/* * QLogic iSCSI Offload Driver * Copyright (c) 2016 Cavium Inc. * * This software is available 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "qedi.h" #include "qedi_gbl.h" #include "qedi_iscsi.h" static uint qedi_fw_debug; module_param(qedi_fw_debug, uint, 0644); MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; module_param(qedi_dbg_log, uint, 0644); MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); uint qedi_io_tracing; module_param(qedi_io_tracing, uint, 0644); MODULE_PARM_DESC(qedi_io_tracing, " Enable logging of SCSI requests/completions into trace buffer. (default off)."); const struct qed_iscsi_ops *qedi_ops; static struct scsi_transport_template *qedi_scsi_transport; static struct pci_driver qedi_pci_driver; static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); static LIST_HEAD(qedi_udev_list); /* Static function declaration */ static int qedi_alloc_global_queues(struct qedi_ctx *qedi); static void qedi_free_global_queues(struct qedi_ctx *qedi); static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) { struct qedi_ctx *qedi; struct qedi_endpoint *qedi_ep; struct iscsi_eqe_data *data; int rval = 0; if (!context || !fw_handle) { QEDI_ERR(NULL, "Recv event with ctx NULL\n"); return -EINVAL; } qedi = (struct qedi_ctx *)context; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); data = (struct iscsi_eqe_data *)fw_handle; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", data->icid, data->conn_id, data->error_code, data->error_pdu_opcode_reserved); qedi_ep = qedi->ep_tbl[data->icid]; if (!qedi_ep) { QEDI_WARN(&qedi->dbg_ctx, "Cannot process event, ep already disconnected, cid=0x%x\n", data->icid); WARN_ON(1); return -ENODEV; } switch (fw_event_code) { case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: if (qedi_ep->state == EP_STATE_OFLDCONN_START) qedi_ep->state = EP_STATE_OFLDCONN_COMPL; wake_up_interruptible(&qedi_ep->tcp_ofld_wait); break; case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: qedi_ep->state = EP_STATE_DISCONN_COMPL; wake_up_interruptible(&qedi_ep->tcp_ofld_wait); break; case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: qedi_process_iscsi_error(qedi_ep, data); break; case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: qedi_process_tcp_error(qedi_ep, data); break; default: QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", fw_event_code); } return rval; } static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) { struct qedi_uio_dev *udev = uinfo->priv; struct qedi_ctx *qedi = udev->qedi; if (!capable(CAP_NET_ADMIN)) return -EPERM; if (udev->uio_dev != -1) return -EBUSY; rtnl_lock(); udev->uio_dev = iminor(inode); qedi_reset_uio_rings(udev); set_bit(UIO_DEV_OPENED, &qedi->flags); rtnl_unlock(); return 0; } static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) { struct qedi_uio_dev *udev = uinfo->priv; struct qedi_ctx *qedi = udev->qedi; udev->uio_dev = -1; clear_bit(UIO_DEV_OPENED, &qedi->flags); qedi_ll2_free_skbs(qedi); return 0; } static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) { if (udev->uctrl) { free_page((unsigned long)udev->uctrl); udev->uctrl = NULL; } if (udev->ll2_ring) { free_page((unsigned long)udev->ll2_ring); udev->ll2_ring = NULL; } if (udev->ll2_buf) { free_pages((unsigned long)udev->ll2_buf, 2); udev->ll2_buf = NULL; } } static void __qedi_free_uio(struct qedi_uio_dev *udev) { uio_unregister_device(&udev->qedi_uinfo); __qedi_free_uio_rings(udev); pci_dev_put(udev->pdev); kfree(udev); } static void qedi_free_uio(struct qedi_uio_dev *udev) { if (!udev) return; list_del_init(&udev->list); __qedi_free_uio(udev); } static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) { struct qedi_ctx *qedi = NULL; struct qedi_uio_ctrl *uctrl = NULL; qedi = udev->qedi; uctrl = udev->uctrl; spin_lock_bh(&qedi->ll2_lock); uctrl->host_rx_cons = 0; uctrl->hw_rx_prod = 0; uctrl->hw_rx_bd_prod = 0; uctrl->host_rx_bd_cons = 0; memset(udev->ll2_ring, 0, udev->ll2_ring_size); memset(udev->ll2_buf, 0, udev->ll2_buf_size); spin_unlock_bh(&qedi->ll2_lock); } static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) { int rc = 0; if (udev->ll2_ring || udev->ll2_buf) return rc; /* Memory for control area. */ udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); if (!udev->uctrl) return -ENOMEM; /* Allocating memory for LL2 ring */ udev->ll2_ring_size = QEDI_PAGE_SIZE; udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); if (!udev->ll2_ring) { rc = -ENOMEM; goto exit_alloc_ring; } /* Allocating memory for Tx/Rx pkt buffer */ udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE; udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | __GFP_ZERO, 2); if (!udev->ll2_buf) { rc = -ENOMEM; goto exit_alloc_buf; } return rc; exit_alloc_buf: free_page((unsigned long)udev->ll2_ring); udev->ll2_ring = NULL; exit_alloc_ring: return rc; } static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) { struct qedi_uio_dev *udev = NULL; int rc = 0; list_for_each_entry(udev, &qedi_udev_list, list) { if (udev->pdev == qedi->pdev) { udev->qedi = qedi; if (__qedi_alloc_uio_rings(udev)) { udev->qedi = NULL; return -ENOMEM; } qedi->udev = udev; return 0; } } udev = kzalloc(sizeof(*udev), GFP_KERNEL); if (!udev) { rc = -ENOMEM; goto err_udev; } udev->uio_dev = -1; udev->qedi = qedi; udev->pdev = qedi->pdev; rc = __qedi_alloc_uio_rings(udev); if (rc) goto err_uctrl; list_add(&udev->list, &qedi_udev_list); pci_dev_get(udev->pdev); qedi->udev = udev; udev->tx_pkt = udev->ll2_buf; udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE; return 0; err_uctrl: kfree(udev); err_udev: return -ENOMEM; } static int qedi_init_uio(struct qedi_ctx *qedi) { struct qedi_uio_dev *udev = qedi->udev; struct uio_info *uinfo; int ret = 0; if (!udev) return -ENOMEM; uinfo = &udev->qedi_uinfo; uinfo->mem[0].addr = (unsigned long)udev->uctrl; uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); uinfo->mem[0].memtype = UIO_MEM_LOGICAL; uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; uinfo->mem[1].size = udev->ll2_ring_size; uinfo->mem[1].memtype = UIO_MEM_LOGICAL; uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; uinfo->mem[2].size = udev->ll2_buf_size; uinfo->mem[2].memtype = UIO_MEM_LOGICAL; uinfo->name = "qedi_uio"; uinfo->version = QEDI_MODULE_VERSION; uinfo->irq = UIO_IRQ_CUSTOM; uinfo->open = qedi_uio_open; uinfo->release = qedi_uio_close; if (udev->uio_dev == -1) { if (!uinfo->priv) { uinfo->priv = udev; ret = uio_register_device(&udev->pdev->dev, uinfo); if (ret) { QEDI_ERR(&qedi->dbg_ctx, "UIO registration failed\n"); } } } return ret; } static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, struct qed_sb_info *sb_info, u16 sb_id) { struct status_block_e4 *sb_virt; dma_addr_t sb_phys; int ret; sb_virt = dma_alloc_coherent(&qedi->pdev->dev, sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); if (!sb_virt) { QEDI_ERR(&qedi->dbg_ctx, "Status block allocation failed for id = %d.\n", sb_id); return -ENOMEM; } ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, sb_id, QED_SB_TYPE_STORAGE); if (ret) { QEDI_ERR(&qedi->dbg_ctx, "Status block initialization failed for id = %d.\n", sb_id); return ret; } return 0; } static void qedi_free_sb(struct qedi_ctx *qedi) { struct qed_sb_info *sb_info; int id; for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { sb_info = &qedi->sb_array[id]; if (sb_info->sb_virt) dma_free_coherent(&qedi->pdev->dev, sizeof(*sb_info->sb_virt), (void *)sb_info->sb_virt, sb_info->sb_phys); } } static void qedi_free_fp(struct qedi_ctx *qedi) { kfree(qedi->fp_array); kfree(qedi->sb_array); } static void qedi_destroy_fp(struct qedi_ctx *qedi) { qedi_free_sb(qedi); qedi_free_fp(qedi); } static int qedi_alloc_fp(struct qedi_ctx *qedi) { int ret = 0; qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), sizeof(struct qedi_fastpath), GFP_KERNEL); if (!qedi->fp_array) { QEDI_ERR(&qedi->dbg_ctx, "fastpath fp array allocation failed.\n"); return -ENOMEM; } qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), sizeof(struct qed_sb_info), GFP_KERNEL); if (!qedi->sb_array) { QEDI_ERR(&qedi->dbg_ctx, "fastpath sb array allocation failed.\n"); ret = -ENOMEM; goto free_fp; } return ret; free_fp: qedi_free_fp(qedi); return ret; } static void qedi_int_fp(struct qedi_ctx *qedi) { struct qedi_fastpath *fp; int id; memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * sizeof(*qedi->fp_array)); memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * sizeof(*qedi->sb_array)); for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { fp = &qedi->fp_array[id]; fp->sb_info = &qedi->sb_array[id]; fp->sb_id = id; fp->qedi = qedi; snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", "qedi", id); /* fp_array[i] ---- irq cookie * So init data which is needed in int ctx */ } } static int qedi_prepare_fp(struct qedi_ctx *qedi) { struct qedi_fastpath *fp; int id, ret = 0; ret = qedi_alloc_fp(qedi); if (ret) goto err; qedi_int_fp(qedi); for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { fp = &qedi->fp_array[id]; ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); if (ret) { QEDI_ERR(&qedi->dbg_ctx, "SB allocation and initialization failed.\n"); ret = -EIO; goto err_init; } } return 0; err_init: qedi_free_sb(qedi); qedi_free_fp(qedi); err: return ret; } static int qedi_setup_cid_que(struct qedi_ctx *qedi) { int i; qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, sizeof(u32), GFP_KERNEL); if (!qedi->cid_que.cid_que_base) return -ENOMEM; qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, sizeof(struct qedi_conn *), GFP_KERNEL); if (!qedi->cid_que.conn_cid_tbl) { kfree(qedi->cid_que.cid_que_base); qedi->cid_que.cid_que_base = NULL; return -ENOMEM; } qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; qedi->cid_que.cid_q_prod_idx = 0; qedi->cid_que.cid_q_cons_idx = 0; qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; qedi->cid_que.cid_free_cnt = qedi->max_active_conns; for (i = 0; i < qedi->max_active_conns; i++) { qedi->cid_que.cid_que[i] = i; qedi->cid_que.conn_cid_tbl[i] = NULL; } return 0; } static void qedi_release_cid_que(struct qedi_ctx *qedi) { kfree(qedi->cid_que.cid_que_base); qedi->cid_que.cid_que_base = NULL; kfree(qedi->cid_que.conn_cid_tbl); qedi->cid_que.conn_cid_tbl = NULL; } static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, u16 start_id, u16 next) { id_tbl->start = start_id; id_tbl->max = size; id_tbl->next = next; spin_lock_init(&id_tbl->lock); id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); if (!id_tbl->table) return -ENOMEM; return 0; } static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) { kfree(id_tbl->table); id_tbl->table = NULL; } int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) { int ret = -1; id -= id_tbl->start; if (id >= id_tbl->max) return ret; spin_lock(&id_tbl->lock); if (!test_bit(id, id_tbl->table)) { set_bit(id, id_tbl->table); ret = 0; } spin_unlock(&id_tbl->lock); return ret; } u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) { u16 id; spin_lock(&id_tbl->lock); id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); if (id >= id_tbl->max) { id = QEDI_LOCAL_PORT_INVALID; if (id_tbl->next != 0) { id = find_first_zero_bit(id_tbl->table, id_tbl->next); if (id >= id_tbl->next) id = QEDI_LOCAL_PORT_INVALID; } } if (id < id_tbl->max) { set_bit(id, id_tbl->table); id_tbl->next = (id + 1) & (id_tbl->max - 1); id += id_tbl->start; } spin_unlock(&id_tbl->lock); return id; } void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) { if (id == QEDI_LOCAL_PORT_INVALID) return; id -= id_tbl->start; if (id >= id_tbl->max) return; clear_bit(id, id_tbl->table); } static void qedi_cm_free_mem(struct qedi_ctx *qedi) { kfree(qedi->ep_tbl); qedi->ep_tbl = NULL; qedi_free_id_tbl(&qedi->lcl_port_tbl); } static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) { u16 port_id; qedi->ep_tbl = kzalloc((qedi->max_active_conns * sizeof(struct qedi_endpoint *)), GFP_KERNEL); if (!qedi->ep_tbl) return -ENOMEM; port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, QEDI_LOCAL_PORT_MIN, port_id)) { qedi_cm_free_mem(qedi); return -ENOMEM; } return 0; } static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) { struct Scsi_Host *shost; struct qedi_ctx *qedi = NULL; shost = iscsi_host_alloc(&qedi_host_template, sizeof(struct qedi_ctx), 0); if (!shost) { QEDI_ERR(NULL, "Could not allocate shost\n"); goto exit_setup_shost; } shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA; shost->max_channel = 0; shost->max_lun = ~0; shost->max_cmd_len = 16; shost->transportt = qedi_scsi_transport; qedi = iscsi_host_priv(shost); memset(qedi, 0, sizeof(*qedi)); qedi->shost = shost; qedi->dbg_ctx.host_no = shost->host_no; qedi->pdev = pdev; qedi->dbg_ctx.pdev = pdev; qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; qedi->max_sqes = QEDI_SQ_SIZE; if (shost_use_blk_mq(shost)) shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); pci_set_drvdata(pdev, qedi); exit_setup_shost: return qedi; } static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) { struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; struct qedi_uio_dev *udev; struct qedi_uio_ctrl *uctrl; struct skb_work_list *work; u32 prod; if (!qedi) { QEDI_ERR(NULL, "qedi is NULL\n"); return -1; } if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, "UIO DEV is not opened\n"); kfree_skb(skb); return 0; } udev = qedi->udev; uctrl = udev->uctrl; work = kzalloc(sizeof(*work), GFP_ATOMIC); if (!work) { QEDI_WARN(&qedi->dbg_ctx, "Could not allocate work so dropping frame.\n"); kfree_skb(skb); return 0; } INIT_LIST_HEAD(&work->list); work->skb = skb; if (skb_vlan_tag_present(skb)) work->vlan_id = skb_vlan_tag_get(skb); if (work->vlan_id) __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); spin_lock_bh(&qedi->ll2_lock); list_add_tail(&work->list, &qedi->ll2_skb_list); ++uctrl->hw_rx_prod_cnt; prod = (uctrl->hw_rx_prod + 1) % RX_RING; if (prod != uctrl->host_rx_cons) { uctrl->hw_rx_prod = prod; spin_unlock_bh(&qedi->ll2_lock); wake_up_process(qedi->ll2_recv_thread); return 0; } spin_unlock_bh(&qedi->ll2_lock); return 0; } /* map this skb to iscsiuio mmaped region */ static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, u16 vlan_id) { struct qedi_uio_dev *udev = NULL; struct qedi_uio_ctrl *uctrl = NULL; struct qedi_rx_bd rxbd; struct qedi_rx_bd *p_rxbd; u32 rx_bd_prod; void *pkt; int len = 0; if (!qedi) { QEDI_ERR(NULL, "qedi is NULL\n"); return -1; } udev = qedi->udev; uctrl = udev->uctrl; pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE); len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE); memcpy(pkt, skb->data, len); memset(&rxbd, 0, sizeof(rxbd)); rxbd.rx_pkt_index = uctrl->hw_rx_prod; rxbd.rx_pkt_len = len; rxbd.vlan_id = vlan_id; uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; rx_bd_prod = uctrl->hw_rx_bd_prod; p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; p_rxbd += rx_bd_prod; memcpy(p_rxbd, &rxbd, sizeof(rxbd)); /* notify the iscsiuio about new packet */ uio_event_notify(&udev->qedi_uinfo); return 0; } static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) { struct skb_work_list *work, *work_tmp; spin_lock_bh(&qedi->ll2_lock); list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { list_del(&work->list); if (work->skb) kfree_skb(work->skb); kfree(work); } spin_unlock_bh(&qedi->ll2_lock); } static int qedi_ll2_recv_thread(void *arg) { struct qedi_ctx *qedi = (struct qedi_ctx *)arg; struct skb_work_list *work, *work_tmp; set_user_nice(current, -20); while (!kthread_should_stop()) { spin_lock_bh(&qedi->ll2_lock); list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { list_del(&work->list); qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); kfree_skb(work->skb); kfree(work); } set_current_state(TASK_INTERRUPTIBLE); spin_unlock_bh(&qedi->ll2_lock); schedule(); } __set_current_state(TASK_RUNNING); return 0; } static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) { u8 num_sq_pages; u32 log_page_size; int rval = 0; num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Number of CQ count is %d\n", qedi->num_queues); memset(&qedi->pf_params.iscsi_pf_params, 0, sizeof(qedi->pf_params.iscsi_pf_params)); qedi->p_cpuq = pci_alloc_consistent(qedi->pdev, qedi->num_queues * sizeof(struct qedi_glbl_q_params), &qedi->hw_p_cpuq); if (!qedi->p_cpuq) { QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n"); rval = -1; goto err_alloc_mem; } rval = qedi_alloc_global_queues(qedi); if (rval) { QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); rval = -1; goto err_alloc_mem; } qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000; qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { if ((1 << log_page_size) == PAGE_SIZE) break; } qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = (u64)qedi->hw_p_cpuq; /* RQ BDQ initializations. * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) * rqe_log_size: 8 for 256B RQE */ qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; /* BDQ address and size */ qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = qedi->bdq_pbl_list_dma; qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = qedi->bdq_pbl_list_num_entries; qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; /* cq_num_entries: num_tasks + rq_num_entries */ qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; err_alloc_mem: return rval; } /* Free DMA coherent memory for array of queue pointers we pass to qed */ static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) { size_t size = 0; if (qedi->p_cpuq) { size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); pci_free_consistent(qedi->pdev, size, qedi->p_cpuq, qedi->hw_p_cpuq); } qedi_free_global_queues(qedi); kfree(qedi->global_queues); } static void qedi_link_update(void *dev, struct qed_link_output *link) { struct qedi_ctx *qedi = (struct qedi_ctx *)dev; if (link->link_up) { QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); atomic_set(&qedi->link_state, QEDI_LINK_UP); } else { QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Down event.\n"); atomic_set(&qedi->link_state, QEDI_LINK_DOWN); } } static struct qed_iscsi_cb_ops qedi_cb_ops = { { .link_update = qedi_link_update, } }; static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, u16 que_idx, struct qedi_percpu_s *p) { struct qedi_work *qedi_work; struct qedi_conn *q_conn; struct iscsi_conn *conn; struct qedi_cmd *qedi_cmd; u32 iscsi_cid; int rc = 0; iscsi_cid = cqe->cqe_common.conn_id; q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; if (!q_conn) { QEDI_WARN(&qedi->dbg_ctx, "Session no longer exists for cid=0x%x!!\n", iscsi_cid); return -1; } conn = q_conn->cls_conn->dd_data; switch (cqe->cqe_common.cqe_type) { case ISCSI_CQE_TYPE_SOLICITED: case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); if (!qedi_cmd) { rc = -1; break; } INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); qedi_cmd->cqe_work.qedi = qedi; memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); qedi_cmd->cqe_work.que_idx = que_idx; qedi_cmd->cqe_work.is_solicited = true; list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); break; case ISCSI_CQE_TYPE_UNSOLICITED: case ISCSI_CQE_TYPE_DUMMY: case ISCSI_CQE_TYPE_TASK_CLEANUP: qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); if (!qedi_work) { rc = -1; break; } INIT_LIST_HEAD(&qedi_work->list); qedi_work->qedi = qedi; memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); qedi_work->que_idx = que_idx; qedi_work->is_solicited = false; list_add_tail(&qedi_work->list, &p->work_list); break; default: rc = -1; QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); } return rc; } static bool qedi_process_completions(struct qedi_fastpath *fp) { struct qedi_ctx *qedi = fp->qedi; struct qed_sb_info *sb_info = fp->sb_info; struct status_block_e4 *sb = sb_info->sb_virt; struct qedi_percpu_s *p = NULL; struct global_queue *que; u16 prod_idx; unsigned long flags; union iscsi_cqe *cqe; int cpu; int ret; /* Get the current firmware producer index */ prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; if (prod_idx >= QEDI_CQ_SIZE) prod_idx = prod_idx % QEDI_CQ_SIZE; que = qedi->global_queues[fp->sb_id]; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", que, prod_idx, que->cq_cons_idx, fp->sb_id); qedi->intr_cpu = fp->sb_id; cpu = smp_processor_id(); p = &per_cpu(qedi_percpu, cpu); if (unlikely(!p->iothread)) WARN_ON(1); spin_lock_irqsave(&p->p_work_lock, flags); while (que->cq_cons_idx != prod_idx) { cqe = &que->cq[que->cq_cons_idx]; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "cqe=%p prod_idx=%d cons_idx=%d.\n", cqe, prod_idx, que->cq_cons_idx); ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); if (ret) QEDI_WARN(&qedi->dbg_ctx, "Dropping CQE 0x%x for cid=0x%x.\n", que->cq_cons_idx, cqe->cqe_common.conn_id); que->cq_cons_idx++; if (que->cq_cons_idx == QEDI_CQ_SIZE) que->cq_cons_idx = 0; } wake_up_process(p->iothread); spin_unlock_irqrestore(&p->p_work_lock, flags); return true; } static bool qedi_fp_has_work(struct qedi_fastpath *fp) { struct qedi_ctx *qedi = fp->qedi; struct global_queue *que; struct qed_sb_info *sb_info = fp->sb_info; struct status_block_e4 *sb = sb_info->sb_virt; u16 prod_idx; barrier(); /* Get the current firmware producer index */ prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; /* Get the pointer to the global CQ this completion is on */ que = qedi->global_queues[fp->sb_id]; /* prod idx wrap around uint16 */ if (prod_idx >= QEDI_CQ_SIZE) prod_idx = prod_idx % QEDI_CQ_SIZE; return (que->cq_cons_idx != prod_idx); } /* MSI-X fastpath handler code */ static irqreturn_t qedi_msix_handler(int irq, void *dev_id) { struct qedi_fastpath *fp = dev_id; struct qedi_ctx *qedi = fp->qedi; bool wake_io_thread = true; qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); process_again: wake_io_thread = qedi_process_completions(fp); if (wake_io_thread) { QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "process already running\n"); } if (qedi_fp_has_work(fp) == 0) qed_sb_update_sb_idx(fp->sb_info); /* Check for more work */ rmb(); if (qedi_fp_has_work(fp) == 0) qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); else goto process_again; return IRQ_HANDLED; } /* simd handler for MSI/INTa */ static void qedi_simd_int_handler(void *cookie) { /* Cookie is qedi_ctx struct */ struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); } #define QEDI_SIMD_HANDLER_NUM 0 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) { int i; if (qedi->int_info.msix_cnt) { for (i = 0; i < qedi->int_info.used_cnt; i++) { synchronize_irq(qedi->int_info.msix[i].vector); irq_set_affinity_hint(qedi->int_info.msix[i].vector, NULL); free_irq(qedi->int_info.msix[i].vector, &qedi->fp_array[i]); } } else { qedi_ops->common->simd_handler_clean(qedi->cdev, QEDI_SIMD_HANDLER_NUM); } qedi->int_info.used_cnt = 0; qedi_ops->common->set_fp_int(qedi->cdev, 0); } static int qedi_request_msix_irq(struct qedi_ctx *qedi) { int i, rc, cpu; cpu = cpumask_first(cpu_online_mask); for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) { rc = request_irq(qedi->int_info.msix[i].vector, qedi_msix_handler, 0, "qedi", &qedi->fp_array[i]); if (rc) { QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); qedi_sync_free_irqs(qedi); return rc; } qedi->int_info.used_cnt++; rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, get_cpu_mask(cpu)); cpu = cpumask_next(cpu, cpu_online_mask); } return 0; } static int qedi_setup_int(struct qedi_ctx *qedi) { int rc = 0; rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); if (rc) goto exit_setup_int; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", qedi->int_info.msix_cnt, num_online_cpus()); if (qedi->int_info.msix_cnt) { rc = qedi_request_msix_irq(qedi); goto exit_setup_int; } else { qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, QEDI_SIMD_HANDLER_NUM, qedi_simd_int_handler); qedi->int_info.used_cnt = 1; } exit_setup_int: return rc; } static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) { if (qedi->iscsi_cfg) dma_free_coherent(&qedi->pdev->dev, sizeof(struct nvm_iscsi_cfg), qedi->iscsi_cfg, qedi->nvm_buf_dma); } static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) { qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev, sizeof(struct nvm_iscsi_cfg), &qedi->nvm_buf_dma, GFP_KERNEL); if (!qedi->iscsi_cfg) { QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); return -ENOMEM; } QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg, qedi->nvm_buf_dma); return 0; } static void qedi_free_bdq(struct qedi_ctx *qedi) { int i; if (qedi->bdq_pbl_list) dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE, qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); if (qedi->bdq_pbl) dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, qedi->bdq_pbl, qedi->bdq_pbl_dma); for (i = 0; i < QEDI_BDQ_NUM; i++) { if (qedi->bdq[i].buf_addr) { dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, qedi->bdq[i].buf_addr, qedi->bdq[i].buf_dma); } } } static void qedi_free_global_queues(struct qedi_ctx *qedi) { int i; struct global_queue **gl = qedi->global_queues; for (i = 0; i < qedi->num_queues; i++) { if (!gl[i]) continue; if (gl[i]->cq) dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); if (gl[i]->cq_pbl) dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, gl[i]->cq_pbl, gl[i]->cq_pbl_dma); kfree(gl[i]); } qedi_free_bdq(qedi); qedi_free_nvm_iscsi_cfg(qedi); } static int qedi_alloc_bdq(struct qedi_ctx *qedi) { int i; struct scsi_bd *pbl; u64 *list; dma_addr_t page; /* Alloc dma memory for BDQ buffers */ for (i = 0; i < QEDI_BDQ_NUM; i++) { qedi->bdq[i].buf_addr = dma_alloc_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, &qedi->bdq[i].buf_dma, GFP_KERNEL); if (!qedi->bdq[i].buf_addr) { QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ buffer %d.\n", i); return -ENOMEM; } } /* Alloc dma memory for BDQ page buffer list */ qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE); qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", qedi->rq_num_entries); qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, &qedi->bdq_pbl_dma, GFP_KERNEL); if (!qedi->bdq_pbl) { QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); return -ENOMEM; } /* * Populate BDQ PBL with physical and virtual address of individual * BDQ buffers */ pbl = (struct scsi_bd *)qedi->bdq_pbl; for (i = 0; i < QEDI_BDQ_NUM; i++) { pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", pbl, pbl->address.hi, pbl->address.lo, i); pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); pbl++; } /* Allocate list of PBL pages */ qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev, PAGE_SIZE, &qedi->bdq_pbl_list_dma, GFP_KERNEL); if (!qedi->bdq_pbl_list) { QEDI_ERR(&qedi->dbg_ctx, "Could not allocate list of PBL pages.\n"); return -ENOMEM; } /* * Now populate PBL list with pages that contain pointers to the * individual buffers. */ qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE; list = (u64 *)qedi->bdq_pbl_list; page = qedi->bdq_pbl_list_dma; for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { *list = qedi->bdq_pbl_dma; list++; page += PAGE_SIZE; } return 0; } static int qedi_alloc_global_queues(struct qedi_ctx *qedi) { u32 *list; int i; int status = 0, rc; u32 *pbl; dma_addr_t page; int num_pages; /* * Number of global queues (CQ / RQ). This should * be <= number of available MSIX vectors for the PF */ if (!qedi->num_queues) { QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); return 1; } /* Make sure we allocated the PBL that will contain the physical * addresses of our queues */ if (!qedi->p_cpuq) { status = 1; goto mem_alloc_failure; } qedi->global_queues = kzalloc((sizeof(struct global_queue *) * qedi->num_queues), GFP_KERNEL); if (!qedi->global_queues) { QEDI_ERR(&qedi->dbg_ctx, "Unable to allocate global queues array ptr memory\n"); return -ENOMEM; } QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "qedi->global_queues=%p.\n", qedi->global_queues); /* Allocate DMA coherent buffers for BDQ */ rc = qedi_alloc_bdq(qedi); if (rc) goto mem_alloc_failure; /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ rc = qedi_alloc_nvm_iscsi_cfg(qedi); if (rc) goto mem_alloc_failure; /* Allocate a CQ and an associated PBL for each MSI-X * vector. */ for (i = 0; i < qedi->num_queues; i++) { qedi->global_queues[i] = kzalloc(sizeof(*qedi->global_queues[0]), GFP_KERNEL); if (!qedi->global_queues[i]) { QEDI_ERR(&qedi->dbg_ctx, "Unable to allocation global queue %d.\n", i); goto mem_alloc_failure; } qedi->global_queues[i]->cq_mem_size = (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); qedi->global_queues[i]->cq_mem_size = (qedi->global_queues[i]->cq_mem_size + (QEDI_PAGE_SIZE - 1)); qedi->global_queues[i]->cq_pbl_size = (qedi->global_queues[i]->cq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); qedi->global_queues[i]->cq_pbl_size = (qedi->global_queues[i]->cq_pbl_size + (QEDI_PAGE_SIZE - 1)); qedi->global_queues[i]->cq = dma_zalloc_coherent(&qedi->pdev->dev, qedi->global_queues[i]->cq_mem_size, &qedi->global_queues[i]->cq_dma, GFP_KERNEL); if (!qedi->global_queues[i]->cq) { QEDI_WARN(&qedi->dbg_ctx, "Could not allocate cq.\n"); status = -ENOMEM; goto mem_alloc_failure; } qedi->global_queues[i]->cq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, qedi->global_queues[i]->cq_pbl_size, &qedi->global_queues[i]->cq_pbl_dma, GFP_KERNEL); if (!qedi->global_queues[i]->cq_pbl) { QEDI_WARN(&qedi->dbg_ctx, "Could not allocate cq PBL.\n"); status = -ENOMEM; goto mem_alloc_failure; } /* Create PBL */ num_pages = qedi->global_queues[i]->cq_mem_size / QEDI_PAGE_SIZE; page = qedi->global_queues[i]->cq_dma; pbl = (u32 *)qedi->global_queues[i]->cq_pbl; while (num_pages--) { *pbl = (u32)page; pbl++; *pbl = (u32)((u64)page >> 32); pbl++; page += QEDI_PAGE_SIZE; } } list = (u32 *)qedi->p_cpuq; /* * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points * to the physical address which contains an array of pointers to the * physical addresses of the specific queue pages. */ for (i = 0; i < qedi->num_queues; i++) { *list = (u32)qedi->global_queues[i]->cq_pbl_dma; list++; *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); list++; *list = (u32)0; list++; *list = (u32)((u64)0 >> 32); list++; } return 0; mem_alloc_failure: qedi_free_global_queues(qedi); return status; } int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) { int rval = 0; u32 *pbl; dma_addr_t page; int num_pages; if (!ep) return -EIO; /* Calculate appropriate queue and PBL sizes */ ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); ep->sq_mem_size += QEDI_PAGE_SIZE - 1; ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; ep->sq = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, &ep->sq_dma, GFP_KERNEL); if (!ep->sq) { QEDI_WARN(&qedi->dbg_ctx, "Could not allocate send queue.\n"); rval = -ENOMEM; goto out; } ep->sq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, &ep->sq_pbl_dma, GFP_KERNEL); if (!ep->sq_pbl) { QEDI_WARN(&qedi->dbg_ctx, "Could not allocate send queue PBL.\n"); rval = -ENOMEM; goto out_free_sq; } /* Create PBL */ num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; page = ep->sq_dma; pbl = (u32 *)ep->sq_pbl; while (num_pages--) { *pbl = (u32)page; pbl++; *pbl = (u32)((u64)page >> 32); pbl++; page += QEDI_PAGE_SIZE; } return rval; out_free_sq: dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, ep->sq_dma); out: return rval; } void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) { if (ep->sq_pbl) dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, ep->sq_pbl_dma); if (ep->sq) dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, ep->sq_dma); } int qedi_get_task_idx(struct qedi_ctx *qedi) { s16 tmp_idx; again: tmp_idx = find_first_zero_bit(qedi->task_idx_map, MAX_ISCSI_TASK_ENTRIES); if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); tmp_idx = -1; goto err_idx; } if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) goto again; err_idx: return tmp_idx; } void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) { if (!test_and_clear_bit(idx, qedi->task_idx_map)) QEDI_ERR(&qedi->dbg_ctx, "FW task context, already cleared, tid=0x%x\n", idx); } void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, struct qedi_cmd *cmd) { qedi->itt_map[tid].itt = proto_itt; qedi->itt_map[tid].p_cmd = cmd; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "update itt map tid=0x%x, with proto itt=0x%x\n", tid, qedi->itt_map[tid].itt); } void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) { u16 i; for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { if (qedi->itt_map[i].itt == itt) { *tid = i; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "Ref itt=0x%x, found at tid=0x%x\n", itt, *tid); return; } } WARN_ON(1); } void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) { *proto_itt = qedi->itt_map[tid].itt; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "Get itt map tid [0x%x with proto itt[0x%x]", tid, *proto_itt); } struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) { struct qedi_cmd *cmd = NULL; if (tid >= MAX_ISCSI_TASK_ENTRIES) return NULL; cmd = qedi->itt_map[tid].p_cmd; if (cmd->task_id != tid) return NULL; qedi->itt_map[tid].p_cmd = NULL; return cmd; } static int qedi_alloc_itt(struct qedi_ctx *qedi) { qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, sizeof(struct qedi_itt_map), GFP_KERNEL); if (!qedi->itt_map) { QEDI_ERR(&qedi->dbg_ctx, "Unable to allocate itt map array memory\n"); return -ENOMEM; } return 0; } static void qedi_free_itt(struct qedi_ctx *qedi) { kfree(qedi->itt_map); } static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { .rx_cb = qedi_ll2_rx, .tx_cb = NULL, }; static int qedi_percpu_io_thread(void *arg) { struct qedi_percpu_s *p = arg; struct qedi_work *work, *tmp; unsigned long flags; LIST_HEAD(work_list); set_user_nice(current, -20); while (!kthread_should_stop()) { spin_lock_irqsave(&p->p_work_lock, flags); while (!list_empty(&p->work_list)) { list_splice_init(&p->work_list, &work_list); spin_unlock_irqrestore(&p->p_work_lock, flags); list_for_each_entry_safe(work, tmp, &work_list, list) { list_del_init(&work->list); qedi_fp_process_cqes(work); if (!work->is_solicited) kfree(work); } cond_resched(); spin_lock_irqsave(&p->p_work_lock, flags); } set_current_state(TASK_INTERRUPTIBLE); spin_unlock_irqrestore(&p->p_work_lock, flags); schedule(); } __set_current_state(TASK_RUNNING); return 0; } static int qedi_cpu_online(unsigned int cpu) { struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); struct task_struct *thread; thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, cpu_to_node(cpu), "qedi_thread/%d", cpu); if (IS_ERR(thread)) return PTR_ERR(thread); kthread_bind(thread, cpu); p->iothread = thread; wake_up_process(thread); return 0; } static int qedi_cpu_offline(unsigned int cpu) { struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); struct qedi_work *work, *tmp; struct task_struct *thread; spin_lock_bh(&p->p_work_lock); thread = p->iothread; p->iothread = NULL; list_for_each_entry_safe(work, tmp, &p->work_list, list) { list_del_init(&work->list); qedi_fp_process_cqes(work); if (!work->is_solicited) kfree(work); } spin_unlock_bh(&p->p_work_lock); if (thread) kthread_stop(thread); return 0; } void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) { struct qed_ll2_params params; qedi_recover_all_conns(qedi); qedi_ops->ll2->stop(qedi->cdev); qedi_ll2_free_skbs(qedi); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", qedi->ll2_mtu, mtu); memset(¶ms, 0, sizeof(params)); qedi->ll2_mtu = mtu; params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; params.drop_ttl0_packets = 0; params.rx_vlan_stripping = 1; ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); qedi_ops->ll2->start(qedi->cdev, ¶ms); } /** * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting * for gaps) for the matching absolute-pf-id of the QEDI device. */ static struct nvm_iscsi_block * qedi_get_nvram_block(struct qedi_ctx *qedi) { int i; u8 pf; u32 flags; struct nvm_iscsi_block *block; pf = qedi->dev_info.common.abs_pf_id; block = &qedi->iscsi_cfg->block[0]; for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) return block; } return NULL; } static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) { struct qedi_ctx *qedi = data; struct nvm_iscsi_initiator *initiator; int rc = 1; u32 ipv6_en, dhcp_en, ip_len; struct nvm_iscsi_block *block; char *fmt, *ip, *sub, *gw; block = qedi_get_nvram_block(qedi); if (!block) return 0; initiator = &block->initiator; ipv6_en = block->generic.ctrl_flags & NVM_ISCSI_CFG_GEN_IPV6_ENABLED; dhcp_en = block->generic.ctrl_flags & NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; /* Static IP assignments. */ fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : initiator->ipv4.subnet_mask.byte; gw = ipv6_en ? initiator->ipv6.gateway.byte : initiator->ipv4.gateway.byte; /* DHCP IP adjustments. */ fmt = dhcp_en ? "%s\n" : fmt; if (dhcp_en) { ip = ipv6_en ? "0::0" : "0.0.0.0"; sub = ip; gw = ip; ip_len = ipv6_en ? 5 : 8; } switch (type) { case ISCSI_BOOT_ETH_IP_ADDR: rc = snprintf(buf, ip_len, fmt, ip); break; case ISCSI_BOOT_ETH_SUBNET_MASK: rc = snprintf(buf, ip_len, fmt, sub); break; case ISCSI_BOOT_ETH_GATEWAY: rc = snprintf(buf, ip_len, fmt, gw); break; case ISCSI_BOOT_ETH_FLAGS: rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); break; case ISCSI_BOOT_ETH_INDEX: rc = snprintf(buf, 3, "0\n"); break; case ISCSI_BOOT_ETH_MAC: rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); break; case ISCSI_BOOT_ETH_VLAN: rc = snprintf(buf, 12, "%d\n", GET_FIELD2(initiator->generic_cont0, NVM_ISCSI_CFG_INITIATOR_VLAN)); break; case ISCSI_BOOT_ETH_ORIGIN: if (dhcp_en) rc = snprintf(buf, 3, "3\n"); break; default: rc = 0; break; } return rc; } static umode_t qedi_eth_get_attr_visibility(void *data, int type) { int rc = 1; switch (type) { case ISCSI_BOOT_ETH_FLAGS: case ISCSI_BOOT_ETH_MAC: case ISCSI_BOOT_ETH_INDEX: case ISCSI_BOOT_ETH_IP_ADDR: case ISCSI_BOOT_ETH_SUBNET_MASK: case ISCSI_BOOT_ETH_GATEWAY: case ISCSI_BOOT_ETH_ORIGIN: case ISCSI_BOOT_ETH_VLAN: rc = 0444; break; default: rc = 0; break; } return rc; } static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) { struct qedi_ctx *qedi = data; struct nvm_iscsi_initiator *initiator; int rc; struct nvm_iscsi_block *block; block = qedi_get_nvram_block(qedi); if (!block) return 0; initiator = &block->initiator; switch (type) { case ISCSI_BOOT_INI_INITIATOR_NAME: rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, initiator->initiator_name.byte); break; default: rc = 0; break; } return rc; } static umode_t qedi_ini_get_attr_visibility(void *data, int type) { int rc; switch (type) { case ISCSI_BOOT_INI_INITIATOR_NAME: rc = 0444; break; default: rc = 0; break; } return rc; } static ssize_t qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, char *buf, enum qedi_nvm_tgts idx) { int rc = 1; u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; struct nvm_iscsi_block *block; char *chap_name, *chap_secret; char *mchap_name, *mchap_secret; block = qedi_get_nvram_block(qedi); if (!block) goto exit_show_tgt_info; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, "Port:%d, tgt_idx:%d\n", GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); ctrl_flags = block->target[idx].ctrl_flags & NVM_ISCSI_CFG_TARGET_ENABLED; if (!ctrl_flags) { QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, "Target disabled\n"); goto exit_show_tgt_info; } ipv6_en = block->generic.ctrl_flags & NVM_ISCSI_CFG_GEN_IPV6_ENABLED; ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; chap_en = block->generic.ctrl_flags & NVM_ISCSI_CFG_GEN_CHAP_ENABLED; chap_name = chap_en ? block->initiator.chap_name.byte : NULL; chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; mchap_en = block->generic.ctrl_flags & NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; switch (type) { case ISCSI_BOOT_TGT_NAME: rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, block->target[idx].target_name.byte); break; case ISCSI_BOOT_TGT_IP_ADDR: if (ipv6_en) rc = snprintf(buf, ip_len, "%pI6\n", block->target[idx].ipv6_addr.byte); else rc = snprintf(buf, ip_len, "%pI4\n", block->target[idx].ipv4_addr.byte); break; case ISCSI_BOOT_TGT_PORT: rc = snprintf(buf, 12, "%d\n", GET_FIELD2(block->target[idx].generic_cont0, NVM_ISCSI_CFG_TARGET_TCP_PORT)); break; case ISCSI_BOOT_TGT_LUN: rc = snprintf(buf, 22, "%.*d\n", block->target[idx].lun.value[1], block->target[idx].lun.value[0]); break; case ISCSI_BOOT_TGT_CHAP_NAME: rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, chap_name); break; case ISCSI_BOOT_TGT_CHAP_SECRET: rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, chap_secret); break; case ISCSI_BOOT_TGT_REV_CHAP_NAME: rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, mchap_name); break; case ISCSI_BOOT_TGT_REV_CHAP_SECRET: rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, mchap_secret); break; case ISCSI_BOOT_TGT_FLAGS: rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); break; case ISCSI_BOOT_TGT_NIC_ASSOC: rc = snprintf(buf, 3, "0\n"); break; default: rc = 0; break; } exit_show_tgt_info: return rc; } static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) { struct qedi_ctx *qedi = data; return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); } static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) { struct qedi_ctx *qedi = data; return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); } static umode_t qedi_tgt_get_attr_visibility(void *data, int type) { int rc; switch (type) { case ISCSI_BOOT_TGT_NAME: case ISCSI_BOOT_TGT_IP_ADDR: case ISCSI_BOOT_TGT_PORT: case ISCSI_BOOT_TGT_LUN: case ISCSI_BOOT_TGT_CHAP_NAME: case ISCSI_BOOT_TGT_CHAP_SECRET: case ISCSI_BOOT_TGT_REV_CHAP_NAME: case ISCSI_BOOT_TGT_REV_CHAP_SECRET: case ISCSI_BOOT_TGT_NIC_ASSOC: case ISCSI_BOOT_TGT_FLAGS: rc = 0444; break; default: rc = 0; break; } return rc; } static void qedi_boot_release(void *data) { struct qedi_ctx *qedi = data; scsi_host_put(qedi->shost); } static int qedi_get_boot_info(struct qedi_ctx *qedi) { int ret = 1; u16 len; len = sizeof(struct nvm_iscsi_cfg); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Get NVM iSCSI CFG image\n"); ret = qedi_ops->common->nvm_get_image(qedi->cdev, QED_NVM_IMAGE_ISCSI_CFG, (char *)qedi->iscsi_cfg, len); if (ret) QEDI_ERR(&qedi->dbg_ctx, "Could not get NVM image. ret = %d\n", ret); return ret; } static int qedi_setup_boot_info(struct qedi_ctx *qedi) { struct iscsi_boot_kobj *boot_kobj; if (qedi_get_boot_info(qedi)) return -EPERM; qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); if (!qedi->boot_kset) goto kset_free; if (!scsi_host_get(qedi->shost)) goto kset_free; boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, qedi_show_boot_tgt_pri_info, qedi_tgt_get_attr_visibility, qedi_boot_release); if (!boot_kobj) goto put_host; if (!scsi_host_get(qedi->shost)) goto kset_free; boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, qedi_show_boot_tgt_sec_info, qedi_tgt_get_attr_visibility, qedi_boot_release); if (!boot_kobj) goto put_host; if (!scsi_host_get(qedi->shost)) goto kset_free; boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, qedi_show_boot_ini_info, qedi_ini_get_attr_visibility, qedi_boot_release); if (!boot_kobj) goto put_host; if (!scsi_host_get(qedi->shost)) goto kset_free; boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, qedi_show_boot_eth_info, qedi_eth_get_attr_visibility, qedi_boot_release); if (!boot_kobj) goto put_host; return 0; put_host: scsi_host_put(qedi->shost); kset_free: iscsi_boot_destroy_kset(qedi->boot_kset); return -ENOMEM; } static void __qedi_remove(struct pci_dev *pdev, int mode) { struct qedi_ctx *qedi = pci_get_drvdata(pdev); if (qedi->tmf_thread) { flush_workqueue(qedi->tmf_thread); destroy_workqueue(qedi->tmf_thread); qedi->tmf_thread = NULL; } if (qedi->offload_thread) { flush_workqueue(qedi->offload_thread); destroy_workqueue(qedi->offload_thread); qedi->offload_thread = NULL; } #ifdef CONFIG_DEBUG_FS qedi_dbg_host_exit(&qedi->dbg_ctx); #endif if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); qedi_sync_free_irqs(qedi); if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { qedi_ops->stop(qedi->cdev); qedi_ops->ll2->stop(qedi->cdev); } if (mode == QEDI_MODE_NORMAL) qedi_free_iscsi_pf_param(qedi); if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { qedi_ops->common->slowpath_stop(qedi->cdev); qedi_ops->common->remove(qedi->cdev); } qedi_destroy_fp(qedi); if (mode == QEDI_MODE_NORMAL) { qedi_release_cid_que(qedi); qedi_cm_free_mem(qedi); qedi_free_uio(qedi->udev); qedi_free_itt(qedi); iscsi_host_remove(qedi->shost); iscsi_host_free(qedi->shost); if (qedi->ll2_recv_thread) { kthread_stop(qedi->ll2_recv_thread); qedi->ll2_recv_thread = NULL; } qedi_ll2_free_skbs(qedi); if (qedi->boot_kset) iscsi_boot_destroy_kset(qedi->boot_kset); } } static int __qedi_probe(struct pci_dev *pdev, int mode) { struct qedi_ctx *qedi; struct qed_ll2_params params; u32 dp_module = 0; u8 dp_level = 0; bool is_vf = false; char host_buf[16]; struct qed_link_params link_params; struct qed_slowpath_params sp_params; struct qed_probe_params qed_params; void *task_start, *task_end; int rc; u16 tmp; if (mode != QEDI_MODE_RECOVERY) { qedi = qedi_host_alloc(pdev); if (!qedi) { rc = -ENOMEM; goto exit_probe; } } else { qedi = pci_get_drvdata(pdev); } memset(&qed_params, 0, sizeof(qed_params)); qed_params.protocol = QED_PROTOCOL_ISCSI; qed_params.dp_module = dp_module; qed_params.dp_level = dp_level; qed_params.is_vf = is_vf; qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); if (!qedi->cdev) { rc = -ENODEV; QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); goto free_host; } atomic_set(&qedi->link_state, QEDI_LINK_DOWN); rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); if (rc) goto free_host; if (mode != QEDI_MODE_RECOVERY) { rc = qedi_set_iscsi_pf_param(qedi); if (rc) { rc = -ENOMEM; QEDI_ERR(&qedi->dbg_ctx, "Set iSCSI pf param fail\n"); goto free_host; } } qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); rc = qedi_prepare_fp(qedi); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); goto free_pf_params; } /* Start the Slowpath-process */ memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); sp_params.int_mode = QED_INT_MODE_MSIX; sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; sp_params.drv_rev = QEDI_DRIVER_REV_VER; sp_params.drv_eng = QEDI_DRIVER_ENG_VER; strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); goto stop_hw; } /* update_pf_params needs to be called before and after slowpath * start */ qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); rc = qedi_setup_int(qedi); if (rc) goto stop_iscsi_func; qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); /* Learn information crucial for qedi to progress */ rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); if (rc) goto stop_iscsi_func; /* Record BDQ producer doorbell addresses */ qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "BDQ primary_prod=%p secondary_prod=%p.\n", qedi->bdq_primary_prod, qedi->bdq_secondary_prod); /* * We need to write the number of BDs in the BDQ we've preallocated so * the f/w will do a prefetch and we'll get an unsolicited CQE when a * packet arrives. */ qedi->bdq_prod_idx = QEDI_BDQ_NUM; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "Writing %d to primary and secondary BDQ doorbell registers.\n", qedi->bdq_prod_idx); writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); tmp = readw(qedi->bdq_primary_prod); writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); tmp = readw(qedi->bdq_secondary_prod); ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", qedi->mac); sprintf(host_buf, "host_%d", qedi->shost->host_no); qedi_ops->common->set_name(qedi->cdev, host_buf); qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); memset(¶ms, 0, sizeof(params)); params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; qedi->ll2_mtu = DEF_PATH_MTU; params.drop_ttl0_packets = 0; params.rx_vlan_stripping = 1; ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); if (mode != QEDI_MODE_RECOVERY) { /* set up rx path */ INIT_LIST_HEAD(&qedi->ll2_skb_list); spin_lock_init(&qedi->ll2_lock); /* start qedi context */ spin_lock_init(&qedi->hba_lock); spin_lock_init(&qedi->task_idx_lock); } qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); qedi_ops->ll2->start(qedi->cdev, ¶ms); if (mode != QEDI_MODE_RECOVERY) { qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, (void *)qedi, "qedi_ll2_thread"); } rc = qedi_ops->start(qedi->cdev, &qedi->tasks, qedi, qedi_iscsi_event_cb); if (rc) { rc = -ENODEV; QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); goto stop_slowpath; } task_start = qedi_get_task_mem(&qedi->tasks, 0); task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "Task context start=%p, end=%p block_size=%u.\n", task_start, task_end, qedi->tasks.size); memset(&link_params, 0, sizeof(link_params)); link_params.link_up = true; rc = qedi_ops->common->set_link(qedi->cdev, &link_params); if (rc) { QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); atomic_set(&qedi->link_state, QEDI_LINK_DOWN); } #ifdef CONFIG_DEBUG_FS qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops, &qedi_dbg_fops); #endif QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, FW_ENGINEERING_VERSION); if (mode == QEDI_MODE_NORMAL) { if (iscsi_host_add(qedi->shost, &pdev->dev)) { QEDI_ERR(&qedi->dbg_ctx, "Could not add iscsi host\n"); rc = -ENOMEM; goto remove_host; } /* Allocate uio buffers */ rc = qedi_alloc_uio_rings(qedi); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "UIO alloc ring failed err=%d\n", rc); goto remove_host; } rc = qedi_init_uio(qedi); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "UIO init failed, err=%d\n", rc); goto free_uio; } /* host the array on iscsi_conn */ rc = qedi_setup_cid_que(qedi); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "Could not setup cid que\n"); goto free_uio; } rc = qedi_cm_alloc_mem(qedi); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "Could not alloc cm memory\n"); goto free_cid_que; } rc = qedi_alloc_itt(qedi); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "Could not alloc itt memory\n"); goto free_cid_que; } sprintf(host_buf, "host_%d", qedi->shost->host_no); qedi->tmf_thread = create_singlethread_workqueue(host_buf); if (!qedi->tmf_thread) { QEDI_ERR(&qedi->dbg_ctx, "Unable to start tmf thread!\n"); rc = -ENODEV; goto free_cid_que; } sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); qedi->offload_thread = create_workqueue(host_buf); if (!qedi->offload_thread) { QEDI_ERR(&qedi->dbg_ctx, "Unable to start offload thread!\n"); rc = -ENODEV; goto free_cid_que; } /* F/w needs 1st task context memory entry for performance */ set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); atomic_set(&qedi->num_offloads, 0); if (qedi_setup_boot_info(qedi)) QEDI_ERR(&qedi->dbg_ctx, "No iSCSI boot target configured\n"); } return 0; free_cid_que: qedi_release_cid_que(qedi); free_uio: qedi_free_uio(qedi->udev); remove_host: #ifdef CONFIG_DEBUG_FS qedi_dbg_host_exit(&qedi->dbg_ctx); #endif iscsi_host_remove(qedi->shost); stop_iscsi_func: qedi_ops->stop(qedi->cdev); stop_slowpath: qedi_ops->common->slowpath_stop(qedi->cdev); stop_hw: qedi_ops->common->remove(qedi->cdev); free_pf_params: qedi_free_iscsi_pf_param(qedi); free_host: iscsi_host_free(qedi->shost); exit_probe: return rc; } static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) { return __qedi_probe(pdev, QEDI_MODE_NORMAL); } static void qedi_remove(struct pci_dev *pdev) { __qedi_remove(pdev, QEDI_MODE_NORMAL); } static struct pci_device_id qedi_pci_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, { 0 }, }; MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); static enum cpuhp_state qedi_cpuhp_state; static struct pci_driver qedi_pci_driver = { .name = QEDI_MODULE_NAME, .id_table = qedi_pci_tbl, .probe = qedi_probe, .remove = qedi_remove, }; static int __init qedi_init(void) { struct qedi_percpu_s *p; int cpu, rc = 0; qedi_ops = qed_get_iscsi_ops(); if (!qedi_ops) { QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); return -EINVAL; } #ifdef CONFIG_DEBUG_FS qedi_dbg_init("qedi"); #endif qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); if (!qedi_scsi_transport) { QEDI_ERR(NULL, "Could not register qedi transport"); rc = -ENOMEM; goto exit_qedi_init_1; } for_each_possible_cpu(cpu) { p = &per_cpu(qedi_percpu, cpu); INIT_LIST_HEAD(&p->work_list); spin_lock_init(&p->p_work_lock); p->iothread = NULL; } rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", qedi_cpu_online, qedi_cpu_offline); if (rc < 0) goto exit_qedi_init_2; qedi_cpuhp_state = rc; rc = pci_register_driver(&qedi_pci_driver); if (rc) { QEDI_ERR(NULL, "Failed to register driver\n"); goto exit_qedi_hp; } return 0; exit_qedi_hp: cpuhp_remove_state(qedi_cpuhp_state); exit_qedi_init_2: iscsi_unregister_transport(&qedi_iscsi_transport); exit_qedi_init_1: #ifdef CONFIG_DEBUG_FS qedi_dbg_exit(); #endif qed_put_iscsi_ops(); return rc; } static void __exit qedi_cleanup(void) { pci_unregister_driver(&qedi_pci_driver); cpuhp_remove_state(qedi_cpuhp_state); iscsi_unregister_transport(&qedi_iscsi_transport); #ifdef CONFIG_DEBUG_FS qedi_dbg_exit(); #endif qed_put_iscsi_ops(); } MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("QLogic Corporation"); MODULE_VERSION(QEDI_MODULE_VERSION); module_init(qedi_init); module_exit(qedi_cleanup);