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1332 lines
34 KiB
1332 lines
34 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (c) 2005-2014 Brocade Communications Systems, Inc. |
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* Copyright (c) 2014- QLogic Corporation. |
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* All rights reserved |
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* www.qlogic.com |
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* |
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* Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter. |
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*/ |
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|
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/* |
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* bfad_im.c Linux driver IM module. |
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*/ |
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|
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#include <linux/export.h> |
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|
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#include "bfad_drv.h" |
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#include "bfad_im.h" |
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#include "bfa_fcs.h" |
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|
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BFA_TRC_FILE(LDRV, IM); |
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|
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DEFINE_IDR(bfad_im_port_index); |
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struct scsi_transport_template *bfad_im_scsi_transport_template; |
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struct scsi_transport_template *bfad_im_scsi_vport_transport_template; |
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static void bfad_im_itnim_work_handler(struct work_struct *work); |
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static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd); |
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static int bfad_im_slave_alloc(struct scsi_device *sdev); |
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static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, |
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struct bfad_itnim_s *itnim); |
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|
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void |
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bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio, |
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enum bfi_ioim_status io_status, u8 scsi_status, |
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int sns_len, u8 *sns_info, s32 residue) |
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{ |
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; |
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struct bfad_s *bfad = drv; |
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struct bfad_itnim_data_s *itnim_data; |
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struct bfad_itnim_s *itnim; |
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u8 host_status = DID_OK; |
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|
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switch (io_status) { |
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case BFI_IOIM_STS_OK: |
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bfa_trc(bfad, scsi_status); |
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scsi_set_resid(cmnd, 0); |
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|
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if (sns_len > 0) { |
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bfa_trc(bfad, sns_len); |
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if (sns_len > SCSI_SENSE_BUFFERSIZE) |
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sns_len = SCSI_SENSE_BUFFERSIZE; |
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memcpy(cmnd->sense_buffer, sns_info, sns_len); |
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} |
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|
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if (residue > 0) { |
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bfa_trc(bfad, residue); |
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scsi_set_resid(cmnd, residue); |
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if (!sns_len && (scsi_status == SAM_STAT_GOOD) && |
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(scsi_bufflen(cmnd) - residue) < |
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cmnd->underflow) { |
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bfa_trc(bfad, 0); |
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host_status = DID_ERROR; |
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} |
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} |
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cmnd->result = host_status << 16 | scsi_status; |
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|
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break; |
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case BFI_IOIM_STS_TIMEDOUT: |
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cmnd->result = DID_TIME_OUT << 16; |
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break; |
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case BFI_IOIM_STS_PATHTOV: |
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cmnd->result = DID_TRANSPORT_DISRUPTED << 16; |
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break; |
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default: |
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cmnd->result = DID_ERROR << 16; |
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} |
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|
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/* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ |
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if (cmnd->device->host != NULL) |
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scsi_dma_unmap(cmnd); |
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|
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cmnd->host_scribble = NULL; |
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bfa_trc(bfad, cmnd->result); |
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|
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itnim_data = cmnd->device->hostdata; |
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if (itnim_data) { |
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itnim = itnim_data->itnim; |
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if (!cmnd->result && itnim && |
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(bfa_lun_queue_depth > cmnd->device->queue_depth)) { |
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/* Queue depth adjustment for good status completion */ |
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bfad_ramp_up_qdepth(itnim, cmnd->device); |
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} else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) { |
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/* qfull handling */ |
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bfad_handle_qfull(itnim, cmnd->device); |
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} |
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} |
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cmnd->scsi_done(cmnd); |
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} |
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void |
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bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio) |
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{ |
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; |
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struct bfad_itnim_data_s *itnim_data; |
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struct bfad_itnim_s *itnim; |
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|
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cmnd->result = DID_OK << 16 | SAM_STAT_GOOD; |
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/* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ |
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if (cmnd->device->host != NULL) |
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scsi_dma_unmap(cmnd); |
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|
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cmnd->host_scribble = NULL; |
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|
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/* Queue depth adjustment */ |
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if (bfa_lun_queue_depth > cmnd->device->queue_depth) { |
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itnim_data = cmnd->device->hostdata; |
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if (itnim_data) { |
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itnim = itnim_data->itnim; |
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if (itnim) |
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bfad_ramp_up_qdepth(itnim, cmnd->device); |
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} |
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} |
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cmnd->scsi_done(cmnd); |
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} |
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void |
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bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio) |
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{ |
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; |
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struct bfad_s *bfad = drv; |
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cmnd->result = DID_ERROR << 16; |
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|
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/* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ |
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if (cmnd->device->host != NULL) |
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scsi_dma_unmap(cmnd); |
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|
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bfa_trc(bfad, cmnd->result); |
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cmnd->host_scribble = NULL; |
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} |
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void |
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bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk, |
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enum bfi_tskim_status tsk_status) |
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{ |
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk; |
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wait_queue_head_t *wq; |
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|
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cmnd->SCp.Status |= tsk_status << 1; |
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set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status); |
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wq = (wait_queue_head_t *) cmnd->SCp.ptr; |
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cmnd->SCp.ptr = NULL; |
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|
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if (wq) |
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wake_up(wq); |
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} |
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/* |
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* Scsi_Host_template SCSI host template |
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*/ |
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/* |
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* Scsi_Host template entry, returns BFAD PCI info. |
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*/ |
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static const char * |
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bfad_im_info(struct Scsi_Host *shost) |
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{ |
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static char bfa_buf[256]; |
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struct bfad_im_port_s *im_port = |
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(struct bfad_im_port_s *) shost->hostdata[0]; |
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struct bfad_s *bfad = im_port->bfad; |
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|
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memset(bfa_buf, 0, sizeof(bfa_buf)); |
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snprintf(bfa_buf, sizeof(bfa_buf), |
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"QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s", |
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bfad->pci_name, BFAD_DRIVER_VERSION); |
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return bfa_buf; |
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} |
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|
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/* |
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* Scsi_Host template entry, aborts the specified SCSI command. |
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* |
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* Returns: SUCCESS or FAILED. |
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*/ |
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static int |
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bfad_im_abort_handler(struct scsi_cmnd *cmnd) |
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{ |
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struct Scsi_Host *shost = cmnd->device->host; |
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struct bfad_im_port_s *im_port = |
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(struct bfad_im_port_s *) shost->hostdata[0]; |
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struct bfad_s *bfad = im_port->bfad; |
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struct bfa_ioim_s *hal_io; |
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unsigned long flags; |
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u32 timeout; |
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int rc = FAILED; |
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spin_lock_irqsave(&bfad->bfad_lock, flags); |
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hal_io = (struct bfa_ioim_s *) cmnd->host_scribble; |
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if (!hal_io) { |
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/* IO has been completed, return success */ |
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rc = SUCCESS; |
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goto out; |
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} |
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if (hal_io->dio != (struct bfad_ioim_s *) cmnd) { |
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rc = FAILED; |
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goto out; |
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} |
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bfa_trc(bfad, hal_io->iotag); |
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BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
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"scsi%d: abort cmnd %p iotag %x\n", |
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im_port->shost->host_no, cmnd, hal_io->iotag); |
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(void) bfa_ioim_abort(hal_io); |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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|
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/* Need to wait until the command get aborted */ |
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timeout = 10; |
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while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) { |
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set_current_state(TASK_UNINTERRUPTIBLE); |
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schedule_timeout(timeout); |
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if (timeout < 4 * HZ) |
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timeout *= 2; |
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} |
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cmnd->scsi_done(cmnd); |
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bfa_trc(bfad, hal_io->iotag); |
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BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
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"scsi%d: complete abort 0x%p iotag 0x%x\n", |
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im_port->shost->host_no, cmnd, hal_io->iotag); |
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return SUCCESS; |
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out: |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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return rc; |
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} |
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static bfa_status_t |
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bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd, |
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struct bfad_itnim_s *itnim) |
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{ |
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struct bfa_tskim_s *tskim; |
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struct bfa_itnim_s *bfa_itnim; |
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bfa_status_t rc = BFA_STATUS_OK; |
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struct scsi_lun scsilun; |
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tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); |
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if (!tskim) { |
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BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
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"target reset, fail to allocate tskim\n"); |
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rc = BFA_STATUS_FAILED; |
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goto out; |
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} |
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|
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/* |
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* Set host_scribble to NULL to avoid aborting a task command if |
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* happens. |
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*/ |
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cmnd->host_scribble = NULL; |
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cmnd->SCp.Status = 0; |
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bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); |
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/* |
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* bfa_itnim can be NULL if the port gets disconnected and the bfa |
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* and fcs layers have cleaned up their nexus with the targets and |
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* the same has not been cleaned up by the shim |
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*/ |
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if (bfa_itnim == NULL) { |
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bfa_tskim_free(tskim); |
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BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
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"target reset, bfa_itnim is NULL\n"); |
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rc = BFA_STATUS_FAILED; |
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goto out; |
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} |
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memset(&scsilun, 0, sizeof(scsilun)); |
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bfa_tskim_start(tskim, bfa_itnim, scsilun, |
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FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO); |
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out: |
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return rc; |
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} |
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/* |
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* Scsi_Host template entry, resets a LUN and abort its all commands. |
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* |
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* Returns: SUCCESS or FAILED. |
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* |
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*/ |
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static int |
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bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd) |
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{ |
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struct Scsi_Host *shost = cmnd->device->host; |
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struct bfad_im_port_s *im_port = |
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(struct bfad_im_port_s *) shost->hostdata[0]; |
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struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; |
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struct bfad_s *bfad = im_port->bfad; |
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struct bfa_tskim_s *tskim; |
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struct bfad_itnim_s *itnim; |
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struct bfa_itnim_s *bfa_itnim; |
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DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); |
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int rc = SUCCESS; |
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unsigned long flags; |
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enum bfi_tskim_status task_status; |
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struct scsi_lun scsilun; |
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spin_lock_irqsave(&bfad->bfad_lock, flags); |
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itnim = itnim_data->itnim; |
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if (!itnim) { |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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rc = FAILED; |
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goto out; |
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} |
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tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); |
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if (!tskim) { |
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BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
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"LUN reset, fail to allocate tskim"); |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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rc = FAILED; |
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goto out; |
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} |
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/* |
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* Set host_scribble to NULL to avoid aborting a task command |
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* if happens. |
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*/ |
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cmnd->host_scribble = NULL; |
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cmnd->SCp.ptr = (char *)&wq; |
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cmnd->SCp.Status = 0; |
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bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); |
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/* |
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* bfa_itnim can be NULL if the port gets disconnected and the bfa |
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* and fcs layers have cleaned up their nexus with the targets and |
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* the same has not been cleaned up by the shim |
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*/ |
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if (bfa_itnim == NULL) { |
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bfa_tskim_free(tskim); |
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BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
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"lun reset, bfa_itnim is NULL\n"); |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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rc = FAILED; |
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goto out; |
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} |
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int_to_scsilun(cmnd->device->lun, &scsilun); |
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bfa_tskim_start(tskim, bfa_itnim, scsilun, |
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FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO); |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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wait_event(wq, test_bit(IO_DONE_BIT, |
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(unsigned long *)&cmnd->SCp.Status)); |
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task_status = cmnd->SCp.Status >> 1; |
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if (task_status != BFI_TSKIM_STS_OK) { |
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BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
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"LUN reset failure, status: %d\n", task_status); |
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rc = FAILED; |
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} |
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out: |
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return rc; |
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} |
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/* |
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* Scsi_Host template entry, resets the target and abort all commands. |
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*/ |
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static int |
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bfad_im_reset_target_handler(struct scsi_cmnd *cmnd) |
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{ |
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struct Scsi_Host *shost = cmnd->device->host; |
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struct scsi_target *starget = scsi_target(cmnd->device); |
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struct bfad_im_port_s *im_port = |
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(struct bfad_im_port_s *) shost->hostdata[0]; |
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struct bfad_s *bfad = im_port->bfad; |
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struct bfad_itnim_s *itnim; |
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unsigned long flags; |
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u32 rc, rtn = FAILED; |
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DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); |
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enum bfi_tskim_status task_status; |
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spin_lock_irqsave(&bfad->bfad_lock, flags); |
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itnim = bfad_get_itnim(im_port, starget->id); |
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if (itnim) { |
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cmnd->SCp.ptr = (char *)&wq; |
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rc = bfad_im_target_reset_send(bfad, cmnd, itnim); |
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if (rc == BFA_STATUS_OK) { |
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/* wait target reset to complete */ |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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wait_event(wq, test_bit(IO_DONE_BIT, |
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(unsigned long *)&cmnd->SCp.Status)); |
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spin_lock_irqsave(&bfad->bfad_lock, flags); |
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|
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task_status = cmnd->SCp.Status >> 1; |
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if (task_status != BFI_TSKIM_STS_OK) |
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BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
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"target reset failure," |
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" status: %d\n", task_status); |
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else |
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rtn = SUCCESS; |
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} |
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} |
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spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
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|
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return rtn; |
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} |
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|
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/* |
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* Scsi_Host template entry slave_destroy. |
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*/ |
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static void |
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bfad_im_slave_destroy(struct scsi_device *sdev) |
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{ |
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sdev->hostdata = NULL; |
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return; |
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} |
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|
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/* |
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* BFA FCS itnim callbacks |
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*/ |
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|
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/* |
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* BFA FCS itnim alloc callback, after successful PRLI |
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* Context: Interrupt |
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*/ |
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int |
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bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim, |
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struct bfad_itnim_s **itnim_drv) |
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{ |
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*itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC); |
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if (*itnim_drv == NULL) |
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return -ENOMEM; |
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|
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(*itnim_drv)->im = bfad->im; |
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*itnim = &(*itnim_drv)->fcs_itnim; |
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(*itnim_drv)->state = ITNIM_STATE_NONE; |
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|
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/* |
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* Initiaze the itnim_work |
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*/ |
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INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler); |
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bfad->bfad_flags |= BFAD_RPORT_ONLINE; |
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return 0; |
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} |
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|
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/* |
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* BFA FCS itnim free callback. |
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* Context: Interrupt. bfad_lock is held |
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*/ |
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void |
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bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv) |
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{ |
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struct bfad_port_s *port; |
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wwn_t wwpn; |
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u32 fcid; |
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char wwpn_str[32], fcid_str[16]; |
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struct bfad_im_s *im = itnim_drv->im; |
|
|
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/* online to free state transtion should not happen */ |
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WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE); |
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|
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itnim_drv->queue_work = 1; |
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/* offline request is not yet done, use the same request to free */ |
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if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING) |
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itnim_drv->queue_work = 0; |
|
|
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itnim_drv->state = ITNIM_STATE_FREE; |
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port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); |
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itnim_drv->im_port = port->im_port; |
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wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim); |
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fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim); |
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wwn2str(wwpn_str, wwpn); |
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fcid2str(fcid_str, fcid); |
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BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
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"ITNIM FREE scsi%d: FCID: %s WWPN: %s\n", |
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port->im_port->shost->host_no, |
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fcid_str, wwpn_str); |
|
|
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/* ITNIM processing */ |
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if (itnim_drv->queue_work) |
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queue_work(im->drv_workq, &itnim_drv->itnim_work); |
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} |
|
|
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/* |
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* BFA FCS itnim online callback. |
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* Context: Interrupt. bfad_lock is held |
|
*/ |
|
void |
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bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv) |
|
{ |
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struct bfad_port_s *port; |
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struct bfad_im_s *im = itnim_drv->im; |
|
|
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itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim); |
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port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); |
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itnim_drv->state = ITNIM_STATE_ONLINE; |
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itnim_drv->queue_work = 1; |
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itnim_drv->im_port = port->im_port; |
|
|
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/* ITNIM processing */ |
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if (itnim_drv->queue_work) |
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queue_work(im->drv_workq, &itnim_drv->itnim_work); |
|
} |
|
|
|
/* |
|
* BFA FCS itnim offline callback. |
|
* Context: Interrupt. bfad_lock is held |
|
*/ |
|
void |
|
bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv) |
|
{ |
|
struct bfad_port_s *port; |
|
struct bfad_s *bfad; |
|
struct bfad_im_s *im = itnim_drv->im; |
|
|
|
port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); |
|
bfad = port->bfad; |
|
if ((bfad->pport.flags & BFAD_PORT_DELETE) || |
|
(port->flags & BFAD_PORT_DELETE)) { |
|
itnim_drv->state = ITNIM_STATE_OFFLINE; |
|
return; |
|
} |
|
itnim_drv->im_port = port->im_port; |
|
itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING; |
|
itnim_drv->queue_work = 1; |
|
|
|
/* ITNIM processing */ |
|
if (itnim_drv->queue_work) |
|
queue_work(im->drv_workq, &itnim_drv->itnim_work); |
|
} |
|
|
|
/* |
|
* Allocate a Scsi_Host for a port. |
|
*/ |
|
int |
|
bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port, |
|
struct device *dev) |
|
{ |
|
struct bfad_im_port_pointer *im_portp; |
|
int error; |
|
|
|
mutex_lock(&bfad_mutex); |
|
error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL); |
|
if (error < 0) { |
|
mutex_unlock(&bfad_mutex); |
|
printk(KERN_WARNING "idr_alloc failure\n"); |
|
goto out; |
|
} |
|
im_port->idr_id = error; |
|
mutex_unlock(&bfad_mutex); |
|
|
|
im_port->shost = bfad_scsi_host_alloc(im_port, bfad); |
|
if (!im_port->shost) { |
|
error = 1; |
|
goto out_free_idr; |
|
} |
|
|
|
im_portp = shost_priv(im_port->shost); |
|
im_portp->p = im_port; |
|
im_port->shost->unique_id = im_port->idr_id; |
|
im_port->shost->this_id = -1; |
|
im_port->shost->max_id = MAX_FCP_TARGET; |
|
im_port->shost->max_lun = MAX_FCP_LUN; |
|
im_port->shost->max_cmd_len = 16; |
|
im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth; |
|
if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) |
|
im_port->shost->transportt = bfad_im_scsi_transport_template; |
|
else |
|
im_port->shost->transportt = |
|
bfad_im_scsi_vport_transport_template; |
|
|
|
error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev); |
|
if (error) { |
|
printk(KERN_WARNING "scsi_add_host failure %d\n", error); |
|
goto out_fc_rel; |
|
} |
|
|
|
return 0; |
|
|
|
out_fc_rel: |
|
scsi_host_put(im_port->shost); |
|
im_port->shost = NULL; |
|
out_free_idr: |
|
mutex_lock(&bfad_mutex); |
|
idr_remove(&bfad_im_port_index, im_port->idr_id); |
|
mutex_unlock(&bfad_mutex); |
|
out: |
|
return error; |
|
} |
|
|
|
void |
|
bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) |
|
{ |
|
bfa_trc(bfad, bfad->inst_no); |
|
BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n", |
|
im_port->shost->host_no); |
|
|
|
fc_remove_host(im_port->shost); |
|
|
|
scsi_remove_host(im_port->shost); |
|
scsi_host_put(im_port->shost); |
|
|
|
mutex_lock(&bfad_mutex); |
|
idr_remove(&bfad_im_port_index, im_port->idr_id); |
|
mutex_unlock(&bfad_mutex); |
|
} |
|
|
|
static void |
|
bfad_im_port_delete_handler(struct work_struct *work) |
|
{ |
|
struct bfad_im_port_s *im_port = |
|
container_of(work, struct bfad_im_port_s, port_delete_work); |
|
|
|
if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) { |
|
im_port->flags |= BFAD_PORT_DELETE; |
|
fc_vport_terminate(im_port->fc_vport); |
|
} |
|
} |
|
|
|
bfa_status_t |
|
bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port) |
|
{ |
|
int rc = BFA_STATUS_OK; |
|
struct bfad_im_port_s *im_port; |
|
|
|
im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC); |
|
if (im_port == NULL) { |
|
rc = BFA_STATUS_ENOMEM; |
|
goto ext; |
|
} |
|
port->im_port = im_port; |
|
im_port->port = port; |
|
im_port->bfad = bfad; |
|
|
|
INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler); |
|
INIT_LIST_HEAD(&im_port->itnim_mapped_list); |
|
INIT_LIST_HEAD(&im_port->binding_list); |
|
|
|
ext: |
|
return rc; |
|
} |
|
|
|
void |
|
bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port) |
|
{ |
|
struct bfad_im_port_s *im_port = port->im_port; |
|
|
|
queue_work(bfad->im->drv_workq, |
|
&im_port->port_delete_work); |
|
} |
|
|
|
void |
|
bfad_im_port_clean(struct bfad_im_port_s *im_port) |
|
{ |
|
struct bfad_fcp_binding *bp, *bp_new; |
|
unsigned long flags; |
|
struct bfad_s *bfad = im_port->bfad; |
|
|
|
spin_lock_irqsave(&bfad->bfad_lock, flags); |
|
list_for_each_entry_safe(bp, bp_new, &im_port->binding_list, |
|
list_entry) { |
|
list_del(&bp->list_entry); |
|
kfree(bp); |
|
} |
|
|
|
/* the itnim_mapped_list must be empty at this time */ |
|
WARN_ON(!list_empty(&im_port->itnim_mapped_list)); |
|
|
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
} |
|
|
|
static void bfad_aen_im_notify_handler(struct work_struct *work) |
|
{ |
|
struct bfad_im_s *im = |
|
container_of(work, struct bfad_im_s, aen_im_notify_work); |
|
struct bfa_aen_entry_s *aen_entry; |
|
struct bfad_s *bfad = im->bfad; |
|
struct Scsi_Host *shost = bfad->pport.im_port->shost; |
|
void *event_data; |
|
unsigned long flags; |
|
|
|
while (!list_empty(&bfad->active_aen_q)) { |
|
spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags); |
|
bfa_q_deq(&bfad->active_aen_q, &aen_entry); |
|
spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags); |
|
event_data = (char *)aen_entry + sizeof(struct list_head); |
|
fc_host_post_vendor_event(shost, fc_get_event_number(), |
|
sizeof(struct bfa_aen_entry_s) - |
|
sizeof(struct list_head), |
|
(char *)event_data, BFAD_NL_VENDOR_ID); |
|
spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags); |
|
list_add_tail(&aen_entry->qe, &bfad->free_aen_q); |
|
spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags); |
|
} |
|
} |
|
|
|
bfa_status_t |
|
bfad_im_probe(struct bfad_s *bfad) |
|
{ |
|
struct bfad_im_s *im; |
|
|
|
im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL); |
|
if (im == NULL) |
|
return BFA_STATUS_ENOMEM; |
|
|
|
bfad->im = im; |
|
im->bfad = bfad; |
|
|
|
if (bfad_thread_workq(bfad) != BFA_STATUS_OK) { |
|
kfree(im); |
|
return BFA_STATUS_FAILED; |
|
} |
|
|
|
INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler); |
|
return BFA_STATUS_OK; |
|
} |
|
|
|
void |
|
bfad_im_probe_undo(struct bfad_s *bfad) |
|
{ |
|
if (bfad->im) { |
|
bfad_destroy_workq(bfad->im); |
|
kfree(bfad->im); |
|
bfad->im = NULL; |
|
} |
|
} |
|
|
|
struct Scsi_Host * |
|
bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad) |
|
{ |
|
struct scsi_host_template *sht; |
|
|
|
if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) |
|
sht = &bfad_im_scsi_host_template; |
|
else |
|
sht = &bfad_im_vport_template; |
|
|
|
if (max_xfer_size != BFAD_MAX_SECTORS >> 1) |
|
sht->max_sectors = max_xfer_size << 1; |
|
|
|
sht->sg_tablesize = bfad->cfg_data.io_max_sge; |
|
|
|
return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer)); |
|
} |
|
|
|
void |
|
bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) |
|
{ |
|
if (!(im_port->flags & BFAD_PORT_DELETE)) |
|
flush_workqueue(bfad->im->drv_workq); |
|
bfad_im_scsi_host_free(im_port->bfad, im_port); |
|
bfad_im_port_clean(im_port); |
|
kfree(im_port); |
|
} |
|
|
|
void |
|
bfad_destroy_workq(struct bfad_im_s *im) |
|
{ |
|
if (im && im->drv_workq) { |
|
flush_workqueue(im->drv_workq); |
|
destroy_workqueue(im->drv_workq); |
|
im->drv_workq = NULL; |
|
} |
|
} |
|
|
|
bfa_status_t |
|
bfad_thread_workq(struct bfad_s *bfad) |
|
{ |
|
struct bfad_im_s *im = bfad->im; |
|
|
|
bfa_trc(bfad, 0); |
|
snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d", |
|
bfad->inst_no); |
|
im->drv_workq = create_singlethread_workqueue(im->drv_workq_name); |
|
if (!im->drv_workq) |
|
return BFA_STATUS_FAILED; |
|
|
|
return BFA_STATUS_OK; |
|
} |
|
|
|
/* |
|
* Scsi_Host template entry. |
|
* |
|
* Description: |
|
* OS entry point to adjust the queue_depths on a per-device basis. |
|
* Called once per device during the bus scan. |
|
* Return non-zero if fails. |
|
*/ |
|
static int |
|
bfad_im_slave_configure(struct scsi_device *sdev) |
|
{ |
|
scsi_change_queue_depth(sdev, bfa_lun_queue_depth); |
|
return 0; |
|
} |
|
|
|
struct scsi_host_template bfad_im_scsi_host_template = { |
|
.module = THIS_MODULE, |
|
.name = BFAD_DRIVER_NAME, |
|
.info = bfad_im_info, |
|
.queuecommand = bfad_im_queuecommand, |
|
.eh_timed_out = fc_eh_timed_out, |
|
.eh_abort_handler = bfad_im_abort_handler, |
|
.eh_device_reset_handler = bfad_im_reset_lun_handler, |
|
.eh_target_reset_handler = bfad_im_reset_target_handler, |
|
|
|
.slave_alloc = bfad_im_slave_alloc, |
|
.slave_configure = bfad_im_slave_configure, |
|
.slave_destroy = bfad_im_slave_destroy, |
|
|
|
.this_id = -1, |
|
.sg_tablesize = BFAD_IO_MAX_SGE, |
|
.cmd_per_lun = 3, |
|
.shost_attrs = bfad_im_host_attrs, |
|
.max_sectors = BFAD_MAX_SECTORS, |
|
.vendor_id = BFA_PCI_VENDOR_ID_BROCADE, |
|
}; |
|
|
|
struct scsi_host_template bfad_im_vport_template = { |
|
.module = THIS_MODULE, |
|
.name = BFAD_DRIVER_NAME, |
|
.info = bfad_im_info, |
|
.queuecommand = bfad_im_queuecommand, |
|
.eh_timed_out = fc_eh_timed_out, |
|
.eh_abort_handler = bfad_im_abort_handler, |
|
.eh_device_reset_handler = bfad_im_reset_lun_handler, |
|
.eh_target_reset_handler = bfad_im_reset_target_handler, |
|
|
|
.slave_alloc = bfad_im_slave_alloc, |
|
.slave_configure = bfad_im_slave_configure, |
|
.slave_destroy = bfad_im_slave_destroy, |
|
|
|
.this_id = -1, |
|
.sg_tablesize = BFAD_IO_MAX_SGE, |
|
.cmd_per_lun = 3, |
|
.shost_attrs = bfad_im_vport_attrs, |
|
.max_sectors = BFAD_MAX_SECTORS, |
|
}; |
|
|
|
bfa_status_t |
|
bfad_im_module_init(void) |
|
{ |
|
bfad_im_scsi_transport_template = |
|
fc_attach_transport(&bfad_im_fc_function_template); |
|
if (!bfad_im_scsi_transport_template) |
|
return BFA_STATUS_ENOMEM; |
|
|
|
bfad_im_scsi_vport_transport_template = |
|
fc_attach_transport(&bfad_im_vport_fc_function_template); |
|
if (!bfad_im_scsi_vport_transport_template) { |
|
fc_release_transport(bfad_im_scsi_transport_template); |
|
return BFA_STATUS_ENOMEM; |
|
} |
|
|
|
return BFA_STATUS_OK; |
|
} |
|
|
|
void |
|
bfad_im_module_exit(void) |
|
{ |
|
if (bfad_im_scsi_transport_template) |
|
fc_release_transport(bfad_im_scsi_transport_template); |
|
|
|
if (bfad_im_scsi_vport_transport_template) |
|
fc_release_transport(bfad_im_scsi_vport_transport_template); |
|
|
|
idr_destroy(&bfad_im_port_index); |
|
} |
|
|
|
void |
|
bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev) |
|
{ |
|
struct scsi_device *tmp_sdev; |
|
|
|
if (((jiffies - itnim->last_ramp_up_time) > |
|
BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) && |
|
((jiffies - itnim->last_queue_full_time) > |
|
BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) { |
|
shost_for_each_device(tmp_sdev, sdev->host) { |
|
if (bfa_lun_queue_depth > tmp_sdev->queue_depth) { |
|
if (tmp_sdev->id != sdev->id) |
|
continue; |
|
scsi_change_queue_depth(tmp_sdev, |
|
tmp_sdev->queue_depth + 1); |
|
|
|
itnim->last_ramp_up_time = jiffies; |
|
} |
|
} |
|
} |
|
} |
|
|
|
void |
|
bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev) |
|
{ |
|
struct scsi_device *tmp_sdev; |
|
|
|
itnim->last_queue_full_time = jiffies; |
|
|
|
shost_for_each_device(tmp_sdev, sdev->host) { |
|
if (tmp_sdev->id != sdev->id) |
|
continue; |
|
scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1); |
|
} |
|
} |
|
|
|
struct bfad_itnim_s * |
|
bfad_get_itnim(struct bfad_im_port_s *im_port, int id) |
|
{ |
|
struct bfad_itnim_s *itnim = NULL; |
|
|
|
/* Search the mapped list for this target ID */ |
|
list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) { |
|
if (id == itnim->scsi_tgt_id) |
|
return itnim; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/* |
|
* Function is invoked from the SCSI Host Template slave_alloc() entry point. |
|
* Has the logic to query the LUN Mask database to check if this LUN needs to |
|
* be made visible to the SCSI mid-layer or not. |
|
* |
|
* Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack. |
|
* Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack. |
|
*/ |
|
static int |
|
bfad_im_check_if_make_lun_visible(struct scsi_device *sdev, |
|
struct fc_rport *rport) |
|
{ |
|
struct bfad_itnim_data_s *itnim_data = |
|
(struct bfad_itnim_data_s *) rport->dd_data; |
|
struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa; |
|
struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport; |
|
struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa); |
|
int i = 0, ret = -ENXIO; |
|
|
|
for (i = 0; i < MAX_LUN_MASK_CFG; i++) { |
|
if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE && |
|
scsilun_to_int(&lun_list[i].lun) == sdev->lun && |
|
lun_list[i].rp_tag == bfa_rport->rport_tag && |
|
lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) { |
|
ret = BFA_STATUS_OK; |
|
break; |
|
} |
|
} |
|
return ret; |
|
} |
|
|
|
/* |
|
* Scsi_Host template entry slave_alloc |
|
*/ |
|
static int |
|
bfad_im_slave_alloc(struct scsi_device *sdev) |
|
{ |
|
struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
|
struct bfad_itnim_data_s *itnim_data; |
|
struct bfa_s *bfa; |
|
|
|
if (!rport || fc_remote_port_chkready(rport)) |
|
return -ENXIO; |
|
|
|
itnim_data = (struct bfad_itnim_data_s *) rport->dd_data; |
|
bfa = itnim_data->itnim->bfa_itnim->bfa; |
|
|
|
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) { |
|
/* |
|
* We should not mask LUN 0 - since this will translate |
|
* to no LUN / TARGET for SCSI ml resulting no scan. |
|
*/ |
|
if (sdev->lun == 0) { |
|
sdev->sdev_bflags |= BLIST_NOREPORTLUN | |
|
BLIST_SPARSELUN; |
|
goto done; |
|
} |
|
|
|
/* |
|
* Query LUN Mask configuration - to expose this LUN |
|
* to the SCSI mid-layer or to mask it. |
|
*/ |
|
if (bfad_im_check_if_make_lun_visible(sdev, rport) != |
|
BFA_STATUS_OK) |
|
return -ENXIO; |
|
} |
|
done: |
|
sdev->hostdata = rport->dd_data; |
|
|
|
return 0; |
|
} |
|
|
|
u32 |
|
bfad_im_supported_speeds(struct bfa_s *bfa) |
|
{ |
|
struct bfa_ioc_attr_s *ioc_attr; |
|
u32 supported_speed = 0; |
|
|
|
ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL); |
|
if (!ioc_attr) |
|
return 0; |
|
|
|
bfa_ioc_get_attr(&bfa->ioc, ioc_attr); |
|
if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS) |
|
supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT | |
|
FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT; |
|
else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) { |
|
if (ioc_attr->adapter_attr.is_mezz) { |
|
supported_speed |= FC_PORTSPEED_8GBIT | |
|
FC_PORTSPEED_4GBIT | |
|
FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT; |
|
} else { |
|
supported_speed |= FC_PORTSPEED_8GBIT | |
|
FC_PORTSPEED_4GBIT | |
|
FC_PORTSPEED_2GBIT; |
|
} |
|
} else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) { |
|
supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT | |
|
FC_PORTSPEED_1GBIT; |
|
} else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) { |
|
supported_speed |= FC_PORTSPEED_10GBIT; |
|
} |
|
kfree(ioc_attr); |
|
return supported_speed; |
|
} |
|
|
|
void |
|
bfad_fc_host_init(struct bfad_im_port_s *im_port) |
|
{ |
|
struct Scsi_Host *host = im_port->shost; |
|
struct bfad_s *bfad = im_port->bfad; |
|
struct bfad_port_s *port = im_port->port; |
|
char symname[BFA_SYMNAME_MAXLEN]; |
|
struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa); |
|
|
|
fc_host_node_name(host) = |
|
cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port))); |
|
fc_host_port_name(host) = |
|
cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port))); |
|
fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa); |
|
|
|
fc_host_supported_classes(host) = FC_COS_CLASS3; |
|
|
|
memset(fc_host_supported_fc4s(host), 0, |
|
sizeof(fc_host_supported_fc4s(host))); |
|
if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM) |
|
/* For FCP type 0x08 */ |
|
fc_host_supported_fc4s(host)[2] = 1; |
|
/* For fibre channel services type 0x20 */ |
|
fc_host_supported_fc4s(host)[7] = 1; |
|
|
|
strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname, |
|
BFA_SYMNAME_MAXLEN); |
|
sprintf(fc_host_symbolic_name(host), "%s", symname); |
|
|
|
fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa); |
|
fc_host_maxframe_size(host) = fcport->cfg.maxfrsize; |
|
} |
|
|
|
static void |
|
bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim) |
|
{ |
|
struct fc_rport_identifiers rport_ids; |
|
struct fc_rport *fc_rport; |
|
struct bfad_itnim_data_s *itnim_data; |
|
|
|
rport_ids.node_name = |
|
cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim)); |
|
rport_ids.port_name = |
|
cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); |
|
rport_ids.port_id = |
|
bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim)); |
|
rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; |
|
|
|
itnim->fc_rport = fc_rport = |
|
fc_remote_port_add(im_port->shost, 0, &rport_ids); |
|
|
|
if (!fc_rport) |
|
return; |
|
|
|
fc_rport->maxframe_size = |
|
bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim); |
|
fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim); |
|
|
|
itnim_data = fc_rport->dd_data; |
|
itnim_data->itnim = itnim; |
|
|
|
rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; |
|
|
|
if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) |
|
fc_remote_port_rolechg(fc_rport, rport_ids.roles); |
|
|
|
if ((fc_rport->scsi_target_id != -1) |
|
&& (fc_rport->scsi_target_id < MAX_FCP_TARGET)) |
|
itnim->scsi_tgt_id = fc_rport->scsi_target_id; |
|
|
|
itnim->channel = fc_rport->channel; |
|
|
|
return; |
|
} |
|
|
|
/* |
|
* Work queue handler using FC transport service |
|
* Context: kernel |
|
*/ |
|
static void |
|
bfad_im_itnim_work_handler(struct work_struct *work) |
|
{ |
|
struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s, |
|
itnim_work); |
|
struct bfad_im_s *im = itnim->im; |
|
struct bfad_s *bfad = im->bfad; |
|
struct bfad_im_port_s *im_port; |
|
unsigned long flags; |
|
struct fc_rport *fc_rport; |
|
wwn_t wwpn; |
|
u32 fcid; |
|
char wwpn_str[32], fcid_str[16]; |
|
|
|
spin_lock_irqsave(&bfad->bfad_lock, flags); |
|
im_port = itnim->im_port; |
|
bfa_trc(bfad, itnim->state); |
|
switch (itnim->state) { |
|
case ITNIM_STATE_ONLINE: |
|
if (!itnim->fc_rport) { |
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
bfad_im_fc_rport_add(im_port, itnim); |
|
spin_lock_irqsave(&bfad->bfad_lock, flags); |
|
wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); |
|
fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); |
|
wwn2str(wwpn_str, wwpn); |
|
fcid2str(fcid_str, fcid); |
|
list_add_tail(&itnim->list_entry, |
|
&im_port->itnim_mapped_list); |
|
BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
|
"ITNIM ONLINE Target: %d:0:%d " |
|
"FCID: %s WWPN: %s\n", |
|
im_port->shost->host_no, |
|
itnim->scsi_tgt_id, |
|
fcid_str, wwpn_str); |
|
} else { |
|
printk(KERN_WARNING |
|
"%s: itnim %llx is already in online state\n", |
|
__func__, |
|
bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); |
|
} |
|
|
|
break; |
|
case ITNIM_STATE_OFFLINE_PENDING: |
|
itnim->state = ITNIM_STATE_OFFLINE; |
|
if (itnim->fc_rport) { |
|
fc_rport = itnim->fc_rport; |
|
((struct bfad_itnim_data_s *) |
|
fc_rport->dd_data)->itnim = NULL; |
|
itnim->fc_rport = NULL; |
|
if (!(im_port->port->flags & BFAD_PORT_DELETE)) { |
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
fc_rport->dev_loss_tmo = |
|
bfa_fcpim_path_tov_get(&bfad->bfa) + 1; |
|
fc_remote_port_delete(fc_rport); |
|
spin_lock_irqsave(&bfad->bfad_lock, flags); |
|
} |
|
wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); |
|
fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); |
|
wwn2str(wwpn_str, wwpn); |
|
fcid2str(fcid_str, fcid); |
|
list_del(&itnim->list_entry); |
|
BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
|
"ITNIM OFFLINE Target: %d:0:%d " |
|
"FCID: %s WWPN: %s\n", |
|
im_port->shost->host_no, |
|
itnim->scsi_tgt_id, |
|
fcid_str, wwpn_str); |
|
} |
|
break; |
|
case ITNIM_STATE_FREE: |
|
if (itnim->fc_rport) { |
|
fc_rport = itnim->fc_rport; |
|
((struct bfad_itnim_data_s *) |
|
fc_rport->dd_data)->itnim = NULL; |
|
itnim->fc_rport = NULL; |
|
if (!(im_port->port->flags & BFAD_PORT_DELETE)) { |
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
fc_rport->dev_loss_tmo = |
|
bfa_fcpim_path_tov_get(&bfad->bfa) + 1; |
|
fc_remote_port_delete(fc_rport); |
|
spin_lock_irqsave(&bfad->bfad_lock, flags); |
|
} |
|
list_del(&itnim->list_entry); |
|
} |
|
|
|
kfree(itnim); |
|
break; |
|
default: |
|
WARN_ON(1); |
|
break; |
|
} |
|
|
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
} |
|
|
|
/* |
|
* Scsi_Host template entry, queue a SCSI command to the BFAD. |
|
*/ |
|
static int |
|
bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) |
|
{ |
|
struct bfad_im_port_s *im_port = |
|
(struct bfad_im_port_s *) cmnd->device->host->hostdata[0]; |
|
struct bfad_s *bfad = im_port->bfad; |
|
struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; |
|
struct bfad_itnim_s *itnim; |
|
struct bfa_ioim_s *hal_io; |
|
unsigned long flags; |
|
int rc; |
|
int sg_cnt = 0; |
|
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
|
|
|
rc = fc_remote_port_chkready(rport); |
|
if (rc) { |
|
cmnd->result = rc; |
|
done(cmnd); |
|
return 0; |
|
} |
|
|
|
if (bfad->bfad_flags & BFAD_EEH_BUSY) { |
|
if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE) |
|
cmnd->result = DID_NO_CONNECT << 16; |
|
else |
|
cmnd->result = DID_REQUEUE << 16; |
|
done(cmnd); |
|
return 0; |
|
} |
|
|
|
sg_cnt = scsi_dma_map(cmnd); |
|
if (sg_cnt < 0) |
|
return SCSI_MLQUEUE_HOST_BUSY; |
|
|
|
cmnd->scsi_done = done; |
|
|
|
spin_lock_irqsave(&bfad->bfad_lock, flags); |
|
if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) { |
|
printk(KERN_WARNING |
|
"bfad%d, queuecommand %p %x failed, BFA stopped\n", |
|
bfad->inst_no, cmnd, cmnd->cmnd[0]); |
|
cmnd->result = DID_NO_CONNECT << 16; |
|
goto out_fail_cmd; |
|
} |
|
|
|
|
|
itnim = itnim_data->itnim; |
|
if (!itnim) { |
|
cmnd->result = DID_IMM_RETRY << 16; |
|
goto out_fail_cmd; |
|
} |
|
|
|
hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd, |
|
itnim->bfa_itnim, sg_cnt); |
|
if (!hal_io) { |
|
printk(KERN_WARNING "hal_io failure\n"); |
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
scsi_dma_unmap(cmnd); |
|
return SCSI_MLQUEUE_HOST_BUSY; |
|
} |
|
|
|
cmnd->host_scribble = (char *)hal_io; |
|
bfa_ioim_start(hal_io); |
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
|
|
return 0; |
|
|
|
out_fail_cmd: |
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
|
scsi_dma_unmap(cmnd); |
|
if (done) |
|
done(cmnd); |
|
|
|
return 0; |
|
} |
|
|
|
static DEF_SCSI_QCMD(bfad_im_queuecommand) |
|
|
|
void |
|
bfad_rport_online_wait(struct bfad_s *bfad) |
|
{ |
|
int i; |
|
int rport_delay = 10; |
|
|
|
for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE) |
|
&& i < bfa_linkup_delay; i++) { |
|
set_current_state(TASK_UNINTERRUPTIBLE); |
|
schedule_timeout(HZ); |
|
} |
|
|
|
if (bfad->bfad_flags & BFAD_PORT_ONLINE) { |
|
rport_delay = rport_delay < bfa_linkup_delay ? |
|
rport_delay : bfa_linkup_delay; |
|
for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE) |
|
&& i < rport_delay; i++) { |
|
set_current_state(TASK_UNINTERRUPTIBLE); |
|
schedule_timeout(HZ); |
|
} |
|
|
|
if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) { |
|
set_current_state(TASK_UNINTERRUPTIBLE); |
|
schedule_timeout(rport_delay * HZ); |
|
} |
|
} |
|
} |
|
|
|
int |
|
bfad_get_linkup_delay(struct bfad_s *bfad) |
|
{ |
|
u8 nwwns = 0; |
|
wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX]; |
|
int linkup_delay; |
|
|
|
/* |
|
* Querying for the boot target port wwns |
|
* -- read from boot information in flash. |
|
* If nwwns > 0 => boot over SAN and set linkup_delay = 30 |
|
* else => local boot machine set linkup_delay = 0 |
|
*/ |
|
|
|
bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns); |
|
|
|
if (nwwns > 0) |
|
/* If Boot over SAN set linkup_delay = 30sec */ |
|
linkup_delay = 30; |
|
else |
|
/* If local boot; no linkup_delay */ |
|
linkup_delay = 0; |
|
|
|
return linkup_delay; |
|
}
|
|
|