2 * This file is part of the Chelsio FCoE driver for Linux.
4 * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/pci.h>
41 #include <linux/aer.h>
43 #include <linux/notifier.h>
44 #include <linux/kdebug.h>
45 #include <linux/seq_file.h>
46 #include <linux/debugfs.h>
47 #include <linux/string.h>
48 #include <linux/export.h>
50 #include "csio_init.h"
51 #include "csio_defs.h"
53 #define CSIO_MIN_MEMPOOL_SZ 64
55 static struct dentry *csio_debugfs_root;
57 static struct scsi_transport_template *csio_fcoe_transport;
58 static struct scsi_transport_template *csio_fcoe_transport_vport;
64 csio_mem_open(struct inode *inode, struct file *file)
66 file->private_data = inode->i_private;
71 csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
74 loff_t avail = file->f_path.dentry->d_inode->i_size;
75 unsigned int mem = (uintptr_t)file->private_data & 3;
76 struct csio_hw *hw = file->private_data - mem;
82 if (count > avail - pos)
91 ret = csio_hw_mc_read(hw, pos, data, NULL);
93 ret = csio_hw_edc_read(hw, mem, pos, data, NULL);
97 ofst = pos % sizeof(data);
98 len = min(count, sizeof(data) - ofst);
99 if (copy_to_user(buf, (u8 *)data + ofst, len))
111 static const struct file_operations csio_mem_debugfs_fops = {
112 .owner = THIS_MODULE,
113 .open = csio_mem_open,
114 .read = csio_mem_read,
115 .llseek = default_llseek,
118 static void __devinit
119 csio_add_debugfs_mem(struct csio_hw *hw, const char *name,
120 unsigned int idx, unsigned int size_mb)
124 de = debugfs_create_file(name, S_IRUSR, hw->debugfs_root,
125 (void *)hw + idx, &csio_mem_debugfs_fops);
126 if (de && de->d_inode)
127 de->d_inode->i_size = size_mb << 20;
131 csio_setup_debugfs(struct csio_hw *hw)
135 if (IS_ERR_OR_NULL(hw->debugfs_root))
138 i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE);
139 if (i & EDRAM0_ENABLE)
140 csio_add_debugfs_mem(hw, "edc0", MEM_EDC0, 5);
141 if (i & EDRAM1_ENABLE)
142 csio_add_debugfs_mem(hw, "edc1", MEM_EDC1, 5);
143 if (i & EXT_MEM_ENABLE)
144 csio_add_debugfs_mem(hw, "mc", MEM_MC,
145 EXT_MEM_SIZE_GET(csio_rd_reg32(hw, MA_EXT_MEMORY_BAR)));
150 * csio_dfs_create - Creates and sets up per-hw debugfs.
154 csio_dfs_create(struct csio_hw *hw)
156 if (csio_debugfs_root) {
157 hw->debugfs_root = debugfs_create_dir(pci_name(hw->pdev),
159 csio_setup_debugfs(hw);
166 * csio_dfs_destroy - Destroys per-hw debugfs.
169 csio_dfs_destroy(struct csio_hw *hw)
171 if (hw->debugfs_root)
172 debugfs_remove_recursive(hw->debugfs_root);
178 * csio_dfs_init - Debug filesystem initialization for the module.
184 csio_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
185 if (!csio_debugfs_root)
186 pr_warn("Could not create debugfs entry, continuing\n");
192 * csio_dfs_exit - debugfs cleanup for the module.
197 debugfs_remove(csio_debugfs_root);
201 * csio_pci_init - PCI initialization.
203 * @bars: Bitmask of bars to be requested.
205 * Initializes the PCI function by enabling MMIO, setting bus
206 * mastership and setting DMA mask.
209 csio_pci_init(struct pci_dev *pdev, int *bars)
213 *bars = pci_select_bars(pdev, IORESOURCE_MEM);
215 if (pci_enable_device_mem(pdev))
218 if (pci_request_selected_regions(pdev, *bars, KBUILD_MODNAME))
219 goto err_disable_device;
221 pci_set_master(pdev);
222 pci_try_set_mwi(pdev);
224 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
225 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
226 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
227 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
229 dev_err(&pdev->dev, "No suitable DMA available.\n");
230 goto err_release_regions;
236 pci_release_selected_regions(pdev, *bars);
238 pci_disable_device(pdev);
245 * csio_pci_exit - PCI unitialization.
247 * @bars: Bars to be released.
251 csio_pci_exit(struct pci_dev *pdev, int *bars)
253 pci_release_selected_regions(pdev, *bars);
254 pci_disable_device(pdev);
258 * csio_hw_init_workers - Initialize the HW module's worker threads.
263 csio_hw_init_workers(struct csio_hw *hw)
265 INIT_WORK(&hw->evtq_work, csio_evtq_worker);
269 csio_hw_exit_workers(struct csio_hw *hw)
271 cancel_work_sync(&hw->evtq_work);
272 flush_scheduled_work();
276 csio_create_queues(struct csio_hw *hw)
279 struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw);
281 struct csio_scsi_cpu_info *info;
283 if (hw->flags & CSIO_HWF_Q_FW_ALLOCED)
286 if (hw->intr_mode != CSIO_IM_MSIX) {
287 rv = csio_wr_iq_create(hw, NULL, hw->intr_iq_idx,
288 0, hw->pport[0].portid, false, NULL);
290 csio_err(hw, " Forward Interrupt IQ failed!: %d\n", rv);
296 rv = csio_wr_iq_create(hw, NULL, hw->fwevt_iq_idx,
297 csio_get_fwevt_intr_idx(hw),
298 hw->pport[0].portid, true, NULL);
300 csio_err(hw, "FW event IQ config failed!: %d\n", rv);
304 /* Create mgmt queue */
305 rv = csio_wr_eq_create(hw, NULL, mgmtm->eq_idx,
306 mgmtm->iq_idx, hw->pport[0].portid, NULL);
309 csio_err(hw, "Mgmt EQ create failed!: %d\n", rv);
313 /* Create SCSI queues */
314 for (i = 0; i < hw->num_pports; i++) {
315 info = &hw->scsi_cpu_info[i];
317 for (j = 0; j < info->max_cpus; j++) {
318 struct csio_scsi_qset *sqset = &hw->sqset[i][j];
320 rv = csio_wr_iq_create(hw, NULL, sqset->iq_idx,
321 sqset->intr_idx, i, false, NULL);
324 "SCSI module IQ config failed [%d][%d]:%d\n",
328 rv = csio_wr_eq_create(hw, NULL, sqset->eq_idx,
329 sqset->iq_idx, i, NULL);
332 "SCSI module EQ config failed [%d][%d]:%d\n",
337 } /* For all ports */
339 hw->flags |= CSIO_HWF_Q_FW_ALLOCED;
342 csio_wr_destroy_queues(hw, true);
347 * csio_config_queues - Configure the DMA queues.
350 * Allocates memory for queues are registers them with FW.
353 csio_config_queues(struct csio_hw *hw)
355 int i, j, idx, k = 0;
357 struct csio_scsi_qset *sqset;
358 struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw);
359 struct csio_scsi_qset *orig;
360 struct csio_scsi_cpu_info *info;
362 if (hw->flags & CSIO_HWF_Q_MEM_ALLOCED)
363 return csio_create_queues(hw);
365 /* Calculate number of SCSI queues for MSIX we would like */
366 hw->num_scsi_msix_cpus = num_online_cpus();
367 hw->num_sqsets = num_online_cpus() * hw->num_pports;
369 if (hw->num_sqsets > CSIO_MAX_SCSI_QSETS) {
370 hw->num_sqsets = CSIO_MAX_SCSI_QSETS;
371 hw->num_scsi_msix_cpus = CSIO_MAX_SCSI_CPU;
374 /* Initialize max_cpus, may get reduced during msix allocations */
375 for (i = 0; i < hw->num_pports; i++)
376 hw->scsi_cpu_info[i].max_cpus = hw->num_scsi_msix_cpus;
378 csio_dbg(hw, "nsqsets:%d scpus:%d\n",
379 hw->num_sqsets, hw->num_scsi_msix_cpus);
381 csio_intr_enable(hw);
383 if (hw->intr_mode != CSIO_IM_MSIX) {
385 /* Allocate Forward interrupt iq. */
386 hw->intr_iq_idx = csio_wr_alloc_q(hw, CSIO_INTR_IQSIZE,
387 CSIO_INTR_WRSIZE, CSIO_INGRESS,
388 (void *)hw, 0, 0, NULL);
389 if (hw->intr_iq_idx == -1) {
391 "Forward interrupt queue creation failed\n");
396 /* Allocate the FW evt queue */
397 hw->fwevt_iq_idx = csio_wr_alloc_q(hw, CSIO_FWEVT_IQSIZE,
399 CSIO_INGRESS, (void *)hw,
400 CSIO_FWEVT_FLBUFS, 0,
401 csio_fwevt_intx_handler);
402 if (hw->fwevt_iq_idx == -1) {
403 csio_err(hw, "FW evt queue creation failed\n");
407 /* Allocate the mgmt queue */
408 mgmtm->eq_idx = csio_wr_alloc_q(hw, CSIO_MGMT_EQSIZE,
410 CSIO_EGRESS, (void *)hw, 0, 0, NULL);
411 if (mgmtm->eq_idx == -1) {
412 csio_err(hw, "Failed to alloc egress queue for mgmt module\n");
416 /* Use FW IQ for MGMT req completion */
417 mgmtm->iq_idx = hw->fwevt_iq_idx;
419 /* Allocate SCSI queues */
420 for (i = 0; i < hw->num_pports; i++) {
421 info = &hw->scsi_cpu_info[i];
423 for (j = 0; j < hw->num_scsi_msix_cpus; j++) {
424 sqset = &hw->sqset[i][j];
426 if (j >= info->max_cpus) {
427 k = j % info->max_cpus;
428 orig = &hw->sqset[i][k];
429 sqset->eq_idx = orig->eq_idx;
430 sqset->iq_idx = orig->iq_idx;
434 idx = csio_wr_alloc_q(hw, csio_scsi_eqsize, 0,
435 CSIO_EGRESS, (void *)hw, 0, 0,
438 csio_err(hw, "EQ creation failed for idx:%d\n",
445 idx = csio_wr_alloc_q(hw, CSIO_SCSI_IQSIZE,
446 CSIO_SCSI_IQ_WRSZ, CSIO_INGRESS,
448 csio_scsi_intx_handler);
450 csio_err(hw, "IQ creation failed for idx:%d\n",
456 } /* For all ports */
458 hw->flags |= CSIO_HWF_Q_MEM_ALLOCED;
460 rv = csio_create_queues(hw);
465 * Now request IRQs for the vectors. In the event of a failure,
466 * cleanup is handled internally by this function.
468 rv = csio_request_irqs(hw);
475 csio_intr_disable(hw, false);
481 csio_resource_alloc(struct csio_hw *hw)
483 struct csio_wrm *wrm = csio_hw_to_wrm(hw);
486 wrm->num_q = ((CSIO_MAX_SCSI_QSETS * 2) + CSIO_HW_NIQ +
487 CSIO_HW_NEQ + CSIO_HW_NFLQ + CSIO_HW_NINTXQ);
489 hw->mb_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ,
490 sizeof(struct csio_mb));
494 hw->rnode_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ,
495 sizeof(struct csio_rnode));
496 if (!hw->rnode_mempool)
497 goto err_free_mb_mempool;
499 hw->scsi_pci_pool = pci_pool_create("csio_scsi_pci_pool", hw->pdev,
500 CSIO_SCSI_RSP_LEN, 8, 0);
501 if (!hw->scsi_pci_pool)
502 goto err_free_rn_pool;
507 mempool_destroy(hw->rnode_mempool);
508 hw->rnode_mempool = NULL;
510 mempool_destroy(hw->mb_mempool);
511 hw->mb_mempool = NULL;
517 csio_resource_free(struct csio_hw *hw)
519 pci_pool_destroy(hw->scsi_pci_pool);
520 hw->scsi_pci_pool = NULL;
521 mempool_destroy(hw->rnode_mempool);
522 hw->rnode_mempool = NULL;
523 mempool_destroy(hw->mb_mempool);
524 hw->mb_mempool = NULL;
528 * csio_hw_alloc - Allocate and initialize the HW module.
531 * Allocates HW structure, DMA, memory resources, maps BARS to
532 * host memory and initializes HW module.
534 static struct csio_hw * __devinit
535 csio_hw_alloc(struct pci_dev *pdev)
539 hw = kzalloc(sizeof(struct csio_hw), GFP_KERNEL);
544 strncpy(hw->drv_version, CSIO_DRV_VERSION, 32);
546 /* memory pool/DMA pool allocation */
547 if (csio_resource_alloc(hw))
550 /* Get the start address of registers from BAR 0 */
551 hw->regstart = ioremap_nocache(pci_resource_start(pdev, 0),
552 pci_resource_len(pdev, 0));
554 csio_err(hw, "Could not map BAR 0, regstart = %p\n",
556 goto err_resource_free;
559 csio_hw_init_workers(hw);
561 if (csio_hw_init(hw))
566 csio_dbg(hw, "hw:%p\n", hw);
571 csio_hw_exit_workers(hw);
572 iounmap(hw->regstart);
574 csio_resource_free(hw);
582 * csio_hw_free - Uninitialize and free the HW module.
585 * Disable interrupts, uninit the HW module, free resources, free hw.
588 csio_hw_free(struct csio_hw *hw)
590 csio_intr_disable(hw, true);
591 csio_hw_exit_workers(hw);
593 iounmap(hw->regstart);
594 csio_dfs_destroy(hw);
595 csio_resource_free(hw);
600 * csio_shost_init - Create and initialize the lnode module.
601 * @hw: The HW module.
602 * @dev: The device associated with this invocation.
603 * @probe: Called from probe context or not?
604 * @os_pln: Parent lnode if any.
606 * Allocates lnode structure via scsi_host_alloc, initializes
607 * shost, initializes lnode module and registers with SCSI ML
608 * via scsi_host_add. This function is shared between physical and
609 * virtual node ports.
612 csio_shost_init(struct csio_hw *hw, struct device *dev,
613 bool probe, struct csio_lnode *pln)
615 struct Scsi_Host *shost = NULL;
616 struct csio_lnode *ln;
618 csio_fcoe_shost_template.cmd_per_lun = csio_lun_qdepth;
619 csio_fcoe_shost_vport_template.cmd_per_lun = csio_lun_qdepth;
622 * hw->pdev is the physical port's PCI dev structure,
623 * which will be different from the NPIV dev structure.
625 if (dev == &hw->pdev->dev)
626 shost = scsi_host_alloc(
627 &csio_fcoe_shost_template,
628 sizeof(struct csio_lnode));
630 shost = scsi_host_alloc(
631 &csio_fcoe_shost_vport_template,
632 sizeof(struct csio_lnode));
637 ln = shost_priv(shost);
638 memset(ln, 0, sizeof(struct csio_lnode));
640 /* Link common lnode to this lnode */
641 ln->dev_num = (shost->host_no << 16);
643 shost->can_queue = CSIO_MAX_QUEUE;
645 shost->unique_id = shost->host_no;
646 shost->max_cmd_len = 16; /* Max CDB length supported */
647 shost->max_id = min_t(uint32_t, csio_fcoe_rnodes,
648 hw->fres_info.max_ssns);
649 shost->max_lun = CSIO_MAX_LUN;
650 if (dev == &hw->pdev->dev)
651 shost->transportt = csio_fcoe_transport;
653 shost->transportt = csio_fcoe_transport_vport;
659 /* Other initialization here: Common, Transport specific */
660 if (csio_lnode_init(ln, hw, pln))
663 if (scsi_add_host(shost, dev))
671 scsi_host_put(shost);
677 * csio_shost_exit - De-instantiate the shost.
678 * @ln: The lnode module corresponding to the shost.
682 csio_shost_exit(struct csio_lnode *ln)
684 struct Scsi_Host *shost = csio_ln_to_shost(ln);
685 struct csio_hw *hw = csio_lnode_to_hw(ln);
687 /* Inform transport */
688 fc_remove_host(shost);
691 scsi_remove_host(shost);
693 /* Flush all the events, so that any rnode removal events
694 * already queued are all handled, before we remove the lnode.
696 spin_lock_irq(&hw->lock);
698 spin_unlock_irq(&hw->lock);
701 scsi_host_put(shost);
705 csio_lnode_alloc(struct csio_hw *hw)
707 return csio_shost_init(hw, &hw->pdev->dev, false, NULL);
711 csio_lnodes_block_request(struct csio_hw *hw)
713 struct Scsi_Host *shost;
714 struct csio_lnode *sln;
715 struct csio_lnode *ln;
716 struct list_head *cur_ln, *cur_cln;
717 struct csio_lnode **lnode_list;
720 lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns),
723 csio_err(hw, "Failed to allocate lnodes_list");
727 spin_lock_irq(&hw->lock);
728 /* Traverse sibling lnodes */
729 list_for_each(cur_ln, &hw->sln_head) {
730 sln = (struct csio_lnode *) cur_ln;
731 lnode_list[cur_cnt++] = sln;
733 /* Traverse children lnodes */
734 list_for_each(cur_cln, &sln->cln_head)
735 lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln;
737 spin_unlock_irq(&hw->lock);
739 for (ii = 0; ii < cur_cnt; ii++) {
740 csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]);
742 shost = csio_ln_to_shost(ln);
743 scsi_block_requests(shost);
750 csio_lnodes_unblock_request(struct csio_hw *hw)
752 struct csio_lnode *ln;
753 struct Scsi_Host *shost;
754 struct csio_lnode *sln;
755 struct list_head *cur_ln, *cur_cln;
756 struct csio_lnode **lnode_list;
759 lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns),
762 csio_err(hw, "Failed to allocate lnodes_list");
766 spin_lock_irq(&hw->lock);
767 /* Traverse sibling lnodes */
768 list_for_each(cur_ln, &hw->sln_head) {
769 sln = (struct csio_lnode *) cur_ln;
770 lnode_list[cur_cnt++] = sln;
772 /* Traverse children lnodes */
773 list_for_each(cur_cln, &sln->cln_head)
774 lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln;
776 spin_unlock_irq(&hw->lock);
778 for (ii = 0; ii < cur_cnt; ii++) {
779 csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]);
781 shost = csio_ln_to_shost(ln);
782 scsi_unblock_requests(shost);
788 csio_lnodes_block_by_port(struct csio_hw *hw, uint8_t portid)
790 struct csio_lnode *ln;
791 struct Scsi_Host *shost;
792 struct csio_lnode *sln;
793 struct list_head *cur_ln, *cur_cln;
794 struct csio_lnode **lnode_list;
797 lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns),
800 csio_err(hw, "Failed to allocate lnodes_list");
804 spin_lock_irq(&hw->lock);
805 /* Traverse sibling lnodes */
806 list_for_each(cur_ln, &hw->sln_head) {
807 sln = (struct csio_lnode *) cur_ln;
808 if (sln->portid != portid)
811 lnode_list[cur_cnt++] = sln;
813 /* Traverse children lnodes */
814 list_for_each(cur_cln, &sln->cln_head)
815 lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln;
817 spin_unlock_irq(&hw->lock);
819 for (ii = 0; ii < cur_cnt; ii++) {
820 csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]);
822 shost = csio_ln_to_shost(ln);
823 scsi_block_requests(shost);
829 csio_lnodes_unblock_by_port(struct csio_hw *hw, uint8_t portid)
831 struct csio_lnode *ln;
832 struct Scsi_Host *shost;
833 struct csio_lnode *sln;
834 struct list_head *cur_ln, *cur_cln;
835 struct csio_lnode **lnode_list;
838 lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns),
841 csio_err(hw, "Failed to allocate lnodes_list");
845 spin_lock_irq(&hw->lock);
846 /* Traverse sibling lnodes */
847 list_for_each(cur_ln, &hw->sln_head) {
848 sln = (struct csio_lnode *) cur_ln;
849 if (sln->portid != portid)
851 lnode_list[cur_cnt++] = sln;
853 /* Traverse children lnodes */
854 list_for_each(cur_cln, &sln->cln_head)
855 lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln;
857 spin_unlock_irq(&hw->lock);
859 for (ii = 0; ii < cur_cnt; ii++) {
860 csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]);
862 shost = csio_ln_to_shost(ln);
863 scsi_unblock_requests(shost);
869 csio_lnodes_exit(struct csio_hw *hw, bool npiv)
871 struct csio_lnode *sln;
872 struct csio_lnode *ln;
873 struct list_head *cur_ln, *cur_cln;
874 struct csio_lnode **lnode_list;
877 lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns),
880 csio_err(hw, "lnodes_exit: Failed to allocate lnodes_list.\n");
884 /* Get all child lnodes(NPIV ports) */
885 spin_lock_irq(&hw->lock);
886 list_for_each(cur_ln, &hw->sln_head) {
887 sln = (struct csio_lnode *) cur_ln;
889 /* Traverse children lnodes */
890 list_for_each(cur_cln, &sln->cln_head)
891 lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln;
893 spin_unlock_irq(&hw->lock);
895 /* Delete NPIV lnodes */
896 for (ii = 0; ii < cur_cnt; ii++) {
897 csio_dbg(hw, "Deleting child lnode: %p\n", lnode_list[ii]);
899 fc_vport_terminate(ln->fc_vport);
902 /* Delete only npiv lnodes */
907 /* Get all physical lnodes */
908 spin_lock_irq(&hw->lock);
909 /* Traverse sibling lnodes */
910 list_for_each(cur_ln, &hw->sln_head) {
911 sln = (struct csio_lnode *) cur_ln;
912 lnode_list[cur_cnt++] = sln;
914 spin_unlock_irq(&hw->lock);
916 /* Delete physical lnodes */
917 for (ii = 0; ii < cur_cnt; ii++) {
918 csio_dbg(hw, "Deleting parent lnode: %p\n", lnode_list[ii]);
919 csio_shost_exit(lnode_list[ii]);
927 * csio_lnode_init_post: Set lnode attributes after starting HW.
932 csio_lnode_init_post(struct csio_lnode *ln)
934 struct Scsi_Host *shost = csio_ln_to_shost(ln);
936 csio_fchost_attr_init(ln);
938 scsi_scan_host(shost);
942 * csio_probe_one - Instantiate this function.
946 * This is the .probe() callback of the driver. This function:
947 * - Initializes the PCI function by enabling MMIO, setting bus
948 * mastership and setting DMA mask.
949 * - Allocates HW structure, DMA, memory resources, maps BARS to
950 * host memory and initializes HW module.
951 * - Allocates lnode structure via scsi_host_alloc, initializes
952 * shost, initialized lnode module and registers with SCSI ML
954 * - Enables interrupts, and starts the chip by kicking off the
956 * - Once hardware is ready, initiated scan of the host via
960 csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
966 struct csio_lnode *ln;
968 rv = csio_pci_init(pdev, &bars);
972 hw = csio_hw_alloc(pdev);
978 pci_set_drvdata(pdev, hw);
980 if (csio_hw_start(hw) != 0) {
982 "Failed to start FW, continuing in debug mode.\n");
986 sprintf(hw->fwrev_str, "%u.%u.%u.%u\n",
987 FW_HDR_FW_VER_MAJOR_GET(hw->fwrev),
988 FW_HDR_FW_VER_MINOR_GET(hw->fwrev),
989 FW_HDR_FW_VER_MICRO_GET(hw->fwrev),
990 FW_HDR_FW_VER_BUILD_GET(hw->fwrev));
992 for (i = 0; i < hw->num_pports; i++) {
993 ln = csio_shost_init(hw, &pdev->dev, true, NULL);
998 /* Initialize portid */
999 ln->portid = hw->pport[i].portid;
1001 spin_lock_irq(&hw->lock);
1002 if (csio_lnode_start(ln) != 0)
1004 spin_unlock_irq(&hw->lock);
1009 csio_lnode_init_post(ln);
1013 goto err_lnode_exit;
1018 csio_lnodes_block_request(hw);
1019 spin_lock_irq(&hw->lock);
1021 spin_unlock_irq(&hw->lock);
1022 csio_lnodes_unblock_request(hw);
1023 pci_set_drvdata(hw->pdev, NULL);
1024 csio_lnodes_exit(hw, 0);
1027 csio_pci_exit(pdev, &bars);
1029 dev_err(&pdev->dev, "probe of device failed: %d\n", rv);
1034 * csio_remove_one - Remove one instance of the driver at this PCI function.
1037 * Used during hotplug operation.
1039 static void __devexit
1040 csio_remove_one(struct pci_dev *pdev)
1042 struct csio_hw *hw = pci_get_drvdata(pdev);
1043 int bars = pci_select_bars(pdev, IORESOURCE_MEM);
1045 csio_lnodes_block_request(hw);
1046 spin_lock_irq(&hw->lock);
1048 /* Stops lnode, Rnode s/m
1050 * All sessions with remote ports are unregistered.
1053 spin_unlock_irq(&hw->lock);
1054 csio_lnodes_unblock_request(hw);
1056 csio_lnodes_exit(hw, 0);
1058 pci_set_drvdata(pdev, NULL);
1059 csio_pci_exit(pdev, &bars);
1063 * csio_pci_error_detected - PCI error was detected
1067 static pci_ers_result_t
1068 csio_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
1070 struct csio_hw *hw = pci_get_drvdata(pdev);
1072 csio_lnodes_block_request(hw);
1073 spin_lock_irq(&hw->lock);
1075 /* Post PCI error detected evt to HW s/m
1076 * HW s/m handles this evt by quiescing IOs, unregisters rports
1077 * and finally takes the device to offline.
1079 csio_post_event(&hw->sm, CSIO_HWE_PCIERR_DETECTED);
1080 spin_unlock_irq(&hw->lock);
1081 csio_lnodes_unblock_request(hw);
1082 csio_lnodes_exit(hw, 0);
1083 csio_intr_disable(hw, true);
1084 pci_disable_device(pdev);
1085 return state == pci_channel_io_perm_failure ?
1086 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
1090 * csio_pci_slot_reset - PCI slot has been reset.
1094 static pci_ers_result_t
1095 csio_pci_slot_reset(struct pci_dev *pdev)
1097 struct csio_hw *hw = pci_get_drvdata(pdev);
1100 if (pci_enable_device(pdev)) {
1101 dev_err(&pdev->dev, "cannot re-enable device in slot reset\n");
1102 return PCI_ERS_RESULT_DISCONNECT;
1105 pci_set_master(pdev);
1106 pci_restore_state(pdev);
1107 pci_save_state(pdev);
1108 pci_cleanup_aer_uncorrect_error_status(pdev);
1110 /* Bring HW s/m to ready state.
1111 * but don't resume IOs.
1113 spin_lock_irq(&hw->lock);
1114 csio_post_event(&hw->sm, CSIO_HWE_PCIERR_SLOT_RESET);
1115 ready = csio_is_hw_ready(hw);
1116 spin_unlock_irq(&hw->lock);
1119 return PCI_ERS_RESULT_RECOVERED;
1121 dev_err(&pdev->dev, "Can't initialize HW when in slot reset\n");
1122 return PCI_ERS_RESULT_DISCONNECT;
1127 * csio_pci_resume - Resume normal operations
1132 csio_pci_resume(struct pci_dev *pdev)
1134 struct csio_hw *hw = pci_get_drvdata(pdev);
1135 struct csio_lnode *ln;
1139 /* Bring the LINK UP and Resume IO */
1141 for (i = 0; i < hw->num_pports; i++) {
1142 ln = csio_shost_init(hw, &pdev->dev, true, NULL);
1147 /* Initialize portid */
1148 ln->portid = hw->pport[i].portid;
1150 spin_lock_irq(&hw->lock);
1151 if (csio_lnode_start(ln) != 0)
1153 spin_unlock_irq(&hw->lock);
1158 csio_lnode_init_post(ln);
1162 goto err_resume_exit;
1167 csio_lnodes_block_request(hw);
1168 spin_lock_irq(&hw->lock);
1170 spin_unlock_irq(&hw->lock);
1171 csio_lnodes_unblock_request(hw);
1172 csio_lnodes_exit(hw, 0);
1174 dev_err(&pdev->dev, "resume of device failed: %d\n", rv);
1177 static struct pci_error_handlers csio_err_handler = {
1178 .error_detected = csio_pci_error_detected,
1179 .slot_reset = csio_pci_slot_reset,
1180 .resume = csio_pci_resume,
1183 static DEFINE_PCI_DEVICE_TABLE(csio_pci_tbl) = {
1184 CSIO_DEVICE(CSIO_DEVID_T440DBG_FCOE, 0), /* T440DBG FCOE */
1185 CSIO_DEVICE(CSIO_DEVID_T420CR_FCOE, 0), /* T420CR FCOE */
1186 CSIO_DEVICE(CSIO_DEVID_T422CR_FCOE, 0), /* T422CR FCOE */
1187 CSIO_DEVICE(CSIO_DEVID_T440CR_FCOE, 0), /* T440CR FCOE */
1188 CSIO_DEVICE(CSIO_DEVID_T420BCH_FCOE, 0), /* T420BCH FCOE */
1189 CSIO_DEVICE(CSIO_DEVID_T440BCH_FCOE, 0), /* T440BCH FCOE */
1190 CSIO_DEVICE(CSIO_DEVID_T440CH_FCOE, 0), /* T440CH FCOE */
1191 CSIO_DEVICE(CSIO_DEVID_T420SO_FCOE, 0), /* T420SO FCOE */
1192 CSIO_DEVICE(CSIO_DEVID_T420CX_FCOE, 0), /* T420CX FCOE */
1193 CSIO_DEVICE(CSIO_DEVID_T420BT_FCOE, 0), /* T420BT FCOE */
1194 CSIO_DEVICE(CSIO_DEVID_T404BT_FCOE, 0), /* T404BT FCOE */
1195 CSIO_DEVICE(CSIO_DEVID_B420_FCOE, 0), /* B420 FCOE */
1196 CSIO_DEVICE(CSIO_DEVID_B404_FCOE, 0), /* B404 FCOE */
1197 CSIO_DEVICE(CSIO_DEVID_T480CR_FCOE, 0), /* T480 CR FCOE */
1198 CSIO_DEVICE(CSIO_DEVID_T440LPCR_FCOE, 0), /* T440 LP-CR FCOE */
1199 CSIO_DEVICE(CSIO_DEVID_PE10K, 0), /* PE10K FCOE */
1200 CSIO_DEVICE(CSIO_DEVID_PE10K_PF1, 0), /* PE10K FCOE on PF1 */
1201 { 0, 0, 0, 0, 0, 0, 0 }
1205 static struct pci_driver csio_pci_driver = {
1206 .name = KBUILD_MODNAME,
1208 .owner = THIS_MODULE,
1210 .id_table = csio_pci_tbl,
1211 .probe = csio_probe_one,
1212 .remove = csio_remove_one,
1213 .err_handler = &csio_err_handler,
1217 * csio_init - Chelsio storage driver initialization function.
1225 pr_info("%s %s\n", CSIO_DRV_DESC, CSIO_DRV_VERSION);
1229 csio_fcoe_transport = fc_attach_transport(&csio_fc_transport_funcs);
1230 if (!csio_fcoe_transport)
1233 csio_fcoe_transport_vport =
1234 fc_attach_transport(&csio_fc_transport_vport_funcs);
1235 if (!csio_fcoe_transport_vport)
1238 rv = pci_register_driver(&csio_pci_driver);
1245 fc_release_transport(csio_fcoe_transport_vport);
1247 fc_release_transport(csio_fcoe_transport);
1254 * csio_exit - Chelsio storage driver uninitialization .
1256 * Function that gets called in the unload path.
1261 pci_unregister_driver(&csio_pci_driver);
1263 fc_release_transport(csio_fcoe_transport_vport);
1264 fc_release_transport(csio_fcoe_transport);
1267 module_init(csio_init);
1268 module_exit(csio_exit);
1269 MODULE_AUTHOR(CSIO_DRV_AUTHOR);
1270 MODULE_DESCRIPTION(CSIO_DRV_DESC);
1271 MODULE_LICENSE(CSIO_DRV_LICENSE);
1272 MODULE_DEVICE_TABLE(pci, csio_pci_tbl);
1273 MODULE_VERSION(CSIO_DRV_VERSION);
1274 MODULE_FIRMWARE(CSIO_FW_FNAME);