2 * QLogic iSCSI Offload Driver
3 * Copyright (c) 2016 Cavium Inc.
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
10 #include <linux/module.h>
11 #include <linux/pci.h>
12 #include <linux/kernel.h>
13 #include <linux/if_arp.h>
14 #include <scsi/iscsi_if.h>
15 #include <linux/inet.h>
17 #include <linux/list.h>
18 #include <linux/kthread.h>
20 #include <linux/if_vlan.h>
21 #include <linux/cpu.h>
22 #include <linux/iscsi_boot_sysfs.h>
24 #include <scsi/scsi_cmnd.h>
25 #include <scsi/scsi_device.h>
26 #include <scsi/scsi_eh.h>
27 #include <scsi/scsi_host.h>
28 #include <scsi/scsi.h>
32 #include "qedi_iscsi.h"
34 static uint qedi_fw_debug;
35 module_param(qedi_fw_debug, uint, 0644);
36 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
38 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
39 module_param(qedi_dbg_log, uint, 0644);
40 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
43 module_param(qedi_io_tracing, uint, 0644);
44 MODULE_PARM_DESC(qedi_io_tracing,
45 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
47 const struct qed_iscsi_ops *qedi_ops;
48 static struct scsi_transport_template *qedi_scsi_transport;
49 static struct pci_driver qedi_pci_driver;
50 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
51 static LIST_HEAD(qedi_udev_list);
52 /* Static function declaration */
53 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
54 static void qedi_free_global_queues(struct qedi_ctx *qedi);
55 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
56 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
57 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
59 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
61 struct qedi_ctx *qedi;
62 struct qedi_endpoint *qedi_ep;
63 struct async_data *data;
66 if (!context || !fw_handle) {
67 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
71 qedi = (struct qedi_ctx *)context;
72 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
73 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
75 data = (struct async_data *)fw_handle;
76 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
77 "cid=0x%x tid=0x%x err-code=0x%x fw-dbg-param=0x%x\n",
78 data->cid, data->itid, data->error_code,
79 data->fw_debug_param);
81 qedi_ep = qedi->ep_tbl[data->cid];
84 QEDI_WARN(&qedi->dbg_ctx,
85 "Cannot process event, ep already disconnected, cid=0x%x\n",
91 switch (fw_event_code) {
92 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
93 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
94 qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
96 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
98 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
99 qedi_ep->state = EP_STATE_DISCONN_COMPL;
100 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
102 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
103 qedi_process_iscsi_error(qedi_ep, data);
105 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
106 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
107 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
108 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
109 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
110 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
111 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
112 qedi_process_tcp_error(qedi_ep, data);
115 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
122 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
124 struct qedi_uio_dev *udev = uinfo->priv;
125 struct qedi_ctx *qedi = udev->qedi;
127 if (!capable(CAP_NET_ADMIN))
130 if (udev->uio_dev != -1)
134 udev->uio_dev = iminor(inode);
135 qedi_reset_uio_rings(udev);
136 set_bit(UIO_DEV_OPENED, &qedi->flags);
142 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
144 struct qedi_uio_dev *udev = uinfo->priv;
145 struct qedi_ctx *qedi = udev->qedi;
148 clear_bit(UIO_DEV_OPENED, &qedi->flags);
149 qedi_ll2_free_skbs(qedi);
153 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
156 free_page((unsigned long)udev->uctrl);
160 if (udev->ll2_ring) {
161 free_page((unsigned long)udev->ll2_ring);
162 udev->ll2_ring = NULL;
166 free_pages((unsigned long)udev->ll2_buf, 2);
167 udev->ll2_buf = NULL;
171 static void __qedi_free_uio(struct qedi_uio_dev *udev)
173 uio_unregister_device(&udev->qedi_uinfo);
175 __qedi_free_uio_rings(udev);
177 pci_dev_put(udev->pdev);
181 static void qedi_free_uio(struct qedi_uio_dev *udev)
186 list_del_init(&udev->list);
187 __qedi_free_uio(udev);
190 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
192 struct qedi_ctx *qedi = NULL;
193 struct qedi_uio_ctrl *uctrl = NULL;
198 spin_lock_bh(&qedi->ll2_lock);
199 uctrl->host_rx_cons = 0;
200 uctrl->hw_rx_prod = 0;
201 uctrl->hw_rx_bd_prod = 0;
202 uctrl->host_rx_bd_cons = 0;
204 memset(udev->ll2_ring, 0, udev->ll2_ring_size);
205 memset(udev->ll2_buf, 0, udev->ll2_buf_size);
206 spin_unlock_bh(&qedi->ll2_lock);
209 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
213 if (udev->ll2_ring || udev->ll2_buf)
216 /* Memory for control area. */
217 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
221 /* Allocating memory for LL2 ring */
222 udev->ll2_ring_size = QEDI_PAGE_SIZE;
223 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
224 if (!udev->ll2_ring) {
226 goto exit_alloc_ring;
229 /* Allocating memory for Tx/Rx pkt buffer */
230 udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE;
231 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
232 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
234 if (!udev->ll2_buf) {
241 free_page((unsigned long)udev->ll2_ring);
242 udev->ll2_ring = NULL;
247 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
249 struct qedi_uio_dev *udev = NULL;
252 list_for_each_entry(udev, &qedi_udev_list, list) {
253 if (udev->pdev == qedi->pdev) {
255 if (__qedi_alloc_uio_rings(udev)) {
264 udev = kzalloc(sizeof(*udev), GFP_KERNEL);
273 udev->pdev = qedi->pdev;
275 rc = __qedi_alloc_uio_rings(udev);
279 list_add(&udev->list, &qedi_udev_list);
281 pci_dev_get(udev->pdev);
284 udev->tx_pkt = udev->ll2_buf;
285 udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE;
294 static int qedi_init_uio(struct qedi_ctx *qedi)
296 struct qedi_uio_dev *udev = qedi->udev;
297 struct uio_info *uinfo;
303 uinfo = &udev->qedi_uinfo;
305 uinfo->mem[0].addr = (unsigned long)udev->uctrl;
306 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
307 uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
309 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
310 uinfo->mem[1].size = udev->ll2_ring_size;
311 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
313 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
314 uinfo->mem[2].size = udev->ll2_buf_size;
315 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
317 uinfo->name = "qedi_uio";
318 uinfo->version = QEDI_MODULE_VERSION;
319 uinfo->irq = UIO_IRQ_CUSTOM;
321 uinfo->open = qedi_uio_open;
322 uinfo->release = qedi_uio_close;
324 if (udev->uio_dev == -1) {
328 ret = uio_register_device(&udev->pdev->dev, uinfo);
330 QEDI_ERR(&qedi->dbg_ctx,
331 "UIO registration failed\n");
339 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
340 struct qed_sb_info *sb_info, u16 sb_id)
342 struct status_block *sb_virt;
346 sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
347 sizeof(struct status_block), &sb_phys,
350 QEDI_ERR(&qedi->dbg_ctx,
351 "Status block allocation failed for id = %d.\n",
356 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
357 sb_id, QED_SB_TYPE_STORAGE);
359 QEDI_ERR(&qedi->dbg_ctx,
360 "Status block initialization failed for id = %d.\n",
368 static void qedi_free_sb(struct qedi_ctx *qedi)
370 struct qed_sb_info *sb_info;
373 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
374 sb_info = &qedi->sb_array[id];
375 if (sb_info->sb_virt)
376 dma_free_coherent(&qedi->pdev->dev,
377 sizeof(*sb_info->sb_virt),
378 (void *)sb_info->sb_virt,
383 static void qedi_free_fp(struct qedi_ctx *qedi)
385 kfree(qedi->fp_array);
386 kfree(qedi->sb_array);
389 static void qedi_destroy_fp(struct qedi_ctx *qedi)
395 static int qedi_alloc_fp(struct qedi_ctx *qedi)
399 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
400 sizeof(struct qedi_fastpath), GFP_KERNEL);
401 if (!qedi->fp_array) {
402 QEDI_ERR(&qedi->dbg_ctx,
403 "fastpath fp array allocation failed.\n");
407 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
408 sizeof(struct qed_sb_info), GFP_KERNEL);
409 if (!qedi->sb_array) {
410 QEDI_ERR(&qedi->dbg_ctx,
411 "fastpath sb array allocation failed.\n");
423 static void qedi_int_fp(struct qedi_ctx *qedi)
425 struct qedi_fastpath *fp;
428 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
429 sizeof(*qedi->fp_array));
430 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
431 sizeof(*qedi->sb_array));
433 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
434 fp = &qedi->fp_array[id];
435 fp->sb_info = &qedi->sb_array[id];
438 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
441 /* fp_array[i] ---- irq cookie
442 * So init data which is needed in int ctx
447 static int qedi_prepare_fp(struct qedi_ctx *qedi)
449 struct qedi_fastpath *fp;
452 ret = qedi_alloc_fp(qedi);
458 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
459 fp = &qedi->fp_array[id];
460 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
462 QEDI_ERR(&qedi->dbg_ctx,
463 "SB allocation and initialization failed.\n");
478 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
482 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
483 sizeof(u32), GFP_KERNEL);
484 if (!qedi->cid_que.cid_que_base)
487 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
488 sizeof(struct qedi_conn *),
490 if (!qedi->cid_que.conn_cid_tbl) {
491 kfree(qedi->cid_que.cid_que_base);
492 qedi->cid_que.cid_que_base = NULL;
496 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
497 qedi->cid_que.cid_q_prod_idx = 0;
498 qedi->cid_que.cid_q_cons_idx = 0;
499 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
500 qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
502 for (i = 0; i < qedi->max_active_conns; i++) {
503 qedi->cid_que.cid_que[i] = i;
504 qedi->cid_que.conn_cid_tbl[i] = NULL;
510 static void qedi_release_cid_que(struct qedi_ctx *qedi)
512 kfree(qedi->cid_que.cid_que_base);
513 qedi->cid_que.cid_que_base = NULL;
515 kfree(qedi->cid_que.conn_cid_tbl);
516 qedi->cid_que.conn_cid_tbl = NULL;
519 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
520 u16 start_id, u16 next)
522 id_tbl->start = start_id;
525 spin_lock_init(&id_tbl->lock);
526 id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
533 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
535 kfree(id_tbl->table);
536 id_tbl->table = NULL;
539 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
544 if (id >= id_tbl->max)
547 spin_lock(&id_tbl->lock);
548 if (!test_bit(id, id_tbl->table)) {
549 set_bit(id, id_tbl->table);
552 spin_unlock(&id_tbl->lock);
556 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
560 spin_lock(&id_tbl->lock);
561 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
562 if (id >= id_tbl->max) {
563 id = QEDI_LOCAL_PORT_INVALID;
564 if (id_tbl->next != 0) {
565 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
566 if (id >= id_tbl->next)
567 id = QEDI_LOCAL_PORT_INVALID;
571 if (id < id_tbl->max) {
572 set_bit(id, id_tbl->table);
573 id_tbl->next = (id + 1) & (id_tbl->max - 1);
577 spin_unlock(&id_tbl->lock);
582 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
584 if (id == QEDI_LOCAL_PORT_INVALID)
588 if (id >= id_tbl->max)
591 clear_bit(id, id_tbl->table);
594 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
598 qedi_free_id_tbl(&qedi->lcl_port_tbl);
601 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
605 qedi->ep_tbl = kzalloc((qedi->max_active_conns *
606 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
609 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
610 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
611 QEDI_LOCAL_PORT_MIN, port_id)) {
612 qedi_cm_free_mem(qedi);
619 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
621 struct Scsi_Host *shost;
622 struct qedi_ctx *qedi = NULL;
624 shost = iscsi_host_alloc(&qedi_host_template,
625 sizeof(struct qedi_ctx), 0);
627 QEDI_ERR(NULL, "Could not allocate shost\n");
628 goto exit_setup_shost;
631 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
632 shost->max_channel = 0;
634 shost->max_cmd_len = 16;
635 shost->transportt = qedi_scsi_transport;
637 qedi = iscsi_host_priv(shost);
638 memset(qedi, 0, sizeof(*qedi));
640 qedi->dbg_ctx.host_no = shost->host_no;
642 qedi->dbg_ctx.pdev = pdev;
643 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
644 qedi->max_sqes = QEDI_SQ_SIZE;
646 if (shost_use_blk_mq(shost))
647 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
649 pci_set_drvdata(pdev, qedi);
655 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
657 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
658 struct qedi_uio_dev *udev;
659 struct qedi_uio_ctrl *uctrl;
660 struct skb_work_list *work;
664 QEDI_ERR(NULL, "qedi is NULL\n");
668 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
669 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
670 "UIO DEV is not opened\n");
678 work = kzalloc(sizeof(*work), GFP_ATOMIC);
680 QEDI_WARN(&qedi->dbg_ctx,
681 "Could not allocate work so dropping frame.\n");
686 INIT_LIST_HEAD(&work->list);
689 if (skb_vlan_tag_present(skb))
690 work->vlan_id = skb_vlan_tag_get(skb);
693 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
695 spin_lock_bh(&qedi->ll2_lock);
696 list_add_tail(&work->list, &qedi->ll2_skb_list);
698 ++uctrl->hw_rx_prod_cnt;
699 prod = (uctrl->hw_rx_prod + 1) % RX_RING;
700 if (prod != uctrl->host_rx_cons) {
701 uctrl->hw_rx_prod = prod;
702 spin_unlock_bh(&qedi->ll2_lock);
703 wake_up_process(qedi->ll2_recv_thread);
707 spin_unlock_bh(&qedi->ll2_lock);
711 /* map this skb to iscsiuio mmaped region */
712 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
715 struct qedi_uio_dev *udev = NULL;
716 struct qedi_uio_ctrl *uctrl = NULL;
717 struct qedi_rx_bd rxbd;
718 struct qedi_rx_bd *p_rxbd;
724 QEDI_ERR(NULL, "qedi is NULL\n");
730 pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE);
731 len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE);
732 memcpy(pkt, skb->data, len);
734 memset(&rxbd, 0, sizeof(rxbd));
735 rxbd.rx_pkt_index = uctrl->hw_rx_prod;
736 rxbd.rx_pkt_len = len;
737 rxbd.vlan_id = vlan_id;
739 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
740 rx_bd_prod = uctrl->hw_rx_bd_prod;
741 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
742 p_rxbd += rx_bd_prod;
744 memcpy(p_rxbd, &rxbd, sizeof(rxbd));
746 /* notify the iscsiuio about new packet */
747 uio_event_notify(&udev->qedi_uinfo);
752 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
754 struct skb_work_list *work, *work_tmp;
756 spin_lock_bh(&qedi->ll2_lock);
757 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
758 list_del(&work->list);
760 kfree_skb(work->skb);
763 spin_unlock_bh(&qedi->ll2_lock);
766 static int qedi_ll2_recv_thread(void *arg)
768 struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
769 struct skb_work_list *work, *work_tmp;
771 set_user_nice(current, -20);
773 while (!kthread_should_stop()) {
774 spin_lock_bh(&qedi->ll2_lock);
775 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
777 list_del(&work->list);
778 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
779 kfree_skb(work->skb);
782 set_current_state(TASK_INTERRUPTIBLE);
783 spin_unlock_bh(&qedi->ll2_lock);
787 __set_current_state(TASK_RUNNING);
791 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
798 num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE;
800 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
802 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
803 "Number of CQ count is %d\n", qedi->num_queues);
805 memset(&qedi->pf_params.iscsi_pf_params, 0,
806 sizeof(qedi->pf_params.iscsi_pf_params));
808 qedi->p_cpuq = pci_alloc_consistent(qedi->pdev,
809 qedi->num_queues * sizeof(struct qedi_glbl_q_params),
812 QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n");
817 rval = qedi_alloc_global_queues(qedi);
819 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
824 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
825 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
826 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
827 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
828 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
829 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
830 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
831 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
832 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
833 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
835 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
836 if ((1 << log_page_size) == PAGE_SIZE)
839 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
841 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
842 (u64)qedi->hw_p_cpuq;
844 /* RQ BDQ initializations.
845 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
846 * rqe_log_size: 8 for 256B RQE
848 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
849 /* BDQ address and size */
850 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
851 qedi->bdq_pbl_list_dma;
852 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
853 qedi->bdq_pbl_list_num_entries;
854 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
856 /* cq_num_entries: num_tasks + rq_num_entries */
857 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
859 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
860 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
861 qedi->pf_params.iscsi_pf_params.ooo_enable = 1;
867 /* Free DMA coherent memory for array of queue pointers we pass to qed */
868 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
873 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
874 pci_free_consistent(qedi->pdev, size, qedi->p_cpuq,
878 qedi_free_global_queues(qedi);
880 kfree(qedi->global_queues);
883 static void qedi_link_update(void *dev, struct qed_link_output *link)
885 struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
888 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
889 atomic_set(&qedi->link_state, QEDI_LINK_UP);
891 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
892 "Link Down event.\n");
893 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
897 static struct qed_iscsi_cb_ops qedi_cb_ops = {
899 .link_update = qedi_link_update,
903 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
904 u16 que_idx, struct qedi_percpu_s *p)
906 struct qedi_work *qedi_work;
907 struct qedi_conn *q_conn;
908 struct iscsi_conn *conn;
909 struct qedi_cmd *qedi_cmd;
913 iscsi_cid = cqe->cqe_common.conn_id;
914 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
916 QEDI_WARN(&qedi->dbg_ctx,
917 "Session no longer exists for cid=0x%x!!\n",
921 conn = q_conn->cls_conn->dd_data;
923 switch (cqe->cqe_common.cqe_type) {
924 case ISCSI_CQE_TYPE_SOLICITED:
925 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
926 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
931 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
932 qedi_cmd->cqe_work.qedi = qedi;
933 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
934 qedi_cmd->cqe_work.que_idx = que_idx;
935 qedi_cmd->cqe_work.is_solicited = true;
936 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
938 case ISCSI_CQE_TYPE_UNSOLICITED:
939 case ISCSI_CQE_TYPE_DUMMY:
940 case ISCSI_CQE_TYPE_TASK_CLEANUP:
941 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
946 INIT_LIST_HEAD(&qedi_work->list);
947 qedi_work->qedi = qedi;
948 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
949 qedi_work->que_idx = que_idx;
950 qedi_work->is_solicited = false;
951 list_add_tail(&qedi_work->list, &p->work_list);
955 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
960 static bool qedi_process_completions(struct qedi_fastpath *fp)
962 struct qedi_ctx *qedi = fp->qedi;
963 struct qed_sb_info *sb_info = fp->sb_info;
964 struct status_block *sb = sb_info->sb_virt;
965 struct qedi_percpu_s *p = NULL;
966 struct global_queue *que;
969 union iscsi_cqe *cqe;
973 /* Get the current firmware producer index */
974 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
976 if (prod_idx >= QEDI_CQ_SIZE)
977 prod_idx = prod_idx % QEDI_CQ_SIZE;
979 que = qedi->global_queues[fp->sb_id];
980 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
981 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
982 que, prod_idx, que->cq_cons_idx, fp->sb_id);
984 qedi->intr_cpu = fp->sb_id;
985 cpu = smp_processor_id();
986 p = &per_cpu(qedi_percpu, cpu);
988 if (unlikely(!p->iothread))
991 spin_lock_irqsave(&p->p_work_lock, flags);
992 while (que->cq_cons_idx != prod_idx) {
993 cqe = &que->cq[que->cq_cons_idx];
995 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
996 "cqe=%p prod_idx=%d cons_idx=%d.\n",
997 cqe, prod_idx, que->cq_cons_idx);
999 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1004 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1005 que->cq_cons_idx = 0;
1007 wake_up_process(p->iothread);
1008 spin_unlock_irqrestore(&p->p_work_lock, flags);
1013 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1015 struct qedi_ctx *qedi = fp->qedi;
1016 struct global_queue *que;
1017 struct qed_sb_info *sb_info = fp->sb_info;
1018 struct status_block *sb = sb_info->sb_virt;
1023 /* Get the current firmware producer index */
1024 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1026 /* Get the pointer to the global CQ this completion is on */
1027 que = qedi->global_queues[fp->sb_id];
1029 /* prod idx wrap around uint16 */
1030 if (prod_idx >= QEDI_CQ_SIZE)
1031 prod_idx = prod_idx % QEDI_CQ_SIZE;
1033 return (que->cq_cons_idx != prod_idx);
1036 /* MSI-X fastpath handler code */
1037 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1039 struct qedi_fastpath *fp = dev_id;
1040 struct qedi_ctx *qedi = fp->qedi;
1041 bool wake_io_thread = true;
1043 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1046 wake_io_thread = qedi_process_completions(fp);
1047 if (wake_io_thread) {
1048 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1049 "process already running\n");
1052 if (qedi_fp_has_work(fp) == 0)
1053 qed_sb_update_sb_idx(fp->sb_info);
1055 /* Check for more work */
1058 if (qedi_fp_has_work(fp) == 0)
1059 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1066 /* simd handler for MSI/INTa */
1067 static void qedi_simd_int_handler(void *cookie)
1069 /* Cookie is qedi_ctx struct */
1070 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1072 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1075 #define QEDI_SIMD_HANDLER_NUM 0
1076 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1080 if (qedi->int_info.msix_cnt) {
1081 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1082 synchronize_irq(qedi->int_info.msix[i].vector);
1083 irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1085 free_irq(qedi->int_info.msix[i].vector,
1086 &qedi->fp_array[i]);
1089 qedi_ops->common->simd_handler_clean(qedi->cdev,
1090 QEDI_SIMD_HANDLER_NUM);
1093 qedi->int_info.used_cnt = 0;
1094 qedi_ops->common->set_fp_int(qedi->cdev, 0);
1097 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1101 cpu = cpumask_first(cpu_online_mask);
1102 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) {
1103 rc = request_irq(qedi->int_info.msix[i].vector,
1104 qedi_msix_handler, 0, "qedi",
1105 &qedi->fp_array[i]);
1108 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1109 qedi_sync_free_irqs(qedi);
1112 qedi->int_info.used_cnt++;
1113 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
1115 cpu = cpumask_next(cpu, cpu_online_mask);
1121 static int qedi_setup_int(struct qedi_ctx *qedi)
1125 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
1126 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1128 goto exit_setup_int;
1130 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1131 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1132 qedi->int_info.msix_cnt, num_online_cpus());
1134 if (qedi->int_info.msix_cnt) {
1135 rc = qedi_request_msix_irq(qedi);
1136 goto exit_setup_int;
1138 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1139 QEDI_SIMD_HANDLER_NUM,
1140 qedi_simd_int_handler);
1141 qedi->int_info.used_cnt = 1;
1148 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1150 if (qedi->iscsi_image)
1151 dma_free_coherent(&qedi->pdev->dev,
1152 sizeof(struct qedi_nvm_iscsi_image),
1153 qedi->iscsi_image, qedi->nvm_buf_dma);
1156 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1158 struct qedi_nvm_iscsi_image nvm_image;
1160 qedi->iscsi_image = dma_zalloc_coherent(&qedi->pdev->dev,
1164 if (!qedi->iscsi_image) {
1165 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1168 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1169 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1175 static void qedi_free_bdq(struct qedi_ctx *qedi)
1179 if (qedi->bdq_pbl_list)
1180 dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE,
1181 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1184 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1185 qedi->bdq_pbl, qedi->bdq_pbl_dma);
1187 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1188 if (qedi->bdq[i].buf_addr) {
1189 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1190 qedi->bdq[i].buf_addr,
1191 qedi->bdq[i].buf_dma);
1196 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1199 struct global_queue **gl = qedi->global_queues;
1201 for (i = 0; i < qedi->num_queues; i++) {
1206 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1207 gl[i]->cq, gl[i]->cq_dma);
1209 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1210 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1214 qedi_free_bdq(qedi);
1215 qedi_free_nvm_iscsi_cfg(qedi);
1218 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1221 struct scsi_bd *pbl;
1225 /* Alloc dma memory for BDQ buffers */
1226 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1227 qedi->bdq[i].buf_addr =
1228 dma_alloc_coherent(&qedi->pdev->dev,
1230 &qedi->bdq[i].buf_dma,
1232 if (!qedi->bdq[i].buf_addr) {
1233 QEDI_ERR(&qedi->dbg_ctx,
1234 "Could not allocate BDQ buffer %d.\n", i);
1239 /* Alloc dma memory for BDQ page buffer list */
1240 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1241 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE);
1242 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1244 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1245 qedi->rq_num_entries);
1247 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1248 qedi->bdq_pbl_mem_size,
1249 &qedi->bdq_pbl_dma, GFP_KERNEL);
1250 if (!qedi->bdq_pbl) {
1251 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1256 * Populate BDQ PBL with physical and virtual address of individual
1259 pbl = (struct scsi_bd *)qedi->bdq_pbl;
1260 for (i = 0; i < QEDI_BDQ_NUM; i++) {
1262 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1264 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1265 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1266 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1267 pbl, pbl->address.hi, pbl->address.lo, i);
1269 pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(i));
1273 /* Allocate list of PBL pages */
1274 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1276 &qedi->bdq_pbl_list_dma,
1278 if (!qedi->bdq_pbl_list) {
1279 QEDI_ERR(&qedi->dbg_ctx,
1280 "Could not allocate list of PBL pages.\n");
1283 memset(qedi->bdq_pbl_list, 0, PAGE_SIZE);
1286 * Now populate PBL list with pages that contain pointers to the
1287 * individual buffers.
1289 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE;
1290 list = (u64 *)qedi->bdq_pbl_list;
1291 page = qedi->bdq_pbl_list_dma;
1292 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1293 *list = qedi->bdq_pbl_dma;
1301 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1311 * Number of global queues (CQ / RQ). This should
1312 * be <= number of available MSIX vectors for the PF
1314 if (!qedi->num_queues) {
1315 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1319 /* Make sure we allocated the PBL that will contain the physical
1320 * addresses of our queues
1322 if (!qedi->p_cpuq) {
1324 goto mem_alloc_failure;
1327 qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1328 qedi->num_queues), GFP_KERNEL);
1329 if (!qedi->global_queues) {
1330 QEDI_ERR(&qedi->dbg_ctx,
1331 "Unable to allocate global queues array ptr memory\n");
1334 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1335 "qedi->global_queues=%p.\n", qedi->global_queues);
1337 /* Allocate DMA coherent buffers for BDQ */
1338 status = qedi_alloc_bdq(qedi);
1340 goto mem_alloc_failure;
1342 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1343 status = qedi_alloc_nvm_iscsi_cfg(qedi);
1345 goto mem_alloc_failure;
1347 /* Allocate a CQ and an associated PBL for each MSI-X
1350 for (i = 0; i < qedi->num_queues; i++) {
1351 qedi->global_queues[i] =
1352 kzalloc(sizeof(*qedi->global_queues[0]),
1354 if (!qedi->global_queues[i]) {
1355 QEDI_ERR(&qedi->dbg_ctx,
1356 "Unable to allocation global queue %d.\n", i);
1358 goto mem_alloc_failure;
1361 qedi->global_queues[i]->cq_mem_size =
1362 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1363 qedi->global_queues[i]->cq_mem_size =
1364 (qedi->global_queues[i]->cq_mem_size +
1365 (QEDI_PAGE_SIZE - 1));
1367 qedi->global_queues[i]->cq_pbl_size =
1368 (qedi->global_queues[i]->cq_mem_size /
1369 QEDI_PAGE_SIZE) * sizeof(void *);
1370 qedi->global_queues[i]->cq_pbl_size =
1371 (qedi->global_queues[i]->cq_pbl_size +
1372 (QEDI_PAGE_SIZE - 1));
1374 qedi->global_queues[i]->cq =
1375 dma_alloc_coherent(&qedi->pdev->dev,
1376 qedi->global_queues[i]->cq_mem_size,
1377 &qedi->global_queues[i]->cq_dma,
1380 if (!qedi->global_queues[i]->cq) {
1381 QEDI_WARN(&qedi->dbg_ctx,
1382 "Could not allocate cq.\n");
1384 goto mem_alloc_failure;
1386 memset(qedi->global_queues[i]->cq, 0,
1387 qedi->global_queues[i]->cq_mem_size);
1389 qedi->global_queues[i]->cq_pbl =
1390 dma_alloc_coherent(&qedi->pdev->dev,
1391 qedi->global_queues[i]->cq_pbl_size,
1392 &qedi->global_queues[i]->cq_pbl_dma,
1395 if (!qedi->global_queues[i]->cq_pbl) {
1396 QEDI_WARN(&qedi->dbg_ctx,
1397 "Could not allocate cq PBL.\n");
1399 goto mem_alloc_failure;
1401 memset(qedi->global_queues[i]->cq_pbl, 0,
1402 qedi->global_queues[i]->cq_pbl_size);
1405 num_pages = qedi->global_queues[i]->cq_mem_size /
1407 page = qedi->global_queues[i]->cq_dma;
1408 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1410 while (num_pages--) {
1413 *pbl = (u32)((u64)page >> 32);
1415 page += QEDI_PAGE_SIZE;
1419 list = (u32 *)qedi->p_cpuq;
1422 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1423 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
1424 * to the physical address which contains an array of pointers to the
1425 * physical addresses of the specific queue pages.
1427 for (i = 0; i < qedi->num_queues; i++) {
1428 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1430 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1435 *list = (u32)((u64)0 >> 32);
1442 qedi_free_global_queues(qedi);
1446 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1456 /* Calculate appropriate queue and PBL sizes */
1457 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1458 ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1460 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1461 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1463 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1464 &ep->sq_dma, GFP_KERNEL);
1466 QEDI_WARN(&qedi->dbg_ctx,
1467 "Could not allocate send queue.\n");
1471 memset(ep->sq, 0, ep->sq_mem_size);
1473 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1474 &ep->sq_pbl_dma, GFP_KERNEL);
1476 QEDI_WARN(&qedi->dbg_ctx,
1477 "Could not allocate send queue PBL.\n");
1481 memset(ep->sq_pbl, 0, ep->sq_pbl_size);
1484 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1486 pbl = (u32 *)ep->sq_pbl;
1488 while (num_pages--) {
1491 *pbl = (u32)((u64)page >> 32);
1493 page += QEDI_PAGE_SIZE;
1499 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1505 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1508 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1511 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1515 int qedi_get_task_idx(struct qedi_ctx *qedi)
1520 tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1521 MAX_ISCSI_TASK_ENTRIES);
1523 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1524 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1529 if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1536 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1538 if (!test_and_clear_bit(idx, qedi->task_idx_map))
1539 QEDI_ERR(&qedi->dbg_ctx,
1540 "FW task context, already cleared, tid=0x%x\n", idx);
1543 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1544 struct qedi_cmd *cmd)
1546 qedi->itt_map[tid].itt = proto_itt;
1547 qedi->itt_map[tid].p_cmd = cmd;
1549 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1550 "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1551 qedi->itt_map[tid].itt);
1554 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1558 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1559 if (qedi->itt_map[i].itt == itt) {
1561 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1562 "Ref itt=0x%x, found at tid=0x%x\n",
1571 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1573 *proto_itt = qedi->itt_map[tid].itt;
1574 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1575 "Get itt map tid [0x%x with proto itt[0x%x]",
1579 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1581 struct qedi_cmd *cmd = NULL;
1583 if (tid >= MAX_ISCSI_TASK_ENTRIES)
1586 cmd = qedi->itt_map[tid].p_cmd;
1587 if (cmd->task_id != tid)
1590 qedi->itt_map[tid].p_cmd = NULL;
1595 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1597 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1598 sizeof(struct qedi_itt_map), GFP_KERNEL);
1599 if (!qedi->itt_map) {
1600 QEDI_ERR(&qedi->dbg_ctx,
1601 "Unable to allocate itt map array memory\n");
1607 static void qedi_free_itt(struct qedi_ctx *qedi)
1609 kfree(qedi->itt_map);
1612 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1613 .rx_cb = qedi_ll2_rx,
1617 static int qedi_percpu_io_thread(void *arg)
1619 struct qedi_percpu_s *p = arg;
1620 struct qedi_work *work, *tmp;
1621 unsigned long flags;
1622 LIST_HEAD(work_list);
1624 set_user_nice(current, -20);
1626 while (!kthread_should_stop()) {
1627 spin_lock_irqsave(&p->p_work_lock, flags);
1628 while (!list_empty(&p->work_list)) {
1629 list_splice_init(&p->work_list, &work_list);
1630 spin_unlock_irqrestore(&p->p_work_lock, flags);
1632 list_for_each_entry_safe(work, tmp, &work_list, list) {
1633 list_del_init(&work->list);
1634 qedi_fp_process_cqes(work);
1635 if (!work->is_solicited)
1639 spin_lock_irqsave(&p->p_work_lock, flags);
1641 set_current_state(TASK_INTERRUPTIBLE);
1642 spin_unlock_irqrestore(&p->p_work_lock, flags);
1645 __set_current_state(TASK_RUNNING);
1650 static int qedi_cpu_online(unsigned int cpu)
1652 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1653 struct task_struct *thread;
1655 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1657 "qedi_thread/%d", cpu);
1659 return PTR_ERR(thread);
1661 kthread_bind(thread, cpu);
1662 p->iothread = thread;
1663 wake_up_process(thread);
1667 static int qedi_cpu_offline(unsigned int cpu)
1669 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1670 struct qedi_work *work, *tmp;
1671 struct task_struct *thread;
1672 unsigned long flags;
1674 spin_lock_irqsave(&p->p_work_lock, flags);
1675 thread = p->iothread;
1678 list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1679 list_del_init(&work->list);
1680 qedi_fp_process_cqes(work);
1681 if (!work->is_solicited)
1685 spin_unlock_irqrestore(&p->p_work_lock, flags);
1687 kthread_stop(thread);
1691 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1693 struct qed_ll2_params params;
1695 qedi_recover_all_conns(qedi);
1697 qedi_ops->ll2->stop(qedi->cdev);
1698 qedi_ll2_free_skbs(qedi);
1700 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
1701 qedi->ll2_mtu, mtu);
1702 memset(¶ms, 0, sizeof(params));
1703 qedi->ll2_mtu = mtu;
1704 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
1705 params.drop_ttl0_packets = 0;
1706 params.rx_vlan_stripping = 1;
1707 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
1708 qedi_ops->ll2->start(qedi->cdev, ¶ms);
1712 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
1713 * for gaps) for the matching absolute-pf-id of the QEDI device.
1715 static struct nvm_iscsi_block *
1716 qedi_get_nvram_block(struct qedi_ctx *qedi)
1721 struct nvm_iscsi_block *block;
1723 pf = qedi->dev_info.common.abs_pf_id;
1724 block = &qedi->iscsi_image->iscsi_cfg.block[0];
1725 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
1726 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
1727 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
1728 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
1729 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
1730 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
1731 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
1737 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
1739 struct qedi_ctx *qedi = data;
1740 struct nvm_iscsi_initiator *initiator;
1743 u32 ipv6_en, dhcp_en, ip_len;
1744 struct nvm_iscsi_block *block;
1745 char *fmt, *ip, *sub, *gw;
1747 block = qedi_get_nvram_block(qedi);
1751 initiator = &block->initiator;
1752 ipv6_en = block->generic.ctrl_flags &
1753 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1754 dhcp_en = block->generic.ctrl_flags &
1755 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
1756 /* Static IP assignments. */
1757 fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
1758 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
1759 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1760 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
1761 initiator->ipv4.subnet_mask.byte;
1762 gw = ipv6_en ? initiator->ipv6.gateway.byte :
1763 initiator->ipv4.gateway.byte;
1764 /* DHCP IP adjustments. */
1765 fmt = dhcp_en ? "%s\n" : fmt;
1767 ip = ipv6_en ? "0::0" : "0.0.0.0";
1770 ip_len = ipv6_en ? 5 : 8;
1774 case ISCSI_BOOT_ETH_IP_ADDR:
1775 rc = snprintf(str, ip_len, fmt, ip);
1777 case ISCSI_BOOT_ETH_SUBNET_MASK:
1778 rc = snprintf(str, ip_len, fmt, sub);
1780 case ISCSI_BOOT_ETH_GATEWAY:
1781 rc = snprintf(str, ip_len, fmt, gw);
1783 case ISCSI_BOOT_ETH_FLAGS:
1784 rc = snprintf(str, 3, "%hhd\n",
1785 SYSFS_FLAG_FW_SEL_BOOT);
1787 case ISCSI_BOOT_ETH_INDEX:
1788 rc = snprintf(str, 3, "0\n");
1790 case ISCSI_BOOT_ETH_MAC:
1791 rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN);
1793 case ISCSI_BOOT_ETH_VLAN:
1794 rc = snprintf(str, 12, "%d\n",
1795 GET_FIELD2(initiator->generic_cont0,
1796 NVM_ISCSI_CFG_INITIATOR_VLAN));
1798 case ISCSI_BOOT_ETH_ORIGIN:
1800 rc = snprintf(str, 3, "3\n");
1810 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
1815 case ISCSI_BOOT_ETH_FLAGS:
1816 case ISCSI_BOOT_ETH_MAC:
1817 case ISCSI_BOOT_ETH_INDEX:
1818 case ISCSI_BOOT_ETH_IP_ADDR:
1819 case ISCSI_BOOT_ETH_SUBNET_MASK:
1820 case ISCSI_BOOT_ETH_GATEWAY:
1821 case ISCSI_BOOT_ETH_ORIGIN:
1822 case ISCSI_BOOT_ETH_VLAN:
1832 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
1834 struct qedi_ctx *qedi = data;
1835 struct nvm_iscsi_initiator *initiator;
1838 struct nvm_iscsi_block *block;
1840 block = qedi_get_nvram_block(qedi);
1844 initiator = &block->initiator;
1847 case ISCSI_BOOT_INI_INITIATOR_NAME:
1848 rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
1849 initiator->initiator_name.byte);
1858 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
1863 case ISCSI_BOOT_INI_INITIATOR_NAME:
1874 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
1875 char *buf, enum qedi_nvm_tgts idx)
1879 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
1880 struct nvm_iscsi_block *block;
1881 char *chap_name, *chap_secret;
1882 char *mchap_name, *mchap_secret;
1884 block = qedi_get_nvram_block(qedi);
1886 goto exit_show_tgt_info;
1888 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
1889 "Port:%d, tgt_idx:%d\n",
1890 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
1892 ctrl_flags = block->target[idx].ctrl_flags &
1893 NVM_ISCSI_CFG_TARGET_ENABLED;
1896 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
1897 "Target disabled\n");
1898 goto exit_show_tgt_info;
1901 ipv6_en = block->generic.ctrl_flags &
1902 NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
1903 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
1904 chap_en = block->generic.ctrl_flags &
1905 NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
1906 chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
1907 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
1909 mchap_en = block->generic.ctrl_flags &
1910 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
1911 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
1912 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
1915 case ISCSI_BOOT_TGT_NAME:
1916 rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
1917 block->target[idx].target_name.byte);
1919 case ISCSI_BOOT_TGT_IP_ADDR:
1921 rc = snprintf(str, ip_len, "%pI6\n",
1922 block->target[idx].ipv6_addr.byte);
1924 rc = snprintf(str, ip_len, "%pI4\n",
1925 block->target[idx].ipv4_addr.byte);
1927 case ISCSI_BOOT_TGT_PORT:
1928 rc = snprintf(str, 12, "%d\n",
1929 GET_FIELD2(block->target[idx].generic_cont0,
1930 NVM_ISCSI_CFG_TARGET_TCP_PORT));
1932 case ISCSI_BOOT_TGT_LUN:
1933 rc = snprintf(str, 22, "%.*d\n",
1934 block->target[idx].lun.value[1],
1935 block->target[idx].lun.value[0]);
1937 case ISCSI_BOOT_TGT_CHAP_NAME:
1938 rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1941 case ISCSI_BOOT_TGT_CHAP_SECRET:
1942 rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1945 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
1946 rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1949 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
1950 rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
1953 case ISCSI_BOOT_TGT_FLAGS:
1954 rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
1956 case ISCSI_BOOT_TGT_NIC_ASSOC:
1957 rc = snprintf(str, 3, "0\n");
1968 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
1970 struct qedi_ctx *qedi = data;
1972 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
1975 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
1977 struct qedi_ctx *qedi = data;
1979 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
1982 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
1987 case ISCSI_BOOT_TGT_NAME:
1988 case ISCSI_BOOT_TGT_IP_ADDR:
1989 case ISCSI_BOOT_TGT_PORT:
1990 case ISCSI_BOOT_TGT_LUN:
1991 case ISCSI_BOOT_TGT_CHAP_NAME:
1992 case ISCSI_BOOT_TGT_CHAP_SECRET:
1993 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
1994 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
1995 case ISCSI_BOOT_TGT_NIC_ASSOC:
1996 case ISCSI_BOOT_TGT_FLAGS:
2006 static void qedi_boot_release(void *data)
2008 struct qedi_ctx *qedi = data;
2010 scsi_host_put(qedi->shost);
2013 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2016 struct qedi_nvm_iscsi_image nvm_image;
2018 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2019 "Get NVM iSCSI CFG image\n");
2020 ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2021 QED_NVM_IMAGE_ISCSI_CFG,
2022 (char *)qedi->iscsi_image,
2025 QEDI_ERR(&qedi->dbg_ctx,
2026 "Could not get NVM image. ret = %d\n", ret);
2031 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2033 struct iscsi_boot_kobj *boot_kobj;
2035 if (qedi_get_boot_info(qedi))
2038 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2039 if (!qedi->boot_kset)
2042 if (!scsi_host_get(qedi->shost))
2045 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2046 qedi_show_boot_tgt_pri_info,
2047 qedi_tgt_get_attr_visibility,
2052 if (!scsi_host_get(qedi->shost))
2055 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2056 qedi_show_boot_tgt_sec_info,
2057 qedi_tgt_get_attr_visibility,
2062 if (!scsi_host_get(qedi->shost))
2065 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2066 qedi_show_boot_ini_info,
2067 qedi_ini_get_attr_visibility,
2072 if (!scsi_host_get(qedi->shost))
2075 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2076 qedi_show_boot_eth_info,
2077 qedi_eth_get_attr_visibility,
2085 scsi_host_put(qedi->shost);
2087 iscsi_boot_destroy_kset(qedi->boot_kset);
2091 static void __qedi_remove(struct pci_dev *pdev, int mode)
2093 struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2096 if (qedi->tmf_thread) {
2097 flush_workqueue(qedi->tmf_thread);
2098 destroy_workqueue(qedi->tmf_thread);
2099 qedi->tmf_thread = NULL;
2102 if (qedi->offload_thread) {
2103 flush_workqueue(qedi->offload_thread);
2104 destroy_workqueue(qedi->offload_thread);
2105 qedi->offload_thread = NULL;
2108 #ifdef CONFIG_DEBUG_FS
2109 qedi_dbg_host_exit(&qedi->dbg_ctx);
2111 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2112 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2114 qedi_sync_free_irqs(qedi);
2116 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2117 qedi_ops->stop(qedi->cdev);
2118 qedi_ops->ll2->stop(qedi->cdev);
2121 if (mode == QEDI_MODE_NORMAL)
2122 qedi_free_iscsi_pf_param(qedi);
2124 rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2126 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2128 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2129 qedi_ops->common->slowpath_stop(qedi->cdev);
2130 qedi_ops->common->remove(qedi->cdev);
2133 qedi_destroy_fp(qedi);
2135 if (mode == QEDI_MODE_NORMAL) {
2136 qedi_release_cid_que(qedi);
2137 qedi_cm_free_mem(qedi);
2138 qedi_free_uio(qedi->udev);
2139 qedi_free_itt(qedi);
2141 iscsi_host_remove(qedi->shost);
2142 iscsi_host_free(qedi->shost);
2144 if (qedi->ll2_recv_thread) {
2145 kthread_stop(qedi->ll2_recv_thread);
2146 qedi->ll2_recv_thread = NULL;
2148 qedi_ll2_free_skbs(qedi);
2150 if (qedi->boot_kset)
2151 iscsi_boot_destroy_kset(qedi->boot_kset);
2155 static int __qedi_probe(struct pci_dev *pdev, int mode)
2157 struct qedi_ctx *qedi;
2158 struct qed_ll2_params params;
2163 struct qed_link_params link_params;
2164 struct qed_slowpath_params sp_params;
2165 struct qed_probe_params qed_params;
2166 void *task_start, *task_end;
2170 if (mode != QEDI_MODE_RECOVERY) {
2171 qedi = qedi_host_alloc(pdev);
2177 qedi = pci_get_drvdata(pdev);
2180 memset(&qed_params, 0, sizeof(qed_params));
2181 qed_params.protocol = QED_PROTOCOL_ISCSI;
2182 qed_params.dp_module = dp_module;
2183 qed_params.dp_level = dp_level;
2184 qed_params.is_vf = is_vf;
2185 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2188 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2192 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2194 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2198 if (mode != QEDI_MODE_RECOVERY) {
2199 rc = qedi_set_iscsi_pf_param(qedi);
2202 QEDI_ERR(&qedi->dbg_ctx,
2203 "Set iSCSI pf param fail\n");
2208 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2210 rc = qedi_prepare_fp(qedi);
2212 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2213 goto free_pf_params;
2216 /* Start the Slowpath-process */
2217 memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2218 sp_params.int_mode = QED_INT_MODE_MSIX;
2219 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2220 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2221 sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2222 sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2223 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2224 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2226 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2230 /* update_pf_params needs to be called before and after slowpath
2233 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2235 rc = qedi_setup_int(qedi);
2237 goto stop_iscsi_func;
2239 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2241 /* Learn information crucial for qedi to progress */
2242 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2244 goto stop_iscsi_func;
2246 /* Record BDQ producer doorbell addresses */
2247 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2248 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2249 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2250 "BDQ primary_prod=%p secondary_prod=%p.\n",
2251 qedi->bdq_primary_prod,
2252 qedi->bdq_secondary_prod);
2255 * We need to write the number of BDs in the BDQ we've preallocated so
2256 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2259 qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2260 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2261 "Writing %d to primary and secondary BDQ doorbell registers.\n",
2262 qedi->bdq_prod_idx);
2263 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2264 tmp = readw(qedi->bdq_primary_prod);
2265 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2266 tmp = readw(qedi->bdq_secondary_prod);
2268 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2269 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2272 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2273 qedi_ops->common->set_name(qedi->cdev, host_buf);
2275 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2277 memset(¶ms, 0, sizeof(params));
2278 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2279 qedi->ll2_mtu = DEF_PATH_MTU;
2280 params.drop_ttl0_packets = 0;
2281 params.rx_vlan_stripping = 1;
2282 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2284 if (mode != QEDI_MODE_RECOVERY) {
2285 /* set up rx path */
2286 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2287 spin_lock_init(&qedi->ll2_lock);
2288 /* start qedi context */
2289 spin_lock_init(&qedi->hba_lock);
2290 spin_lock_init(&qedi->task_idx_lock);
2292 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2293 qedi_ops->ll2->start(qedi->cdev, ¶ms);
2295 if (mode != QEDI_MODE_RECOVERY) {
2296 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2301 rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2302 qedi, qedi_iscsi_event_cb);
2305 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2309 task_start = qedi_get_task_mem(&qedi->tasks, 0);
2310 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2311 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2312 "Task context start=%p, end=%p block_size=%u.\n",
2313 task_start, task_end, qedi->tasks.size);
2315 memset(&link_params, 0, sizeof(link_params));
2316 link_params.link_up = true;
2317 rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2319 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2320 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2323 #ifdef CONFIG_DEBUG_FS
2324 qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops,
2327 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2328 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2329 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2330 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2332 if (mode == QEDI_MODE_NORMAL) {
2333 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2334 QEDI_ERR(&qedi->dbg_ctx,
2335 "Could not add iscsi host\n");
2340 /* Allocate uio buffers */
2341 rc = qedi_alloc_uio_rings(qedi);
2343 QEDI_ERR(&qedi->dbg_ctx,
2344 "UIO alloc ring failed err=%d\n", rc);
2348 rc = qedi_init_uio(qedi);
2350 QEDI_ERR(&qedi->dbg_ctx,
2351 "UIO init failed, err=%d\n", rc);
2355 /* host the array on iscsi_conn */
2356 rc = qedi_setup_cid_que(qedi);
2358 QEDI_ERR(&qedi->dbg_ctx,
2359 "Could not setup cid que\n");
2363 rc = qedi_cm_alloc_mem(qedi);
2365 QEDI_ERR(&qedi->dbg_ctx,
2366 "Could not alloc cm memory\n");
2370 rc = qedi_alloc_itt(qedi);
2372 QEDI_ERR(&qedi->dbg_ctx,
2373 "Could not alloc itt memory\n");
2377 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2378 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2379 if (!qedi->tmf_thread) {
2380 QEDI_ERR(&qedi->dbg_ctx,
2381 "Unable to start tmf thread!\n");
2386 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2387 qedi->offload_thread = create_workqueue(host_buf);
2388 if (!qedi->offload_thread) {
2389 QEDI_ERR(&qedi->dbg_ctx,
2390 "Unable to start offload thread!\n");
2392 goto free_tmf_thread;
2395 /* F/w needs 1st task context memory entry for performance */
2396 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2397 atomic_set(&qedi->num_offloads, 0);
2399 if (qedi_setup_boot_info(qedi))
2400 QEDI_ERR(&qedi->dbg_ctx,
2401 "No iSCSI boot target configured\n");
2403 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2405 QEDI_ERR(&qedi->dbg_ctx,
2406 "Failed to send drv state to MFW\n");
2413 destroy_workqueue(qedi->tmf_thread);
2415 qedi_release_cid_que(qedi);
2417 qedi_free_uio(qedi->udev);
2419 #ifdef CONFIG_DEBUG_FS
2420 qedi_dbg_host_exit(&qedi->dbg_ctx);
2422 iscsi_host_remove(qedi->shost);
2424 qedi_ops->stop(qedi->cdev);
2426 qedi_ops->common->slowpath_stop(qedi->cdev);
2428 qedi_ops->common->remove(qedi->cdev);
2430 qedi_free_iscsi_pf_param(qedi);
2432 iscsi_host_free(qedi->shost);
2437 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2439 return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2442 static void qedi_remove(struct pci_dev *pdev)
2444 __qedi_remove(pdev, QEDI_MODE_NORMAL);
2447 static struct pci_device_id qedi_pci_tbl[] = {
2448 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2449 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2452 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2454 static enum cpuhp_state qedi_cpuhp_state;
2456 static struct pci_driver qedi_pci_driver = {
2457 .name = QEDI_MODULE_NAME,
2458 .id_table = qedi_pci_tbl,
2459 .probe = qedi_probe,
2460 .remove = qedi_remove,
2463 static int __init qedi_init(void)
2465 struct qedi_percpu_s *p;
2468 qedi_ops = qed_get_iscsi_ops();
2470 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2474 #ifdef CONFIG_DEBUG_FS
2475 qedi_dbg_init("qedi");
2478 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2479 if (!qedi_scsi_transport) {
2480 QEDI_ERR(NULL, "Could not register qedi transport");
2482 goto exit_qedi_init_1;
2485 for_each_possible_cpu(cpu) {
2486 p = &per_cpu(qedi_percpu, cpu);
2487 INIT_LIST_HEAD(&p->work_list);
2488 spin_lock_init(&p->p_work_lock);
2492 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2493 qedi_cpu_online, qedi_cpu_offline);
2495 goto exit_qedi_init_2;
2496 qedi_cpuhp_state = rc;
2498 rc = pci_register_driver(&qedi_pci_driver);
2500 QEDI_ERR(NULL, "Failed to register driver\n");
2507 cpuhp_remove_state(qedi_cpuhp_state);
2509 iscsi_unregister_transport(&qedi_iscsi_transport);
2511 #ifdef CONFIG_DEBUG_FS
2514 qed_put_iscsi_ops();
2518 static void __exit qedi_cleanup(void)
2520 pci_unregister_driver(&qedi_pci_driver);
2521 cpuhp_remove_state(qedi_cpuhp_state);
2522 iscsi_unregister_transport(&qedi_iscsi_transport);
2524 #ifdef CONFIG_DEBUG_FS
2527 qed_put_iscsi_ops();
2530 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2531 MODULE_LICENSE("GPL");
2532 MODULE_AUTHOR("QLogic Corporation");
2533 MODULE_VERSION(QEDI_MODULE_VERSION);
2534 module_init(qedi_init);
2535 module_exit(qedi_cleanup);