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_read(struct file
*file
, char __user
*buf
, size_t count
, loff_t
*ppos
)
67 loff_t avail
= file_inode(file
)->i_size
;
68 unsigned int mem
= (uintptr_t)file
->private_data
& 3;
69 struct csio_hw
*hw
= file
->private_data
- mem
;
75 if (count
> avail
- pos
)
84 ret
= hw
->chip_ops
->chip_mc_read(hw
, 0, pos
,
87 ret
= hw
->chip_ops
->chip_edc_read(hw
, mem
, pos
,
92 ofst
= pos
% sizeof(data
);
93 len
= min(count
, sizeof(data
) - ofst
);
94 if (copy_to_user(buf
, (u8
*)data
+ ofst
, len
))
106 static const struct file_operations csio_mem_debugfs_fops
= {
107 .owner
= THIS_MODULE
,
109 .read
= csio_mem_read
,
110 .llseek
= default_llseek
,
113 void csio_add_debugfs_mem(struct csio_hw
*hw
, const char *name
,
114 unsigned int idx
, unsigned int size_mb
)
118 de
= debugfs_create_file(name
, S_IRUSR
, hw
->debugfs_root
,
119 (void *)hw
+ idx
, &csio_mem_debugfs_fops
);
120 if (de
&& de
->d_inode
)
121 de
->d_inode
->i_size
= size_mb
<< 20;
124 static int csio_setup_debugfs(struct csio_hw
*hw
)
128 if (IS_ERR_OR_NULL(hw
->debugfs_root
))
131 i
= csio_rd_reg32(hw
, MA_TARGET_MEM_ENABLE
);
132 if (i
& EDRAM0_ENABLE
)
133 csio_add_debugfs_mem(hw
, "edc0", MEM_EDC0
, 5);
134 if (i
& EDRAM1_ENABLE
)
135 csio_add_debugfs_mem(hw
, "edc1", MEM_EDC1
, 5);
137 hw
->chip_ops
->chip_dfs_create_ext_mem(hw
);
142 * csio_dfs_create - Creates and sets up per-hw debugfs.
146 csio_dfs_create(struct csio_hw
*hw
)
148 if (csio_debugfs_root
) {
149 hw
->debugfs_root
= debugfs_create_dir(pci_name(hw
->pdev
),
151 csio_setup_debugfs(hw
);
158 * csio_dfs_destroy - Destroys per-hw debugfs.
161 csio_dfs_destroy(struct csio_hw
*hw
)
163 if (hw
->debugfs_root
)
164 debugfs_remove_recursive(hw
->debugfs_root
);
170 * csio_dfs_init - Debug filesystem initialization for the module.
176 csio_debugfs_root
= debugfs_create_dir(KBUILD_MODNAME
, NULL
);
177 if (!csio_debugfs_root
)
178 pr_warn("Could not create debugfs entry, continuing\n");
184 * csio_dfs_exit - debugfs cleanup for the module.
189 debugfs_remove(csio_debugfs_root
);
193 * csio_pci_init - PCI initialization.
195 * @bars: Bitmask of bars to be requested.
197 * Initializes the PCI function by enabling MMIO, setting bus
198 * mastership and setting DMA mask.
201 csio_pci_init(struct pci_dev
*pdev
, int *bars
)
205 *bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
207 if (pci_enable_device_mem(pdev
))
210 if (pci_request_selected_regions(pdev
, *bars
, KBUILD_MODNAME
))
211 goto err_disable_device
;
213 pci_set_master(pdev
);
214 pci_try_set_mwi(pdev
);
216 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64))) {
217 pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
218 } else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32))) {
219 pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
221 dev_err(&pdev
->dev
, "No suitable DMA available.\n");
222 goto err_release_regions
;
228 pci_release_selected_regions(pdev
, *bars
);
230 pci_disable_device(pdev
);
237 * csio_pci_exit - PCI unitialization.
239 * @bars: Bars to be released.
243 csio_pci_exit(struct pci_dev
*pdev
, int *bars
)
245 pci_release_selected_regions(pdev
, *bars
);
246 pci_disable_device(pdev
);
250 * csio_hw_init_workers - Initialize the HW module's worker threads.
255 csio_hw_init_workers(struct csio_hw
*hw
)
257 INIT_WORK(&hw
->evtq_work
, csio_evtq_worker
);
261 csio_hw_exit_workers(struct csio_hw
*hw
)
263 cancel_work_sync(&hw
->evtq_work
);
264 flush_scheduled_work();
268 csio_create_queues(struct csio_hw
*hw
)
271 struct csio_mgmtm
*mgmtm
= csio_hw_to_mgmtm(hw
);
273 struct csio_scsi_cpu_info
*info
;
275 if (hw
->flags
& CSIO_HWF_Q_FW_ALLOCED
)
278 if (hw
->intr_mode
!= CSIO_IM_MSIX
) {
279 rv
= csio_wr_iq_create(hw
, NULL
, hw
->intr_iq_idx
,
280 0, hw
->pport
[0].portid
, false, NULL
);
282 csio_err(hw
, " Forward Interrupt IQ failed!: %d\n", rv
);
288 rv
= csio_wr_iq_create(hw
, NULL
, hw
->fwevt_iq_idx
,
289 csio_get_fwevt_intr_idx(hw
),
290 hw
->pport
[0].portid
, true, NULL
);
292 csio_err(hw
, "FW event IQ config failed!: %d\n", rv
);
296 /* Create mgmt queue */
297 rv
= csio_wr_eq_create(hw
, NULL
, mgmtm
->eq_idx
,
298 mgmtm
->iq_idx
, hw
->pport
[0].portid
, NULL
);
301 csio_err(hw
, "Mgmt EQ create failed!: %d\n", rv
);
305 /* Create SCSI queues */
306 for (i
= 0; i
< hw
->num_pports
; i
++) {
307 info
= &hw
->scsi_cpu_info
[i
];
309 for (j
= 0; j
< info
->max_cpus
; j
++) {
310 struct csio_scsi_qset
*sqset
= &hw
->sqset
[i
][j
];
312 rv
= csio_wr_iq_create(hw
, NULL
, sqset
->iq_idx
,
313 sqset
->intr_idx
, i
, false, NULL
);
316 "SCSI module IQ config failed [%d][%d]:%d\n",
320 rv
= csio_wr_eq_create(hw
, NULL
, sqset
->eq_idx
,
321 sqset
->iq_idx
, i
, NULL
);
324 "SCSI module EQ config failed [%d][%d]:%d\n",
329 } /* For all ports */
331 hw
->flags
|= CSIO_HWF_Q_FW_ALLOCED
;
334 csio_wr_destroy_queues(hw
, true);
339 * csio_config_queues - Configure the DMA queues.
342 * Allocates memory for queues are registers them with FW.
345 csio_config_queues(struct csio_hw
*hw
)
347 int i
, j
, idx
, k
= 0;
349 struct csio_scsi_qset
*sqset
;
350 struct csio_mgmtm
*mgmtm
= csio_hw_to_mgmtm(hw
);
351 struct csio_scsi_qset
*orig
;
352 struct csio_scsi_cpu_info
*info
;
354 if (hw
->flags
& CSIO_HWF_Q_MEM_ALLOCED
)
355 return csio_create_queues(hw
);
357 /* Calculate number of SCSI queues for MSIX we would like */
358 hw
->num_scsi_msix_cpus
= num_online_cpus();
359 hw
->num_sqsets
= num_online_cpus() * hw
->num_pports
;
361 if (hw
->num_sqsets
> CSIO_MAX_SCSI_QSETS
) {
362 hw
->num_sqsets
= CSIO_MAX_SCSI_QSETS
;
363 hw
->num_scsi_msix_cpus
= CSIO_MAX_SCSI_CPU
;
366 /* Initialize max_cpus, may get reduced during msix allocations */
367 for (i
= 0; i
< hw
->num_pports
; i
++)
368 hw
->scsi_cpu_info
[i
].max_cpus
= hw
->num_scsi_msix_cpus
;
370 csio_dbg(hw
, "nsqsets:%d scpus:%d\n",
371 hw
->num_sqsets
, hw
->num_scsi_msix_cpus
);
373 csio_intr_enable(hw
);
375 if (hw
->intr_mode
!= CSIO_IM_MSIX
) {
377 /* Allocate Forward interrupt iq. */
378 hw
->intr_iq_idx
= csio_wr_alloc_q(hw
, CSIO_INTR_IQSIZE
,
379 CSIO_INTR_WRSIZE
, CSIO_INGRESS
,
380 (void *)hw
, 0, 0, NULL
);
381 if (hw
->intr_iq_idx
== -1) {
383 "Forward interrupt queue creation failed\n");
388 /* Allocate the FW evt queue */
389 hw
->fwevt_iq_idx
= csio_wr_alloc_q(hw
, CSIO_FWEVT_IQSIZE
,
391 CSIO_INGRESS
, (void *)hw
,
392 CSIO_FWEVT_FLBUFS
, 0,
393 csio_fwevt_intx_handler
);
394 if (hw
->fwevt_iq_idx
== -1) {
395 csio_err(hw
, "FW evt queue creation failed\n");
399 /* Allocate the mgmt queue */
400 mgmtm
->eq_idx
= csio_wr_alloc_q(hw
, CSIO_MGMT_EQSIZE
,
402 CSIO_EGRESS
, (void *)hw
, 0, 0, NULL
);
403 if (mgmtm
->eq_idx
== -1) {
404 csio_err(hw
, "Failed to alloc egress queue for mgmt module\n");
408 /* Use FW IQ for MGMT req completion */
409 mgmtm
->iq_idx
= hw
->fwevt_iq_idx
;
411 /* Allocate SCSI queues */
412 for (i
= 0; i
< hw
->num_pports
; i
++) {
413 info
= &hw
->scsi_cpu_info
[i
];
415 for (j
= 0; j
< hw
->num_scsi_msix_cpus
; j
++) {
416 sqset
= &hw
->sqset
[i
][j
];
418 if (j
>= info
->max_cpus
) {
419 k
= j
% info
->max_cpus
;
420 orig
= &hw
->sqset
[i
][k
];
421 sqset
->eq_idx
= orig
->eq_idx
;
422 sqset
->iq_idx
= orig
->iq_idx
;
426 idx
= csio_wr_alloc_q(hw
, csio_scsi_eqsize
, 0,
427 CSIO_EGRESS
, (void *)hw
, 0, 0,
430 csio_err(hw
, "EQ creation failed for idx:%d\n",
437 idx
= csio_wr_alloc_q(hw
, CSIO_SCSI_IQSIZE
,
438 CSIO_SCSI_IQ_WRSZ
, CSIO_INGRESS
,
440 csio_scsi_intx_handler
);
442 csio_err(hw
, "IQ creation failed for idx:%d\n",
448 } /* For all ports */
450 hw
->flags
|= CSIO_HWF_Q_MEM_ALLOCED
;
452 rv
= csio_create_queues(hw
);
457 * Now request IRQs for the vectors. In the event of a failure,
458 * cleanup is handled internally by this function.
460 rv
= csio_request_irqs(hw
);
467 csio_intr_disable(hw
, false);
473 csio_resource_alloc(struct csio_hw
*hw
)
475 struct csio_wrm
*wrm
= csio_hw_to_wrm(hw
);
478 wrm
->num_q
= ((CSIO_MAX_SCSI_QSETS
* 2) + CSIO_HW_NIQ
+
479 CSIO_HW_NEQ
+ CSIO_HW_NFLQ
+ CSIO_HW_NINTXQ
);
481 hw
->mb_mempool
= mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ
,
482 sizeof(struct csio_mb
));
486 hw
->rnode_mempool
= mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ
,
487 sizeof(struct csio_rnode
));
488 if (!hw
->rnode_mempool
)
489 goto err_free_mb_mempool
;
491 hw
->scsi_pci_pool
= pci_pool_create("csio_scsi_pci_pool", hw
->pdev
,
492 CSIO_SCSI_RSP_LEN
, 8, 0);
493 if (!hw
->scsi_pci_pool
)
494 goto err_free_rn_pool
;
499 mempool_destroy(hw
->rnode_mempool
);
500 hw
->rnode_mempool
= NULL
;
502 mempool_destroy(hw
->mb_mempool
);
503 hw
->mb_mempool
= NULL
;
509 csio_resource_free(struct csio_hw
*hw
)
511 pci_pool_destroy(hw
->scsi_pci_pool
);
512 hw
->scsi_pci_pool
= NULL
;
513 mempool_destroy(hw
->rnode_mempool
);
514 hw
->rnode_mempool
= NULL
;
515 mempool_destroy(hw
->mb_mempool
);
516 hw
->mb_mempool
= NULL
;
520 * csio_hw_alloc - Allocate and initialize the HW module.
523 * Allocates HW structure, DMA, memory resources, maps BARS to
524 * host memory and initializes HW module.
526 static struct csio_hw
*csio_hw_alloc(struct pci_dev
*pdev
)
530 hw
= kzalloc(sizeof(struct csio_hw
), GFP_KERNEL
);
535 strncpy(hw
->drv_version
, CSIO_DRV_VERSION
, 32);
537 /* memory pool/DMA pool allocation */
538 if (csio_resource_alloc(hw
))
541 /* Get the start address of registers from BAR 0 */
542 hw
->regstart
= ioremap_nocache(pci_resource_start(pdev
, 0),
543 pci_resource_len(pdev
, 0));
545 csio_err(hw
, "Could not map BAR 0, regstart = %p\n",
547 goto err_resource_free
;
550 csio_hw_init_workers(hw
);
552 if (csio_hw_init(hw
))
557 csio_dbg(hw
, "hw:%p\n", hw
);
562 csio_hw_exit_workers(hw
);
563 iounmap(hw
->regstart
);
565 csio_resource_free(hw
);
573 * csio_hw_free - Uninitialize and free the HW module.
576 * Disable interrupts, uninit the HW module, free resources, free hw.
579 csio_hw_free(struct csio_hw
*hw
)
581 csio_intr_disable(hw
, true);
582 csio_hw_exit_workers(hw
);
584 iounmap(hw
->regstart
);
585 csio_dfs_destroy(hw
);
586 csio_resource_free(hw
);
591 * csio_shost_init - Create and initialize the lnode module.
592 * @hw: The HW module.
593 * @dev: The device associated with this invocation.
594 * @probe: Called from probe context or not?
595 * @os_pln: Parent lnode if any.
597 * Allocates lnode structure via scsi_host_alloc, initializes
598 * shost, initializes lnode module and registers with SCSI ML
599 * via scsi_host_add. This function is shared between physical and
600 * virtual node ports.
603 csio_shost_init(struct csio_hw
*hw
, struct device
*dev
,
604 bool probe
, struct csio_lnode
*pln
)
606 struct Scsi_Host
*shost
= NULL
;
607 struct csio_lnode
*ln
;
609 csio_fcoe_shost_template
.cmd_per_lun
= csio_lun_qdepth
;
610 csio_fcoe_shost_vport_template
.cmd_per_lun
= csio_lun_qdepth
;
613 * hw->pdev is the physical port's PCI dev structure,
614 * which will be different from the NPIV dev structure.
616 if (dev
== &hw
->pdev
->dev
)
617 shost
= scsi_host_alloc(
618 &csio_fcoe_shost_template
,
619 sizeof(struct csio_lnode
));
621 shost
= scsi_host_alloc(
622 &csio_fcoe_shost_vport_template
,
623 sizeof(struct csio_lnode
));
628 ln
= shost_priv(shost
);
629 memset(ln
, 0, sizeof(struct csio_lnode
));
631 /* Link common lnode to this lnode */
632 ln
->dev_num
= (shost
->host_no
<< 16);
634 shost
->can_queue
= CSIO_MAX_QUEUE
;
636 shost
->unique_id
= shost
->host_no
;
637 shost
->max_cmd_len
= 16; /* Max CDB length supported */
638 shost
->max_id
= min_t(uint32_t, csio_fcoe_rnodes
,
639 hw
->fres_info
.max_ssns
);
640 shost
->max_lun
= CSIO_MAX_LUN
;
641 if (dev
== &hw
->pdev
->dev
)
642 shost
->transportt
= csio_fcoe_transport
;
644 shost
->transportt
= csio_fcoe_transport_vport
;
650 /* Other initialization here: Common, Transport specific */
651 if (csio_lnode_init(ln
, hw
, pln
))
654 if (scsi_add_host(shost
, dev
))
662 scsi_host_put(shost
);
668 * csio_shost_exit - De-instantiate the shost.
669 * @ln: The lnode module corresponding to the shost.
673 csio_shost_exit(struct csio_lnode
*ln
)
675 struct Scsi_Host
*shost
= csio_ln_to_shost(ln
);
676 struct csio_hw
*hw
= csio_lnode_to_hw(ln
);
678 /* Inform transport */
679 fc_remove_host(shost
);
682 scsi_remove_host(shost
);
684 /* Flush all the events, so that any rnode removal events
685 * already queued are all handled, before we remove the lnode.
687 spin_lock_irq(&hw
->lock
);
689 spin_unlock_irq(&hw
->lock
);
692 scsi_host_put(shost
);
696 csio_lnode_alloc(struct csio_hw
*hw
)
698 return csio_shost_init(hw
, &hw
->pdev
->dev
, false, NULL
);
702 csio_lnodes_block_request(struct csio_hw
*hw
)
704 struct Scsi_Host
*shost
;
705 struct csio_lnode
*sln
;
706 struct csio_lnode
*ln
;
707 struct list_head
*cur_ln
, *cur_cln
;
708 struct csio_lnode
**lnode_list
;
711 lnode_list
= kzalloc((sizeof(struct csio_lnode
*) * hw
->num_lns
),
714 csio_err(hw
, "Failed to allocate lnodes_list");
718 spin_lock_irq(&hw
->lock
);
719 /* Traverse sibling lnodes */
720 list_for_each(cur_ln
, &hw
->sln_head
) {
721 sln
= (struct csio_lnode
*) cur_ln
;
722 lnode_list
[cur_cnt
++] = sln
;
724 /* Traverse children lnodes */
725 list_for_each(cur_cln
, &sln
->cln_head
)
726 lnode_list
[cur_cnt
++] = (struct csio_lnode
*) cur_cln
;
728 spin_unlock_irq(&hw
->lock
);
730 for (ii
= 0; ii
< cur_cnt
; ii
++) {
731 csio_dbg(hw
, "Blocking IOs on lnode: %p\n", lnode_list
[ii
]);
733 shost
= csio_ln_to_shost(ln
);
734 scsi_block_requests(shost
);
741 csio_lnodes_unblock_request(struct csio_hw
*hw
)
743 struct csio_lnode
*ln
;
744 struct Scsi_Host
*shost
;
745 struct csio_lnode
*sln
;
746 struct list_head
*cur_ln
, *cur_cln
;
747 struct csio_lnode
**lnode_list
;
750 lnode_list
= kzalloc((sizeof(struct csio_lnode
*) * hw
->num_lns
),
753 csio_err(hw
, "Failed to allocate lnodes_list");
757 spin_lock_irq(&hw
->lock
);
758 /* Traverse sibling lnodes */
759 list_for_each(cur_ln
, &hw
->sln_head
) {
760 sln
= (struct csio_lnode
*) cur_ln
;
761 lnode_list
[cur_cnt
++] = sln
;
763 /* Traverse children lnodes */
764 list_for_each(cur_cln
, &sln
->cln_head
)
765 lnode_list
[cur_cnt
++] = (struct csio_lnode
*) cur_cln
;
767 spin_unlock_irq(&hw
->lock
);
769 for (ii
= 0; ii
< cur_cnt
; ii
++) {
770 csio_dbg(hw
, "unblocking IOs on lnode: %p\n", lnode_list
[ii
]);
772 shost
= csio_ln_to_shost(ln
);
773 scsi_unblock_requests(shost
);
779 csio_lnodes_block_by_port(struct csio_hw
*hw
, uint8_t portid
)
781 struct csio_lnode
*ln
;
782 struct Scsi_Host
*shost
;
783 struct csio_lnode
*sln
;
784 struct list_head
*cur_ln
, *cur_cln
;
785 struct csio_lnode
**lnode_list
;
788 lnode_list
= kzalloc((sizeof(struct csio_lnode
*) * hw
->num_lns
),
791 csio_err(hw
, "Failed to allocate lnodes_list");
795 spin_lock_irq(&hw
->lock
);
796 /* Traverse sibling lnodes */
797 list_for_each(cur_ln
, &hw
->sln_head
) {
798 sln
= (struct csio_lnode
*) cur_ln
;
799 if (sln
->portid
!= portid
)
802 lnode_list
[cur_cnt
++] = sln
;
804 /* Traverse children lnodes */
805 list_for_each(cur_cln
, &sln
->cln_head
)
806 lnode_list
[cur_cnt
++] = (struct csio_lnode
*) cur_cln
;
808 spin_unlock_irq(&hw
->lock
);
810 for (ii
= 0; ii
< cur_cnt
; ii
++) {
811 csio_dbg(hw
, "Blocking IOs on lnode: %p\n", lnode_list
[ii
]);
813 shost
= csio_ln_to_shost(ln
);
814 scsi_block_requests(shost
);
820 csio_lnodes_unblock_by_port(struct csio_hw
*hw
, uint8_t portid
)
822 struct csio_lnode
*ln
;
823 struct Scsi_Host
*shost
;
824 struct csio_lnode
*sln
;
825 struct list_head
*cur_ln
, *cur_cln
;
826 struct csio_lnode
**lnode_list
;
829 lnode_list
= kzalloc((sizeof(struct csio_lnode
*) * hw
->num_lns
),
832 csio_err(hw
, "Failed to allocate lnodes_list");
836 spin_lock_irq(&hw
->lock
);
837 /* Traverse sibling lnodes */
838 list_for_each(cur_ln
, &hw
->sln_head
) {
839 sln
= (struct csio_lnode
*) cur_ln
;
840 if (sln
->portid
!= portid
)
842 lnode_list
[cur_cnt
++] = sln
;
844 /* Traverse children lnodes */
845 list_for_each(cur_cln
, &sln
->cln_head
)
846 lnode_list
[cur_cnt
++] = (struct csio_lnode
*) cur_cln
;
848 spin_unlock_irq(&hw
->lock
);
850 for (ii
= 0; ii
< cur_cnt
; ii
++) {
851 csio_dbg(hw
, "unblocking IOs on lnode: %p\n", lnode_list
[ii
]);
853 shost
= csio_ln_to_shost(ln
);
854 scsi_unblock_requests(shost
);
860 csio_lnodes_exit(struct csio_hw
*hw
, bool npiv
)
862 struct csio_lnode
*sln
;
863 struct csio_lnode
*ln
;
864 struct list_head
*cur_ln
, *cur_cln
;
865 struct csio_lnode
**lnode_list
;
868 lnode_list
= kzalloc((sizeof(struct csio_lnode
*) * hw
->num_lns
),
871 csio_err(hw
, "lnodes_exit: Failed to allocate lnodes_list.\n");
875 /* Get all child lnodes(NPIV ports) */
876 spin_lock_irq(&hw
->lock
);
877 list_for_each(cur_ln
, &hw
->sln_head
) {
878 sln
= (struct csio_lnode
*) cur_ln
;
880 /* Traverse children lnodes */
881 list_for_each(cur_cln
, &sln
->cln_head
)
882 lnode_list
[cur_cnt
++] = (struct csio_lnode
*) cur_cln
;
884 spin_unlock_irq(&hw
->lock
);
886 /* Delete NPIV lnodes */
887 for (ii
= 0; ii
< cur_cnt
; ii
++) {
888 csio_dbg(hw
, "Deleting child lnode: %p\n", lnode_list
[ii
]);
890 fc_vport_terminate(ln
->fc_vport
);
893 /* Delete only npiv lnodes */
898 /* Get all physical lnodes */
899 spin_lock_irq(&hw
->lock
);
900 /* Traverse sibling lnodes */
901 list_for_each(cur_ln
, &hw
->sln_head
) {
902 sln
= (struct csio_lnode
*) cur_ln
;
903 lnode_list
[cur_cnt
++] = sln
;
905 spin_unlock_irq(&hw
->lock
);
907 /* Delete physical lnodes */
908 for (ii
= 0; ii
< cur_cnt
; ii
++) {
909 csio_dbg(hw
, "Deleting parent lnode: %p\n", lnode_list
[ii
]);
910 csio_shost_exit(lnode_list
[ii
]);
918 * csio_lnode_init_post: Set lnode attributes after starting HW.
923 csio_lnode_init_post(struct csio_lnode
*ln
)
925 struct Scsi_Host
*shost
= csio_ln_to_shost(ln
);
927 csio_fchost_attr_init(ln
);
929 scsi_scan_host(shost
);
933 * csio_probe_one - Instantiate this function.
937 * This is the .probe() callback of the driver. This function:
938 * - Initializes the PCI function by enabling MMIO, setting bus
939 * mastership and setting DMA mask.
940 * - Allocates HW structure, DMA, memory resources, maps BARS to
941 * host memory and initializes HW module.
942 * - Allocates lnode structure via scsi_host_alloc, initializes
943 * shost, initialized lnode module and registers with SCSI ML
945 * - Enables interrupts, and starts the chip by kicking off the
947 * - Once hardware is ready, initiated scan of the host via
950 static int csio_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
956 struct csio_lnode
*ln
;
958 rv
= csio_pci_init(pdev
, &bars
);
962 hw
= csio_hw_alloc(pdev
);
968 pci_set_drvdata(pdev
, hw
);
970 if (csio_hw_start(hw
) != 0) {
972 "Failed to start FW, continuing in debug mode.\n");
976 sprintf(hw
->fwrev_str
, "%u.%u.%u.%u\n",
977 FW_HDR_FW_VER_MAJOR_GET(hw
->fwrev
),
978 FW_HDR_FW_VER_MINOR_GET(hw
->fwrev
),
979 FW_HDR_FW_VER_MICRO_GET(hw
->fwrev
),
980 FW_HDR_FW_VER_BUILD_GET(hw
->fwrev
));
982 for (i
= 0; i
< hw
->num_pports
; i
++) {
983 ln
= csio_shost_init(hw
, &pdev
->dev
, true, NULL
);
988 /* Initialize portid */
989 ln
->portid
= hw
->pport
[i
].portid
;
991 spin_lock_irq(&hw
->lock
);
992 if (csio_lnode_start(ln
) != 0)
994 spin_unlock_irq(&hw
->lock
);
999 csio_lnode_init_post(ln
);
1003 goto err_lnode_exit
;
1008 csio_lnodes_block_request(hw
);
1009 spin_lock_irq(&hw
->lock
);
1011 spin_unlock_irq(&hw
->lock
);
1012 csio_lnodes_unblock_request(hw
);
1013 csio_lnodes_exit(hw
, 0);
1016 csio_pci_exit(pdev
, &bars
);
1018 dev_err(&pdev
->dev
, "probe of device failed: %d\n", rv
);
1023 * csio_remove_one - Remove one instance of the driver at this PCI function.
1026 * Used during hotplug operation.
1028 static void csio_remove_one(struct pci_dev
*pdev
)
1030 struct csio_hw
*hw
= pci_get_drvdata(pdev
);
1031 int bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
1033 csio_lnodes_block_request(hw
);
1034 spin_lock_irq(&hw
->lock
);
1036 /* Stops lnode, Rnode s/m
1038 * All sessions with remote ports are unregistered.
1041 spin_unlock_irq(&hw
->lock
);
1042 csio_lnodes_unblock_request(hw
);
1044 csio_lnodes_exit(hw
, 0);
1046 csio_pci_exit(pdev
, &bars
);
1050 * csio_pci_error_detected - PCI error was detected
1054 static pci_ers_result_t
1055 csio_pci_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
1057 struct csio_hw
*hw
= pci_get_drvdata(pdev
);
1059 csio_lnodes_block_request(hw
);
1060 spin_lock_irq(&hw
->lock
);
1062 /* Post PCI error detected evt to HW s/m
1063 * HW s/m handles this evt by quiescing IOs, unregisters rports
1064 * and finally takes the device to offline.
1066 csio_post_event(&hw
->sm
, CSIO_HWE_PCIERR_DETECTED
);
1067 spin_unlock_irq(&hw
->lock
);
1068 csio_lnodes_unblock_request(hw
);
1069 csio_lnodes_exit(hw
, 0);
1070 csio_intr_disable(hw
, true);
1071 pci_disable_device(pdev
);
1072 return state
== pci_channel_io_perm_failure
?
1073 PCI_ERS_RESULT_DISCONNECT
: PCI_ERS_RESULT_NEED_RESET
;
1077 * csio_pci_slot_reset - PCI slot has been reset.
1081 static pci_ers_result_t
1082 csio_pci_slot_reset(struct pci_dev
*pdev
)
1084 struct csio_hw
*hw
= pci_get_drvdata(pdev
);
1087 if (pci_enable_device(pdev
)) {
1088 dev_err(&pdev
->dev
, "cannot re-enable device in slot reset\n");
1089 return PCI_ERS_RESULT_DISCONNECT
;
1092 pci_set_master(pdev
);
1093 pci_restore_state(pdev
);
1094 pci_save_state(pdev
);
1095 pci_cleanup_aer_uncorrect_error_status(pdev
);
1097 /* Bring HW s/m to ready state.
1098 * but don't resume IOs.
1100 spin_lock_irq(&hw
->lock
);
1101 csio_post_event(&hw
->sm
, CSIO_HWE_PCIERR_SLOT_RESET
);
1102 ready
= csio_is_hw_ready(hw
);
1103 spin_unlock_irq(&hw
->lock
);
1106 return PCI_ERS_RESULT_RECOVERED
;
1108 dev_err(&pdev
->dev
, "Can't initialize HW when in slot reset\n");
1109 return PCI_ERS_RESULT_DISCONNECT
;
1114 * csio_pci_resume - Resume normal operations
1119 csio_pci_resume(struct pci_dev
*pdev
)
1121 struct csio_hw
*hw
= pci_get_drvdata(pdev
);
1122 struct csio_lnode
*ln
;
1126 /* Bring the LINK UP and Resume IO */
1128 for (i
= 0; i
< hw
->num_pports
; i
++) {
1129 ln
= csio_shost_init(hw
, &pdev
->dev
, true, NULL
);
1134 /* Initialize portid */
1135 ln
->portid
= hw
->pport
[i
].portid
;
1137 spin_lock_irq(&hw
->lock
);
1138 if (csio_lnode_start(ln
) != 0)
1140 spin_unlock_irq(&hw
->lock
);
1145 csio_lnode_init_post(ln
);
1149 goto err_resume_exit
;
1154 csio_lnodes_block_request(hw
);
1155 spin_lock_irq(&hw
->lock
);
1157 spin_unlock_irq(&hw
->lock
);
1158 csio_lnodes_unblock_request(hw
);
1159 csio_lnodes_exit(hw
, 0);
1161 dev_err(&pdev
->dev
, "resume of device failed: %d\n", rv
);
1164 static struct pci_error_handlers csio_err_handler
= {
1165 .error_detected
= csio_pci_error_detected
,
1166 .slot_reset
= csio_pci_slot_reset
,
1167 .resume
= csio_pci_resume
,
1170 static const struct pci_device_id csio_pci_tbl
[] = {
1171 CSIO_DEVICE(CSIO_DEVID_T440DBG_FCOE
, 0), /* T4 DEBUG FCOE */
1172 CSIO_DEVICE(CSIO_DEVID_T420CR_FCOE
, 0), /* T420CR FCOE */
1173 CSIO_DEVICE(CSIO_DEVID_T422CR_FCOE
, 0), /* T422CR FCOE */
1174 CSIO_DEVICE(CSIO_DEVID_T440CR_FCOE
, 0), /* T440CR FCOE */
1175 CSIO_DEVICE(CSIO_DEVID_T420BCH_FCOE
, 0), /* T420BCH FCOE */
1176 CSIO_DEVICE(CSIO_DEVID_T440BCH_FCOE
, 0), /* T440BCH FCOE */
1177 CSIO_DEVICE(CSIO_DEVID_T440CH_FCOE
, 0), /* T440CH FCOE */
1178 CSIO_DEVICE(CSIO_DEVID_T420SO_FCOE
, 0), /* T420SO FCOE */
1179 CSIO_DEVICE(CSIO_DEVID_T420CX_FCOE
, 0), /* T420CX FCOE */
1180 CSIO_DEVICE(CSIO_DEVID_T420BT_FCOE
, 0), /* T420BT FCOE */
1181 CSIO_DEVICE(CSIO_DEVID_T404BT_FCOE
, 0), /* T404BT FCOE */
1182 CSIO_DEVICE(CSIO_DEVID_B420_FCOE
, 0), /* B420 FCOE */
1183 CSIO_DEVICE(CSIO_DEVID_B404_FCOE
, 0), /* B404 FCOE */
1184 CSIO_DEVICE(CSIO_DEVID_T480CR_FCOE
, 0), /* T480 CR FCOE */
1185 CSIO_DEVICE(CSIO_DEVID_T440LPCR_FCOE
, 0), /* T440 LP-CR FCOE */
1186 CSIO_DEVICE(CSIO_DEVID_AMSTERDAM_T4_FCOE
, 0), /* AMSTERDAM T4 FCOE */
1187 CSIO_DEVICE(CSIO_DEVID_HUAWEI_T480_FCOE
, 0), /* HUAWEI T480 FCOE */
1188 CSIO_DEVICE(CSIO_DEVID_HUAWEI_T440_FCOE
, 0), /* HUAWEI T440 FCOE */
1189 CSIO_DEVICE(CSIO_DEVID_HUAWEI_STG310_FCOE
, 0), /* HUAWEI STG FCOE */
1190 CSIO_DEVICE(CSIO_DEVID_ACROMAG_XMC_XAUI
, 0), /* ACROMAG XAUI FCOE */
1191 CSIO_DEVICE(CSIO_DEVID_QUANTA_MEZZ_SFP_FCOE
, 0),/* QUANTA MEZZ FCOE */
1192 CSIO_DEVICE(CSIO_DEVID_HUAWEI_10GT_FCOE
, 0), /* HUAWEI 10GT FCOE */
1193 CSIO_DEVICE(CSIO_DEVID_HUAWEI_T440_TOE_FCOE
, 0),/* HUAWEI T4 TOE FCOE */
1194 CSIO_DEVICE(CSIO_DEVID_T580DBG_FCOE
, 0), /* T5 DEBUG FCOE */
1195 CSIO_DEVICE(CSIO_DEVID_T520CR_FCOE
, 0), /* T520CR FCOE */
1196 CSIO_DEVICE(CSIO_DEVID_T522CR_FCOE
, 0), /* T522CR FCOE */
1197 CSIO_DEVICE(CSIO_DEVID_T540CR_FCOE
, 0), /* T540CR FCOE */
1198 CSIO_DEVICE(CSIO_DEVID_T520BCH_FCOE
, 0), /* T520BCH FCOE */
1199 CSIO_DEVICE(CSIO_DEVID_T540BCH_FCOE
, 0), /* T540BCH FCOE */
1200 CSIO_DEVICE(CSIO_DEVID_T540CH_FCOE
, 0), /* T540CH FCOE */
1201 CSIO_DEVICE(CSIO_DEVID_T520SO_FCOE
, 0), /* T520SO FCOE */
1202 CSIO_DEVICE(CSIO_DEVID_T520CX_FCOE
, 0), /* T520CX FCOE */
1203 CSIO_DEVICE(CSIO_DEVID_T520BT_FCOE
, 0), /* T520BT FCOE */
1204 CSIO_DEVICE(CSIO_DEVID_T504BT_FCOE
, 0), /* T504BT FCOE */
1205 CSIO_DEVICE(CSIO_DEVID_B520_FCOE
, 0), /* B520 FCOE */
1206 CSIO_DEVICE(CSIO_DEVID_B504_FCOE
, 0), /* B504 FCOE */
1207 CSIO_DEVICE(CSIO_DEVID_T580CR2_FCOE
, 0), /* T580 CR FCOE */
1208 CSIO_DEVICE(CSIO_DEVID_T540LPCR_FCOE
, 0), /* T540 LP-CR FCOE */
1209 CSIO_DEVICE(CSIO_DEVID_AMSTERDAM_T5_FCOE
, 0), /* AMSTERDAM T5 FCOE */
1210 CSIO_DEVICE(CSIO_DEVID_T580LPCR_FCOE
, 0), /* T580 LP-CR FCOE */
1211 CSIO_DEVICE(CSIO_DEVID_T520LLCR_FCOE
, 0), /* T520 LL-CR FCOE */
1212 CSIO_DEVICE(CSIO_DEVID_T560CR_FCOE
, 0), /* T560 CR FCOE */
1213 CSIO_DEVICE(CSIO_DEVID_T580CR_FCOE
, 0), /* T580 CR FCOE */
1214 { 0, 0, 0, 0, 0, 0, 0 }
1218 static struct pci_driver csio_pci_driver
= {
1219 .name
= KBUILD_MODNAME
,
1221 .owner
= THIS_MODULE
,
1223 .id_table
= csio_pci_tbl
,
1224 .probe
= csio_probe_one
,
1225 .remove
= csio_remove_one
,
1226 .err_handler
= &csio_err_handler
,
1230 * csio_init - Chelsio storage driver initialization function.
1238 pr_info("%s %s\n", CSIO_DRV_DESC
, CSIO_DRV_VERSION
);
1242 csio_fcoe_transport
= fc_attach_transport(&csio_fc_transport_funcs
);
1243 if (!csio_fcoe_transport
)
1246 csio_fcoe_transport_vport
=
1247 fc_attach_transport(&csio_fc_transport_vport_funcs
);
1248 if (!csio_fcoe_transport_vport
)
1251 rv
= pci_register_driver(&csio_pci_driver
);
1258 fc_release_transport(csio_fcoe_transport_vport
);
1260 fc_release_transport(csio_fcoe_transport
);
1267 * csio_exit - Chelsio storage driver uninitialization .
1269 * Function that gets called in the unload path.
1274 pci_unregister_driver(&csio_pci_driver
);
1276 fc_release_transport(csio_fcoe_transport_vport
);
1277 fc_release_transport(csio_fcoe_transport
);
1280 module_init(csio_init
);
1281 module_exit(csio_exit
);
1282 MODULE_AUTHOR(CSIO_DRV_AUTHOR
);
1283 MODULE_DESCRIPTION(CSIO_DRV_DESC
);
1284 MODULE_LICENSE(CSIO_DRV_LICENSE
);
1285 MODULE_DEVICE_TABLE(pci
, csio_pci_tbl
);
1286 MODULE_VERSION(CSIO_DRV_VERSION
);
1287 MODULE_FIRMWARE(FW_FNAME_T4
);
1288 MODULE_FIRMWARE(FW_FNAME_T5
);