * @ldev: pointer to a client info */ static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev) { struct i40iw_handler *hdl; unsigned long flags; spin_lock_irqsave(&i40iw_handler_lock, flags); list_for_each_entry(hdl, &i40iw_handlers, list) { if (hdl->ldev.netdev == ldev->netdev) { spin_unlock_irqrestore(&i40iw_handler_lock, flags); return hdl; } } spin_unlock_irqrestore(&i40iw_handler_lock, flags); return NULL; } /** * i40iw_find_netdev - find a handler given a netdev * @netdev: pointer to net_device */ struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev) { struct i40iw_handler *hdl; unsigned long flags; spin_lock_irqsave(&i40iw_handler_lock, flags); list_for_each_entry(hdl, &i40iw_handlers, list) { if (hdl->ldev.netdev == netdev) { spin_unlock_irqrestore(&i40iw_handler_lock, flags); return hdl; } } spin_unlock_irqrestore(&i40iw_handler_lock, flags); return NULL; } /** * i40iw_add_handler - add a handler to the list * @hdl: handler to be added to the handler list */ static void i40iw_add_handler(struct i40iw_handler *hdl) { unsigned long flags; spin_lock_irqsave(&i40iw_handler_lock, flags); list_add(&hdl->list, &i40iw_handlers); spin_unlock_irqrestore(&i40iw_handler_lock, flags); } /** * i40iw_del_handler - delete a handler from the list * @hdl: handler to be deleted from the handler list */ static int i40iw_del_handler(struct i40iw_handler *hdl) { unsigned long flags; spin_lock_irqsave(&i40iw_handler_lock, flags); list_del(&hdl->list); spin_unlock_irqrestore(&i40iw_handler_lock, flags); return 0; } /** * i40iw_enable_intr - set up device interrupts * @dev: hardware control device structure * @msix_id: id of the interrupt to be enabled */ static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id) { u32 val; val = I40E_PFINT_DYN_CTLN_INTENA_MASK | I40E_PFINT_DYN_CTLN_CLEARPBA_MASK | (3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT); if (dev->is_pf) i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val); else i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val); } /** * i40iw_dpc - tasklet for aeq and ceq 0 * @data: iwarp device */ static void i40iw_dpc(unsigned long data) { struct i40iw_device *iwdev = (struct i40iw_device *)data; if (iwdev->msix_shared) i40iw_process_ceq(iwdev, iwdev->ceqlist); i40iw_process_aeq(iwdev); i40iw_enable_intr(&iwdev->sc_dev, iwdev->iw_msixtbl[0].idx); } /** * i40iw_ceq_dpc - dpc handler for CEQ * @data: data points to CEQ */ static void i40iw_ceq_dpc(unsigned long data) { struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data; struct i40iw_device *iwdev = iwceq->iwdev; i40iw_process_ceq(iwdev, iwceq); i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx); } /** * i40iw_irq_handler - interrupt handler for aeq and ceq0 * @irq: Interrupt request number * @data: iwarp device */ static irqreturn_t i40iw_irq_handler(int irq, void *data) { struct i40iw_device *iwdev = (struct i40iw_device *)data; tasklet_schedule(&iwdev->dpc_tasklet); return IRQ_HANDLED; } /** * i40iw_destroy_cqp - destroy control qp * @iwdev: iwarp device * @create_done: 1 if cqp create poll was success * * Issue destroy cqp request and * free the resources associated with the cqp */ static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_cqp *cqp = &iwdev->cqp; if (free_hwcqp) dev->cqp_ops->cqp_destroy(dev->cqp); i40iw_cleanup_pending_cqp_op(iwdev); i40iw_free_dma_mem(dev->hw, &cqp->sq); kfree(cqp->scratch_array); iwdev->cqp.scratch_array = NULL; kfree(cqp->cqp_requests); cqp->cqp_requests = NULL; } /** * i40iw_disable_irqs - disable device interrupts * @dev: hardware control device structure * @msic_vec: msix vector to disable irq * @dev_id: parameter to pass to free_irq (used during irq setup) * * The function is called when destroying aeq/ceq */ static void i40iw_disable_irq(struct i40iw_sc_dev *dev, struct i40iw_msix_vector *msix_vec, void *dev_id) { if (dev->is_pf) i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0); else i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0); irq_set_affinity_hint(msix_vec->irq, NULL); free_irq(msix_vec->irq, dev_id); } /** * i40iw_destroy_aeq - destroy aeq * @iwdev: iwarp device * * Issue a destroy aeq request and * free the resources associated with the aeq * The function is called during driver unload */ static void i40iw_destroy_aeq(struct i40iw_device *iwdev) { enum i40iw_status_code status = I40IW_ERR_NOT_READY; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_aeq *aeq = &iwdev->aeq; if (!iwdev->msix_shared) i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev); if (iwdev->reset) goto exit; if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1)) status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq); if (status) i40iw_pr_err("destroy aeq failed %d\n", status); exit: i40iw_free_dma_mem(dev->hw, &aeq->mem); } /** * i40iw_destroy_ceq - destroy ceq * @iwdev: iwarp device * @iwceq: ceq to be destroyed * * Issue a destroy ceq request and * free the resources associated with the ceq */ static void i40iw_destroy_ceq(struct i40iw_device *iwdev, struct i40iw_ceq *iwceq) { enum i40iw_status_code status; struct i40iw_sc_dev *dev = &iwdev->sc_dev; if (iwdev->reset) goto exit; status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1); if (status) { i40iw_pr_err("ceq destroy command failed %d\n", status); goto exit; } status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq); if (status) i40iw_pr_err("ceq destroy completion failed %d\n", status); exit: i40iw_free_dma_mem(dev->hw, &iwceq->mem); } /** * i40iw_dele_ceqs - destroy all ceq's * @iwdev: iwarp device * * Go through all of the device ceq's and for each ceq * disable the ceq interrupt and destroy the ceq */ static void i40iw_dele_ceqs(struct i40iw_device *iwdev) { u32 i = 0; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_ceq *iwceq = iwdev->ceqlist; struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl; if (iwdev->msix_shared) { i40iw_disable_irq(dev, msix_vec, (void *)iwdev); i40iw_destroy_ceq(iwdev, iwceq); iwceq++; i++; } for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) { i40iw_disable_irq(dev, msix_vec, (void *)iwceq); i40iw_destroy_ceq(iwdev, iwceq); } iwdev->sc_dev.ceq_valid = false; } /** * i40iw_destroy_ccq - destroy control cq * @iwdev: iwarp device * * Issue destroy ccq request and * free the resources associated with the ccq */ static void i40iw_destroy_ccq(struct i40iw_device *iwdev) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_ccq *ccq = &iwdev->ccq; enum i40iw_status_code status = 0; if (!iwdev->reset) status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true); if (status) i40iw_pr_err("ccq destroy failed %d\n", status); i40iw_free_dma_mem(dev->hw, &ccq->mem_cq); } /* types of hmc objects */ static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = { I40IW_HMC_IW_QP, I40IW_HMC_IW_CQ, I40IW_HMC_IW_HTE, I40IW_HMC_IW_ARP, I40IW_HMC_IW_APBVT_ENTRY, I40IW_HMC_IW_MR, I40IW_HMC_IW_XF, I40IW_HMC_IW_XFFL, I40IW_HMC_IW_Q1, I40IW_HMC_IW_Q1FL, I40IW_HMC_IW_TIMER, }; /** * i40iw_close_hmc_objects_type - delete hmc objects of a given type * @iwdev: iwarp device * @obj_type: the hmc object type to be deleted * @is_pf: true if the function is PF otherwise false * @reset: true if called before reset */ static void i40iw_close_hmc_objects_type(struct i40iw_sc_dev *dev, enum i40iw_hmc_rsrc_type obj_type, struct i40iw_hmc_info *hmc_info, bool is_pf, bool reset) { struct i40iw_hmc_del_obj_info info; memset(&info, 0, sizeof(info)); info.hmc_info = hmc_info; info.rsrc_type = obj_type; info.count = hmc_info->hmc_obj[obj_type].cnt; info.is_pf = is_pf; if (dev->hmc_ops->del_hmc_object(dev, &info, reset)) i40iw_pr_err("del obj of type %d failed\n", obj_type); } /** * i40iw_del_hmc_objects - remove all device hmc objects * @dev: iwarp device * @hmc_info: hmc_info to free * @is_pf: true if hmc_info belongs to PF, not vf nor allocated * by PF on behalf of VF * @reset: true if called before reset */ static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev, struct i40iw_hmc_info *hmc_info, bool is_pf, bool reset) { unsigned int i; for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], hmc_info, is_pf, reset); } /** * i40iw_ceq_handler - interrupt handler for ceq * @data: ceq pointer */ static irqreturn_t i40iw_ceq_handler(int irq, void *data) { struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data; if (iwceq->irq != irq) i40iw_pr_err("expected irq = %d received irq = %d\n", iwceq->irq, irq); tasklet_schedule(&iwceq->dpc_tasklet); return IRQ_HANDLED; } /** * i40iw_create_hmc_obj_type - create hmc object of a given type * @dev: hardware control device structure * @info: information for the hmc object to create */ static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev, struct i40iw_hmc_create_obj_info *info) { return dev->hmc_ops->create_hmc_object(dev, info); } /** * i40iw_create_hmc_objs - create all hmc objects for the device * @iwdev: iwarp device * @is_pf: true if the function is PF otherwise false * * Create the device hmc objects and allocate hmc pages * Return 0 if successful, otherwise clean up and return error */ static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev, bool is_pf) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_hmc_create_obj_info info; enum i40iw_status_code status; int i; memset(&info, 0, sizeof(info)); info.hmc_info = dev->hmc_info; info.is_pf = is_pf; info.entry_type = iwdev->sd_type; for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) { info.rsrc_type = iw_hmc_obj_types[i]; info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt; info.add_sd_cnt = 0; status = i40iw_create_hmc_obj_type(dev, &info); if (status) { i40iw_pr_err("create obj type %d status = %d\n", iw_hmc_obj_types[i], status); break; } } if (!status) return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0, dev->hmc_fn_id, true, true)); while (i) { i--; /* destroy the hmc objects of a given type */ i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], dev->hmc_info, is_pf, false); } return status; } /** * i40iw_obj_aligned_mem - get aligned memory from device allocated memory * @iwdev: iwarp device * @memptr: points to the memory addresses * @size: size of memory needed * @mask: mask for the aligned memory * * Get aligned memory of the requested size and * update the memptr to point to the new aligned memory * Return 0 if successful, otherwise return no memory error */ enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev, struct i40iw_dma_mem *memptr, u32 size, u32 mask) { unsigned long va, newva; unsigned long extra; va = (unsigned long)iwdev->obj_next.va; newva = va; if (mask) newva = ALIGN(va, (mask + 1)); extra = newva - va; memptr->va = (u8 *)va + extra; memptr->pa = iwdev->obj_next.pa + extra; memptr->size = size; if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size)) return I40IW_ERR_NO_MEMORY; iwdev->obj_next.va = memptr->va + size; iwdev->obj_next.pa = memptr->pa + size; return 0; } /** * i40iw_create_cqp - create control qp * @iwdev: iwarp device * * Return 0, if the cqp and all the resources associated with it * are successfully created, otherwise return error */ static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev) { enum i40iw_status_code status; u32 sqsize = I40IW_CQP_SW_SQSIZE_2048; struct i40iw_dma_mem mem; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_cqp_init_info cqp_init_info; struct i40iw_cqp *cqp = &iwdev->cqp; u16 maj_err, min_err; int i; cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL); if (!cqp->cqp_requests) return I40IW_ERR_NO_MEMORY; cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL); if (!cqp->scratch_array) { kfree(cqp->cqp_requests); return I40IW_ERR_NO_MEMORY; } dev->cqp = &cqp->sc_cqp; dev->cqp->dev = dev; memset(&cqp_init_info, 0, sizeof(cqp_init_info)); status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq, (sizeof(struct i40iw_cqp_sq_wqe) * sqsize), I40IW_CQP_ALIGNMENT); if (status) goto exit; status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx), I40IW_HOST_CTX_ALIGNMENT_MASK); if (status) goto exit; dev->cqp->host_ctx_pa = mem.pa; dev->cqp->host_ctx = mem.va; /* populate the cqp init info */ cqp_init_info.dev = dev; cqp_init_info.sq_size = sqsize; cqp_init_info.sq = cqp->sq.va; cqp_init_info.sq_pa = cqp->sq.pa; cqp_init_info.host_ctx_pa = mem.pa; cqp_init_info.host_ctx = mem.va; cqp_init_info.hmc_profile = iwdev->resource_profile; cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs; cqp_init_info.scratch_array = cqp->scratch_array; status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info); if (status) { i40iw_pr_err("cqp init status %d\n", status); goto exit; } status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err); if (status) { i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n", status, maj_err, min_err); goto exit; } spin_lock_init(&cqp->req_lock); INIT_LIST_HEAD(&cqp->cqp_avail_reqs); INIT_LIST_HEAD(&cqp->cqp_pending_reqs); /* init the waitq of the cqp_requests and add them to the list */ for (i = 0; i < sqsize; i++) { init_waitqueue_head(&cqp->cqp_requests[i].waitq); list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs); } return 0; exit: /* clean up the created resources */ i40iw_destroy_cqp(iwdev, false); return status; } /** * i40iw_create_ccq - create control cq * @iwdev: iwarp device * * Return 0, if the ccq and the resources associated with it * are successfully created, otherwise return error */ static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_dma_mem mem; enum i40iw_status_code status; struct i40iw_ccq_init_info info; struct i40iw_ccq *ccq = &iwdev->ccq; memset(&info, 0, sizeof(info)); dev->ccq = &ccq->sc_cq; dev->ccq->dev = dev; info.dev = dev; ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area); ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE; status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq, ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT); if (status) goto exit; status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size, I40IW_SHADOWAREA_MASK); if (status) goto exit; ccq->sc_cq.back_cq = (void *)ccq; /* populate the ccq init info */ info.cq_base = ccq->mem_cq.va; info.cq_pa = ccq->mem_cq.pa; info.num_elem = IW_CCQ_SIZE; info.shadow_area = mem.va; info.shadow_area_pa = mem.pa; info.ceqe_mask = false; info.ceq_id_valid = true; info.shadow_read_threshold = 16; status = dev->ccq_ops->ccq_init(dev->ccq, &info); if (!status) status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true); exit: if (status) i40iw_free_dma_mem(dev->hw, &ccq->mem_cq); return status; } /** * i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq * @iwdev: iwarp device * @msix_vec: interrupt vector information * @iwceq: ceq associated with the vector * @ceq_id: the id number of the iwceq * * Allocate interrupt resources and enable irq handling * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev, struct i40iw_ceq *iwceq, u32 ceq_id, struct i40iw_msix_vector *msix_vec) { enum i40iw_status_code status; if (iwdev->msix_shared && !ceq_id) { tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev); status = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "AEQCEQ", iwdev); } else { tasklet_init(&iwceq->dpc_tasklet, i40iw_ceq_dpc, (unsigned long)iwceq); status = request_irq(msix_vec->irq, i40iw_ceq_handler, 0, "CEQ", iwceq); } cpumask_clear(&msix_vec->mask); cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask); irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask); if (status) { i40iw_pr_err("ceq irq config fail\n"); return I40IW_ERR_CONFIG; } msix_vec->ceq_id = ceq_id; return 0; } /** * i40iw_create_ceq - create completion event queue * @iwdev: iwarp device * @iwceq: pointer to the ceq resources to be created * @ceq_id: the id number of the iwceq * * Return 0, if the ceq and the resources associated with it * are successfully created, otherwise return error */ static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev, struct i40iw_ceq *iwceq, u32 ceq_id) { enum i40iw_status_code status; struct i40iw_ceq_init_info info; struct i40iw_sc_dev *dev = &iwdev->sc_dev; u64 scratch; memset(&info, 0, sizeof(info)); info.ceq_id = ceq_id; iwceq->iwdev = iwdev; iwceq->mem.size = sizeof(struct i40iw_ceqe) * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt; status = i40iw_allocate_dma_mem(dev->hw, &iwceq->mem, iwceq->mem.size, I40IW_CEQ_ALIGNMENT); if (status) goto exit; info.ceq_id = ceq_id; info.ceqe_base = iwceq->mem.va; info.ceqe_pa = iwceq->mem.pa; info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt; iwceq->sc_ceq.ceq_id = ceq_id; info.dev = dev; scratch = (uintptr_t)&iwdev->cqp.sc_cqp; status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info); if (!status) status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch); exit: if (status) i40iw_free_dma_mem(dev->hw, &iwceq->mem); return status; } void i40iw_request_reset(struct i40iw_device *iwdev) { struct i40e_info *ldev = iwdev->ldev; ldev->ops->request_reset(ldev, iwdev->client, 1); } /** * i40iw_setup_ceqs - manage the device ceq's and their interrupt resources * @iwdev: iwarp device * @ldev: i40e lan device * * Allocate a list for all device completion event queues * Create the ceq's and configure their msix interrupt vectors * Return 0, if at least one ceq is successfully set up, otherwise return error */ static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev, struct i40e_info *ldev) { u32 i; u32 ceq_id; struct i40iw_ceq *iwceq; struct i40iw_msix_vector *msix_vec; enum i40iw_status_code status = 0; u32 num_ceqs; if (ldev && ldev->ops && ldev->ops->setup_qvlist) { status = ldev->ops->setup_qvlist(ldev, &i40iw_client, iwdev->iw_qvlist); if (status) goto exit; } else { status = I40IW_ERR_BAD_PTR; goto exit; } num_ceqs = min(iwdev->msix_count, iwdev->sc_dev.hmc_fpm_misc.max_ceqs); iwdev->ceqlist = kcalloc(num_ceqs, sizeof(*iwdev->ceqlist), GFP_KERNEL); if (!iwdev->ceqlist) { status = I40IW_ERR_NO_MEMORY; goto exit; } i = (iwdev->msix_shared) ? 0 : 1; for (ceq_id = 0; i < num_ceqs; i++, ceq_id++) { iwceq = &iwdev->ceqlist[ceq_id]; status = i40iw_create_ceq(iwdev, iwceq, ceq_id); if (status) { i40iw_pr_err("create ceq status = %d\n", status); break; } msix_vec = &iwdev->iw_msixtbl[i]; iwceq->irq = msix_vec->irq; iwceq->msix_idx = msix_vec->idx; status = i40iw_configure_ceq_vector(iwdev, iwceq, ceq_id, msix_vec); if (status) { i40iw_destroy_ceq(iwdev, iwceq); break; } i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx); iwdev->ceqs_count++; } exit: if (status && !iwdev->ceqs_count) { kfree(iwdev->ceqlist); iwdev->ceqlist = NULL; return status; } else { iwdev->sc_dev.ceq_valid = true; return 0; } } /** * i40iw_configure_aeq_vector - set up the msix vector for aeq * @iwdev: iwarp device * * Allocate interrupt resources and enable irq handling * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev) { struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl; u32 ret = 0; if (!iwdev->msix_shared) { tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev); ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev); } if (ret) { i40iw_pr_err("aeq irq config fail\n"); return I40IW_ERR_CONFIG; } return 0; } /** * i40iw_create_aeq - create async event queue * @iwdev: iwarp device * * Return 0, if the aeq and the resources associated with it * are successfully created, otherwise return error */ static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev) { enum i40iw_status_code status; struct i40iw_aeq_init_info info; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_aeq *aeq = &iwdev->aeq; u64 scratch = 0; u32 aeq_size; aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt + iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt; memset(&info, 0, sizeof(info)); aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size; status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size, I40IW_AEQ_ALIGNMENT); if (status) goto exit; info.aeqe_base = aeq->mem.va; info.aeq_elem_pa = aeq->mem.pa; info.elem_cnt = aeq_size; info.dev = dev; status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info); if (status) goto exit; status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1); if (!status) status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq); exit: if (status) i40iw_free_dma_mem(dev->hw, &aeq->mem); return status; } /** * i40iw_setup_aeq - set up the device aeq * @iwdev: iwarp device * * Create the aeq and configure its msix interrupt vector * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; enum i40iw_status_code status; status = i40iw_create_aeq(iwdev); if (status) return status; status = i40iw_configure_aeq_vector(iwdev); if (status) { i40iw_destroy_aeq(iwdev); return status; } if (!iwdev->msix_shared) i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx); return 0; } /** * i40iw_initialize_ilq - create iwarp local queue for cm * @iwdev: iwarp device * * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev) { struct i40iw_puda_rsrc_info info; enum i40iw_status_code status; memset(&info, 0, sizeof(info)); info.type = I40IW_PUDA_RSRC_TYPE_ILQ; info.cq_id = 1; info.qp_id = 0; info.count = 1; info.pd_id = 1; info.sq_size = 8192; info.rq_size = 8192; info.buf_size = 1024; info.tx_buf_cnt = 16384; info.receive = i40iw_receive_ilq; info.xmit_complete = i40iw_free_sqbuf; status = i40iw_puda_create_rsrc(&iwdev->vsi, &info); if (status) i40iw_pr_err("ilq create fail\n"); return status; } /** * i40iw_initialize_ieq - create iwarp exception queue * @iwdev: iwarp device * * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev) { struct i40iw_puda_rsrc_info info; enum i40iw_status_code status; memset(&info, 0, sizeof(info)); info.type = I40IW_PUDA_RSRC_TYPE_IEQ; info.cq_id = 2; info.qp_id = iwdev->vsi.exception_lan_queue; info.count = 1; info.pd_id = 2; info.sq_size = 8192; info.rq_size = 8192; info.buf_size = iwdev->vsi.mtu + VLAN_ETH_HLEN; info.tx_buf_cnt = 4096; status = i40iw_puda_create_rsrc(&iwdev->vsi, &info); if (status) i40iw_pr_err("ieq create fail\n"); return status; } /** * i40iw_reinitialize_ieq - destroy and re-create ieq * @dev: iwarp device */ void i40iw_reinitialize_ieq(struct i40iw_sc_dev *dev) { struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, false); if (i40iw_initialize_ieq(iwdev)) { iwdev->reset = true; i40iw_request_reset(iwdev); } } /** * i40iw_hmc_setup - create hmc objects for the device * @iwdev: iwarp device * * Set up the device private memory space for the number and size of * the hmc objects and create the objects * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev) { enum i40iw_status_code status; iwdev->sd_type = I40IW_SD_TYPE_DIRECT; status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT); if (status) goto exit; status = i40iw_create_hmc_objs(iwdev, true); if (status) goto exit; iwdev->init_state = HMC_OBJS_CREATED; exit: return status; } /** * i40iw_del_init_mem - deallocate memory resources * @iwdev: iwarp device */ static void i40iw_del_init_mem(struct i40iw_device *iwdev) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem); kfree(dev->hmc_info->sd_table.sd_entry); dev->hmc_info->sd_table.sd_entry = NULL; kfree(iwdev->mem_resources); iwdev->mem_resources = NULL; kfree(iwdev->ceqlist); iwdev->ceqlist = NULL; kfree(iwdev->iw_msixtbl); iwdev->iw_msixtbl = NULL; kfree(iwdev->hmc_info_mem); iwdev->hmc_info_mem = NULL; } /** * i40iw_del_macip_entry - remove a mac ip address entry from the hw table * @iwdev: iwarp device * @idx: the index of the mac ip address to delete */ static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx) { struct i40iw_cqp *iwcqp = &iwdev->cqp; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; enum i40iw_status_code status = 0; cqp_request = i40iw_get_cqp_request(iwcqp, true); if (!cqp_request) { i40iw_pr_err("cqp_request memory failed\n"); return; } cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY; cqp_info->post_sq = 1; cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp; cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request; cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx; cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Del MAC Ip entry fail"); } /** * i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table * @iwdev: iwarp device * @mac_addr: pointer to mac address * @idx: the index of the mac ip address to add */ static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev, u8 *mac_addr, u8 idx) { struct i40iw_local_mac_ipaddr_entry_info *info; struct i40iw_cqp *iwcqp = &iwdev->cqp; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; enum i40iw_status_code status = 0; cqp_request = i40iw_get_cqp_request(iwcqp, true); if (!cqp_request) { i40iw_pr_err("cqp_request memory failed\n"); return I40IW_ERR_NO_MEMORY; } cqp_info = &cqp_request->info; cqp_info->post_sq = 1; info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info; ether_addr_copy(info->mac_addr, mac_addr); info->entry_idx = idx; cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request; cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY; cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp; cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Add MAC Ip entry fail"); return status; } /** * i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry * @iwdev: iwarp device * @mac_ip_tbl_idx: the index of the new mac ip address * * Allocate a mac ip address entry and update the mac_ip_tbl_idx * to hold the index of the newly created mac ip address * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev, u16 *mac_ip_tbl_idx) { struct i40iw_cqp *iwcqp = &iwdev->cqp; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; enum i40iw_status_code status = 0; cqp_request = i40iw_get_cqp_request(iwcqp, true); if (!cqp_request) { i40iw_pr_err("cqp_request memory failed\n"); return I40IW_ERR_NO_MEMORY; } /* increment refcount, because we need the cqp request ret value */ atomic_inc(&cqp_request->refcount); cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY; cqp_info->post_sq = 1; cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp; cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (!status) *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val; else i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail"); /* decrement refcount and free the cqp request, if no longer used */ i40iw_put_cqp_request(iwcqp, cqp_request); return status; } /** * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry * @iwdev: iwarp device * @macaddr: pointer to mac address * * Allocate a mac ip address entry and add it to the hw table * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev, u8 *macaddr) { enum i40iw_status_code status; status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx); if (!status) { status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr, (u8)iwdev->mac_ip_table_idx); if (status) i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx); } return status; } /** * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table * @iwdev: iwarp device */ static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev) { struct net_device *ip_dev; struct inet6_dev *idev; struct inet6_ifaddr *ifp, *tmp; u32 local_ipaddr6[4]; rcu_read_lock(); for_each_netdev_rcu(&init_net, ip_dev) { if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) && (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) || (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) { idev = __in6_dev_get(ip_dev); if (!idev) { i40iw_pr_err("ipv6 inet device not found\n"); break; } list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) { i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr, rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr); i40iw_copy_ip_ntohl(local_ipaddr6, ifp->addr.in6_u.u6_addr32); i40iw_manage_arp_cache(iwdev, ip_dev->dev_addr, local_ipaddr6, false, I40IW_ARP_ADD); } } } rcu_read_unlock(); } /** * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table * @iwdev: iwarp device */ static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev) { struct net_device *dev; struct in_device *idev; bool got_lock = true; u32 ip_addr; if (!rtnl_trylock()) got_lock = false; for_each_netdev(&init_net, dev) { if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) && (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) || (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) { const struct in_ifaddr *ifa; idev = in_dev_get(dev); if (!idev) continue; in_dev_for_each_ifa_rtnl(ifa, idev) { i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM, "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address, rdma_vlan_dev_vlan_id(dev), dev->dev_addr); ip_addr = ntohl(ifa->ifa_address); i40iw_manage_arp_cache(iwdev, dev->dev_addr, &ip_addr, true, I40IW_ARP_ADD); } in_dev_put(idev); } } if (got_lock) rtnl_unlock(); } /** * i40iw_add_mac_ip - add mac and ip addresses * @iwdev: iwarp device * * Create and add a mac ip address entry to the hw table and * ipv4/ipv6 addresses to the arp cache * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev) { struct net_device *netdev = iwdev->netdev; enum i40iw_status_code status; status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr); if (status) return status; i40iw_add_ipv4_addr(iwdev); i40iw_add_ipv6_addr(iwdev); return 0; } /** * i40iw_wait_pe_ready - Check if firmware is ready * @hw: provides access to registers */ static void i40iw_wait_pe_ready(struct i40iw_hw *hw) { u32 statusfw; u32 statuscpu0; u32 statuscpu1; u32 statuscpu2; u32 retrycount = 0; do { statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS); i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw); statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0); i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0); statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1); i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n", __LINE__, statuscpu1); statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2); i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n", __LINE__, statuscpu2); if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80)) break; /* SUCCESS */ msleep(1000); retrycount++; } while (retrycount < 14); i40iw_wr32(hw, 0xb4040, 0x4C104C5); } /** * i40iw_initialize_dev - initialize device * @iwdev: iwarp device * @ldev: lan device information * * Allocate memory for the hmc objects and initialize iwdev * Return 0 if successful, otherwise clean up the resources * and return error */ static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev, struct i40e_info *ldev) { enum i40iw_status_code status; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_device_init_info info; struct i40iw_vsi_init_info vsi_info; struct i40iw_dma_mem mem; struct i40iw_l2params l2params; u32 size; struct i40iw_vsi_stats_info stats_info; u16 last_qset = I40IW_NO_QSET; u16 qset; u32 i; memset(&l2params, 0, sizeof(l2params)); memset(&info, 0, sizeof(info)); size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) + (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX); iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL); if (!iwdev->hmc_info_mem) return I40IW_ERR_NO_MEMORY; iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem; dev->hmc_info = &iwdev->hw.hmc; dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1); status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE, I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK); if (status) goto error; info.fpm_query_buf_pa = mem.pa; info.fpm_query_buf = mem.va; status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE, I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK); if (status) goto error; info.fpm_commit_buf_pa = mem.pa; info.fpm_commit_buf = mem.va; info.hmc_fn_id = ldev->fid; info.is_pf = (ldev->ftype) ? false : true; info.bar0 = ldev->hw_addr; info.hw = &iwdev->hw; info.debug_mask = debug; l2params.mtu = (ldev->params.mtu) ? ldev->params.mtu : I40IW_DEFAULT_MTU; for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) { qset = ldev->params.qos.prio_qos[i].qs_handle; l2params.qs_handle_list[i] = qset; if (last_qset == I40IW_NO_QSET) last_qset = qset; else if ((qset != last_qset) && (qset != I40IW_NO_QSET)) iwdev->dcb = true; } i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb); info.vchnl_send = i40iw_virtchnl_send; status = i40iw_device_init(&iwdev->sc_dev, &info); if (status) goto error; memset(&vsi_info, 0, sizeof(vsi_info)); vsi_info.dev = &iwdev->sc_dev; vsi_info.back_vsi = (void *)iwdev; vsi_info.params = &l2params; vsi_info.exception_lan_queue = 1; i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info); if (dev->is_pf) { memset(&stats_info, 0, sizeof(stats_info)); stats_info.fcn_id = ldev->fid; stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL); if (!stats_info.pestat) { status = I40IW_ERR_NO_MEMORY; goto error; } stats_info.stats_initialize = true; if (stats_info.pestat) i40iw_vsi_stats_init(&iwdev->vsi, &stats_info); } return status; error: kfree(iwdev->hmc_info_mem); iwdev->hmc_info_mem = NULL; return status; } /** * i40iw_register_notifiers - register tcp ip notifiers */ static void i40iw_register_notifiers(void) { register_inetaddr_notifier(&i40iw_inetaddr_notifier); register_inet6addr_notifier(&i40iw_inetaddr6_notifier); register_netevent_notifier(&i40iw_net_notifier); register_netdevice_notifier(&i40iw_netdevice_notifier); } /** * i40iw_unregister_notifiers - unregister tcp ip notifiers */ static void i40iw_unregister_notifiers(void) { unregister_netevent_notifier(&i40iw_net_notifier); unregister_inetaddr_notifier(&i40iw_inetaddr_notifier); unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier); unregister_netdevice_notifier(&i40iw_netdevice_notifier); } /** * i40iw_save_msix_info - copy msix vector information to iwarp device * @iwdev: iwarp device * @ldev: lan device information * * Allocate iwdev msix table and copy the ldev msix info to the table * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev, struct i40e_info *ldev) { struct i40e_qvlist_info *iw_qvlist; struct i40e_qv_info *iw_qvinfo; u32 ceq_idx; u32 i; u32 size; if (!ldev->msix_count) { i40iw_pr_err("No MSI-X vectors\n"); return I40IW_ERR_CONFIG; } iwdev->msix_count = ldev->msix_count; size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count; size += sizeof(struct i40e_qvlist_info); size += sizeof(struct i40e_qv_info) * iwdev->msix_count - 1; iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL); if (!iwdev->iw_msixtbl) return I40IW_ERR_NO_MEMORY; iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]); iw_qvlist = iwdev->iw_qvlist; iw_qvinfo = iw_qvlist->qv_info; iw_qvlist->num_vectors = iwdev->msix_count; if (iwdev->msix_count <= num_online_cpus()) iwdev->msix_shared = true; for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) { iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry; iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector; iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx; if (i == 0) { iw_qvinfo->aeq_idx = 0; if (iwdev->msix_shared) iw_qvinfo->ceq_idx = ceq_idx++; else iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX; } else { iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX; iw_qvinfo->ceq_idx = ceq_idx++; } iw_qvinfo->itr_idx = 3; iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx; } return 0; } /** * i40iw_deinit_device - clean up the device resources * @iwdev: iwarp device * * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses, * destroy the device queues and free the pble and the hmc objects */ static void i40iw_deinit_device(struct i40iw_device *iwdev) { struct i40e_info *ldev = iwdev->ldev; struct i40iw_sc_dev *dev = &iwdev->sc_dev; i40iw_pr_info("state = %d\n", iwdev->init_state); if (iwdev->param_wq) destroy_workqueue(iwdev->param_wq); switch (iwdev->init_state) { case RDMA_DEV_REGISTERED: iwdev->iw_status = 0; i40iw_port_ibevent(iwdev); i40iw_destroy_rdma_device(iwdev->iwibdev); /* fallthrough */ case IP_ADDR_REGISTERED: if (!iwdev->reset) i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx); /* fallthrough */ /* fallthrough */ case PBLE_CHUNK_MEM: i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc); /* fallthrough */ case CEQ_CREATED: i40iw_dele_ceqs(iwdev); /* fallthrough */ case AEQ_CREATED: i40iw_destroy_aeq(iwdev); /* fallthrough */ case IEQ_CREATED: i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, iwdev->reset); /* fallthrough */ case ILQ_CREATED: i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, iwdev->reset); /* fallthrough */ case CCQ_CREATED: i40iw_destroy_ccq(iwdev); /* fallthrough */ case HMC_OBJS_CREATED: i40iw_del_hmc_objects(dev, dev->hmc_info, true, iwdev->reset); /* fallthrough */ case CQP_CREATED: i40iw_destroy_cqp(iwdev, true); /* fallthrough */ case INITIAL_STATE: i40iw_cleanup_cm_core(&iwdev->cm_core); if (iwdev->vsi.pestat) { i40iw_vsi_stats_free(&iwdev->vsi); kfree(iwdev->vsi.pestat); } i40iw_del_init_mem(iwdev); break; case INVALID_STATE: /* fallthrough */ default: i40iw_pr_err("bad init_state = %d\n", iwdev->init_state); break; } i40iw_del_handler(i40iw_find_i40e_handler(ldev)); kfree(iwdev->hdl); } /** * i40iw_setup_init_state - set up the initial device struct * @hdl: handler for iwarp device - one per instance * @ldev: lan device information * @client: iwarp client information, provided during registration * * Initialize the iwarp device and its hdl information * using the ldev and client information * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl, struct i40e_info *ldev, struct i40e_client *client) { struct i40iw_device *iwdev = &hdl->device; struct i40iw_sc_dev *dev = &iwdev->sc_dev; enum i40iw_status_code status; memcpy(&hdl->ldev, ldev, sizeof(*ldev)); iwdev->mpa_version = mpa_version; iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ? (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT : I40IW_HMC_PROFILE_DEFAULT; iwdev->max_rdma_vfs = (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ? max_rdma_vfs : 0; iwdev->max_enabled_vfs = iwdev->max_rdma_vfs; iwdev->netdev = ldev->netdev; hdl->client = client; if (!ldev->ftype) iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET; else iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET; status = i40iw_save_msix_info(iwdev, ldev); if (status) return status; iwdev->hw.dev_context = (void *)ldev->pcidev; iwdev->hw.hw_addr = ldev->hw_addr; status = i40iw_allocate_dma_mem(&iwdev->hw, &iwdev->obj_mem, 8192, 4096); if (status) goto exit; iwdev->obj_next = iwdev->obj_mem; iwdev->push_mode = push_mode; init_waitqueue_head(&iwdev->vchnl_waitq); init_waitqueue_head(&dev->vf_reqs); init_waitqueue_head(&iwdev->close_wq); status = i40iw_initialize_dev(iwdev, ldev); exit: if (status) { kfree(iwdev->iw_msixtbl); i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem); iwdev->iw_msixtbl = NULL; } return status; } /** * i40iw_get_used_rsrc - determine resources used internally * @iwdev: iwarp device * * Called after internal allocations */ static void i40iw_get_used_rsrc(struct i40iw_device *iwdev) { iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0); iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0); iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0); iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0); } /** * i40iw_open - client interface operation open for iwarp/uda device * @ldev: lan device information * @client: iwarp client information, provided during registration * * Called by the lan driver during the processing of client register * Create device resources, set up queues, pble and hmc objects and * register the device with the ib verbs interface * Return 0 if successful, otherwise return error */ static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client) { struct i40iw_device *iwdev; struct i40iw_sc_dev *dev; enum i40iw_status_code status; struct i40iw_handler *hdl; hdl = i40iw_find_netdev(ldev->netdev); if (hdl) return 0; hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); if (!hdl) return -ENOMEM; iwdev = &hdl->device; iwdev->hdl = hdl; dev = &iwdev->sc_dev; if (i40iw_setup_cm_core(iwdev)) { kfree(iwdev->hdl); return -ENOMEM; } dev->back_dev = (void *)iwdev; iwdev->ldev = &hdl->ldev; iwdev->client = client; mutex_init(&iwdev->pbl_mutex); i40iw_add_handler(hdl); do { status = i40iw_setup_init_state(hdl, ldev, client); if (status) break; iwdev->init_state = INITIAL_STATE; if (dev->is_pf) i40iw_wait_pe_ready(dev->hw); status = i40iw_create_cqp(iwdev); if (status) break; iwdev->init_state = CQP_CREATED; status = i40iw_hmc_setup(iwdev); if (status) break; status = i40iw_create_ccq(iwdev); if (status) break; iwdev->init_state = CCQ_CREATED; status = i40iw_initialize_ilq(iwdev); if (status) break; iwdev->init_state = ILQ_CREATED; status = i40iw_initialize_ieq(iwdev); if (status) break; iwdev->init_state = IEQ_CREATED; status = i40iw_setup_aeq(iwdev); if (status) break; iwdev->init_state = AEQ_CREATED; status = i40iw_setup_ceqs(iwdev, ldev); if (status) break; iwdev->init_state = CEQ_CREATED; status = i40iw_initialize_hw_resources(iwdev); if (status) break; i40iw_get_used_rsrc(iwdev); dev->ccq_ops->ccq_arm(dev->ccq); status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc); if (status) break; iwdev->init_state = PBLE_CHUNK_MEM; iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM); status = i40iw_add_mac_ip(iwdev); if (status) break; iwdev->init_state = IP_ADDR_REGISTERED; if (i40iw_register_rdma_device(iwdev)) { i40iw_pr_err("register rdma device fail\n"); break; }; iwdev->init_state = RDMA_DEV_REGISTERED; iwdev->iw_status = 1; i40iw_port_ibevent(iwdev); iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM); if(iwdev->param_wq == NULL) break; i40iw_pr_info("i40iw_open completed\n"); return 0; } while (0); i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state); i40iw_deinit_device(iwdev); return -ERESTART; } /** * i40iw_l2params_worker - worker for l2 params change * @work: work pointer for l2 params */ static void i40iw_l2params_worker(struct work_struct *work) { struct l2params_work *dwork = container_of(work, struct l2params_work, work); struct i40iw_device *iwdev = dwork->iwdev; i40iw_change_l2params(&iwdev->vsi, &dwork->l2params); atomic_dec(&iwdev->params_busy); kfree(work); } /** * i40iw_l2param_change - handle qs handles for qos and mss change * @ldev: lan device information * @client: client for paramater change * @params: new parameters from L2 */ static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client, struct i40e_params *params) { struct i40iw_handler *hdl; struct i40iw_l2params *l2params; struct l2params_work *work; struct i40iw_device *iwdev; int i; hdl = i40iw_find_i40e_handler(ldev); if (!hdl) return; iwdev = &hdl->device; if (atomic_read(&iwdev->params_busy)) return; work = kzalloc(sizeof(*work), GFP_KERNEL); if (!work) return; atomic_inc(&iwdev->params_busy); work->iwdev = iwdev; l2params = &work->l2params; for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle; l2params->mtu = (params->mtu) ? params->mtu : iwdev->vsi.mtu; INIT_WORK(&work->work, i40iw_l2params_worker); queue_work(iwdev->param_wq, &work->work); } /** * i40iw_close - client interface operation close for iwarp/uda device * @ldev: lan device information * @client: client to close * * Called by the lan driver during the processing of client unregister * Destroy and clean up the driver resources */ static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset) { struct i40iw_device *iwdev; struct i40iw_handler *hdl; hdl = i40iw_find_i40e_handler(ldev); if (!hdl) return; iwdev = &hdl->device; iwdev->closing = true; if (reset) iwdev->reset = true; i40iw_cm_teardown_connections(iwdev, NULL, NULL, true); destroy_workqueue(iwdev->virtchnl_wq); i40iw_deinit_device(iwdev); } /** * i40iw_vf_reset - process VF reset * @ldev: lan device information * @client: client interface instance * @vf_id: virtual function id * * Called when a VF is reset by the PF * Destroy and clean up the VF resources */ static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id) { struct i40iw_handler *hdl; struct i40iw_sc_dev *dev; struct i40iw_hmc_fcn_info hmc_fcn_info; struct i40iw_virt_mem vf_dev_mem; struct i40iw_vfdev *tmp_vfdev; unsigned int i; unsigned long flags; struct i40iw_device *iwdev; hdl = i40iw_find_i40e_handler(ldev); if (!hdl) return; dev = &hdl->device.sc_dev; iwdev = (struct i40iw_device *)dev->back_dev; for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) { if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id)) continue; /* free all resources allocated on behalf of vf */ tmp_vfdev = dev->vf_dev[i]; spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags); dev->vf_dev[i] = NULL; spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags); i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false); /* remove vf hmc function */ memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info)); hmc_fcn_info.vf_id = vf_id; hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx; hmc_fcn_info.free_fcn = true; i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info); /* free vf_dev */ vf_dev_mem.va = tmp_vfdev; vf_dev_mem.size = sizeof(struct i40iw_vfdev) + sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX; i40iw_free_virt_mem(dev->hw, &vf_dev_mem); break; } } /** * i40iw_vf_enable - enable a number of VFs * @ldev: lan device information * @client: client interface instance * @num_vfs: number of VFs for the PF * * Called when the number of VFs changes */ static void i40iw_vf_enable(struct i40e_info *ldev, struct i40e_client *client, u32 num_vfs) { struct i40iw_handler *hdl; hdl = i40iw_find_i40e_handler(ldev); if (!hdl) return; if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT) hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT; else hdl->device.max_enabled_vfs = num_vfs; } /** * i40iw_vf_capable - check if VF capable * @ldev: lan device information * @client: client interface instance * @vf_id: virtual function id * * Return 1 if a VF slot is available or if VF is already RDMA enabled * Return 0 otherwise */ static int i40iw_vf_capable(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id) { struct i40iw_handler *hdl; struct i40iw_sc_dev *dev; unsigned int i; hdl = i40iw_find_i40e_handler(ldev); if (!hdl) return 0; dev = &hdl->device.sc_dev; for (i = 0; i < hdl->device.max_enabled_vfs; i++) { if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id)) return 1; } return 0; } /** * i40iw_virtchnl_receive - receive a message through the virtual channel * @ldev: lan device information * @client: client interface instance * @vf_id: virtual function id associated with the message * @msg: message buffer pointer * @len: length of the message * * Invoke virtual channel receive operation for the given msg * Return 0 if successful, otherwise return error */ static int i40iw_virtchnl_receive(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id, u8 *msg, u16 len) { struct i40iw_handler *hdl; struct i40iw_sc_dev *dev; struct i40iw_device *iwdev; int ret_code = I40IW_NOT_SUPPORTED; if (!len || !msg) return I40IW_ERR_PARAM; hdl = i40iw_find_i40e_handler(ldev); if (!hdl) return I40IW_ERR_PARAM; dev = &hdl->device.sc_dev; iwdev = dev->back_dev; if (dev->vchnl_if.vchnl_recv) { ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len); if (!dev->is_pf) { atomic_dec(&iwdev->vchnl_msgs); wake_up(&iwdev->vchnl_waitq); } } return ret_code; } /** * i40iw_vf_clear_to_send - wait to send virtual channel message * @dev: iwarp device * * Wait for until virtual channel is clear * before sending the next message * * Returns false if error * Returns true if clear to send */ bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev) { struct i40iw_device *iwdev; wait_queue_entry_t wait; iwdev = dev->back_dev; if (!wq_has_sleeper(&dev->vf_reqs) && (atomic_read(&iwdev->vchnl_msgs) == 0)) return true; /* virtual channel is clear */ init_wait(&wait); add_wait_queue_exclusive(&dev->vf_reqs, &wait); if (!wait_event_timeout(dev->vf_reqs, (atomic_read(&iwdev->vchnl_msgs) == 0), I40IW_VCHNL_EVENT_TIMEOUT)) dev->vchnl_up = false; remove_wait_queue(&dev->vf_reqs, &wait); return dev->vchnl_up; } /** * i40iw_virtchnl_send - send a message through the virtual channel * @dev: iwarp device * @vf_id: virtual function id associated with the message * @msg: virtual channel message buffer pointer * @len: length of the message * * Invoke virtual channel send operation for the given msg * Return 0 if successful, otherwise return error */ static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev, u32 vf_id, u8 *msg, u16 len) { struct i40iw_device *iwdev; struct i40e_info *ldev; if (!dev || !dev->back_dev) return I40IW_ERR_BAD_PTR; iwdev = dev->back_dev; ldev = iwdev->ldev; if (ldev && ldev->ops && ldev->ops->virtchnl_send) return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len); return I40IW_ERR_BAD_PTR; } /* client interface functions */ static const struct i40e_client_ops i40e_ops = { .open = i40iw_open, .close = i40iw_close, .l2_param_change = i40iw_l2param_change, .virtchnl_receive = i40iw_virtchnl_receive, .vf_reset = i40iw_vf_reset, .vf_enable = i40iw_vf_enable, .vf_capable = i40iw_vf_capable }; /** * i40iw_init_module - driver initialization function * * First function to call when the driver is loaded * Register the driver as i40e client and port mapper client */ static int __init i40iw_init_module(void) { int ret; memset(&i40iw_client, 0, sizeof(i40iw_client)); i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR; i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR; i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD; i40iw_client.ops = &i40e_ops; memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH); i40iw_client.type = I40E_CLIENT_IWARP; spin_lock_init(&i40iw_handler_lock); ret = i40e_register_client(&i40iw_client); i40iw_register_notifiers(); return ret; } /** * i40iw_exit_module - driver exit clean up function * * The function is called just before the driver is unloaded * Unregister the driver as i40e client and port mapper client */ static void __exit i40iw_exit_module(void) { i40iw_unregister_notifiers(); i40e_unregister_client(&i40iw_client); } module_init(i40iw_init_module); module_exit(i40iw_exit_module);