1349 lines
35 KiB
C
1349 lines
35 KiB
C
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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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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#include <linux/export.h>
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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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BFA_TRC_FILE(LDRV, IM);
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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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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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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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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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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 = ScsiResult(host_status, scsi_status);
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break;
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case BFI_IOIM_STS_TIMEDOUT:
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host_status = DID_TIME_OUT;
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cmnd->result = ScsiResult(host_status, 0);
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break;
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case BFI_IOIM_STS_PATHTOV:
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host_status = DID_TRANSPORT_DISRUPTED;
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cmnd->result = ScsiResult(host_status, 0);
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break;
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default:
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host_status = DID_ERROR;
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cmnd->result = ScsiResult(host_status, 0);
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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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cmnd->host_scribble = NULL;
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bfa_trc(bfad, cmnd->result);
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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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cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_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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cmnd->host_scribble = NULL;
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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 = ScsiResult(DID_ERROR, 0);
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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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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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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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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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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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* 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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/* 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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|
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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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|
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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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|
/*
|
||
|
* bfa_itnim can be NULL if the port gets disconnected and the bfa
|
||
|
* 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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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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|
|
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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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/*
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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;
|
||
|
unsigned long flags;
|
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|
enum bfi_tskim_status task_status;
|
||
|
struct scsi_lun scsilun;
|
||
|
|
||
|
spin_lock_irqsave(&bfad->bfad_lock, flags);
|
||
|
itnim = itnim_data->itnim;
|
||
|
if (!itnim) {
|
||
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
|
||
|
rc = FAILED;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
|
||
|
if (!tskim) {
|
||
|
BFA_LOG(KERN_ERR, bfad, bfa_log_level,
|
||
|
"LUN reset, fail to allocate tskim");
|
||
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
|
||
|
rc = FAILED;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Set host_scribble to NULL to avoid aborting a task command
|
||
|
* if happens.
|
||
|
*/
|
||
|
cmnd->host_scribble = NULL;
|
||
|
cmnd->SCp.ptr = (char *)&wq;
|
||
|
cmnd->SCp.Status = 0;
|
||
|
bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
|
||
|
/*
|
||
|
* bfa_itnim can be NULL if the port gets disconnected and the bfa
|
||
|
* and fcs layers have cleaned up their nexus with the targets and
|
||
|
* the same has not been cleaned up by the shim
|
||
|
*/
|
||
|
if (bfa_itnim == NULL) {
|
||
|
bfa_tskim_free(tskim);
|
||
|
BFA_LOG(KERN_ERR, bfad, bfa_log_level,
|
||
|
"lun reset, bfa_itnim is NULL\n");
|
||
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
|
||
|
rc = FAILED;
|
||
|
goto out;
|
||
|
}
|
||
|
int_to_scsilun(cmnd->device->lun, &scsilun);
|
||
|
bfa_tskim_start(tskim, bfa_itnim, scsilun,
|
||
|
FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
|
||
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
|
||
|
|
||
|
wait_event(wq, test_bit(IO_DONE_BIT,
|
||
|
(unsigned long *)&cmnd->SCp.Status));
|
||
|
|
||
|
task_status = cmnd->SCp.Status >> 1;
|
||
|
if (task_status != BFI_TSKIM_STS_OK) {
|
||
|
BFA_LOG(KERN_ERR, bfad, bfa_log_level,
|
||
|
"LUN reset failure, status: %d\n", task_status);
|
||
|
rc = FAILED;
|
||
|
}
|
||
|
|
||
|
out:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Scsi_Host template entry, resets the bus and abort all commands.
|
||
|
*/
|
||
|
static int
|
||
|
bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
|
||
|
{
|
||
|
struct Scsi_Host *shost = cmnd->device->host;
|
||
|
struct bfad_im_port_s *im_port =
|
||
|
(struct bfad_im_port_s *) shost->hostdata[0];
|
||
|
struct bfad_s *bfad = im_port->bfad;
|
||
|
struct bfad_itnim_s *itnim;
|
||
|
unsigned long flags;
|
||
|
u32 i, rc, err_cnt = 0;
|
||
|
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
|
||
|
enum bfi_tskim_status task_status;
|
||
|
|
||
|
spin_lock_irqsave(&bfad->bfad_lock, flags);
|
||
|
for (i = 0; i < MAX_FCP_TARGET; i++) {
|
||
|
itnim = bfad_get_itnim(im_port, i);
|
||
|
if (itnim) {
|
||
|
cmnd->SCp.ptr = (char *)&wq;
|
||
|
rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
|
||
|
if (rc != BFA_STATUS_OK) {
|
||
|
err_cnt++;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
/* wait target reset to complete */
|
||
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
|
||
|
wait_event(wq, test_bit(IO_DONE_BIT,
|
||
|
(unsigned long *)&cmnd->SCp.Status));
|
||
|
spin_lock_irqsave(&bfad->bfad_lock, flags);
|
||
|
|
||
|
task_status = cmnd->SCp.Status >> 1;
|
||
|
if (task_status != BFI_TSKIM_STS_OK) {
|
||
|
BFA_LOG(KERN_ERR, bfad, bfa_log_level,
|
||
|
"target reset failure,"
|
||
|
" status: %d\n", task_status);
|
||
|
err_cnt++;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
|
||
|
|
||
|
if (err_cnt)
|
||
|
return FAILED;
|
||
|
|
||
|
return SUCCESS;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Scsi_Host template entry slave_destroy.
|
||
|
*/
|
||
|
static void
|
||
|
bfad_im_slave_destroy(struct scsi_device *sdev)
|
||
|
{
|
||
|
sdev->hostdata = NULL;
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* BFA FCS itnim callbacks
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
* BFA FCS itnim alloc callback, after successful PRLI
|
||
|
* Context: Interrupt
|
||
|
*/
|
||
|
int
|
||
|
bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
|
||
|
struct bfad_itnim_s **itnim_drv)
|
||
|
{
|
||
|
*itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
|
||
|
if (*itnim_drv == NULL)
|
||
|
return -ENOMEM;
|
||
|
|
||
|
(*itnim_drv)->im = bfad->im;
|
||
|
*itnim = &(*itnim_drv)->fcs_itnim;
|
||
|
(*itnim_drv)->state = ITNIM_STATE_NONE;
|
||
|
|
||
|
/*
|
||
|
* Initiaze the itnim_work
|
||
|
*/
|
||
|
INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
|
||
|
bfad->bfad_flags |= BFAD_RPORT_ONLINE;
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* BFA FCS itnim free callback.
|
||
|
* Context: Interrupt. bfad_lock is held
|
||
|
*/
|
||
|
void
|
||
|
bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
|
||
|
{
|
||
|
struct bfad_port_s *port;
|
||
|
wwn_t wwpn;
|
||
|
u32 fcid;
|
||
|
char wwpn_str[32], fcid_str[16];
|
||
|
struct bfad_im_s *im = itnim_drv->im;
|
||
|
|
||
|
/* online to free state transtion should not happen */
|
||
|
WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
|
||
|
|
||
|
itnim_drv->queue_work = 1;
|
||
|
/* offline request is not yet done, use the same request to free */
|
||
|
if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
|
||
|
itnim_drv->queue_work = 0;
|
||
|
|
||
|
itnim_drv->state = ITNIM_STATE_FREE;
|
||
|
port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
|
||
|
itnim_drv->im_port = port->im_port;
|
||
|
wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
|
||
|
fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
|
||
|
wwn2str(wwpn_str, wwpn);
|
||
|
fcid2str(fcid_str, fcid);
|
||
|
BFA_LOG(KERN_INFO, bfad, bfa_log_level,
|
||
|
"ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
|
||
|
port->im_port->shost->host_no,
|
||
|
fcid_str, wwpn_str);
|
||
|
|
||
|
/* ITNIM processing */
|
||
|
if (itnim_drv->queue_work)
|
||
|
queue_work(im->drv_workq, &itnim_drv->itnim_work);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* BFA FCS itnim online callback.
|
||
|
* Context: Interrupt. bfad_lock is held
|
||
|
*/
|
||
|
void
|
||
|
bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
|
||
|
{
|
||
|
struct bfad_port_s *port;
|
||
|
struct bfad_im_s *im = itnim_drv->im;
|
||
|
|
||
|
itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
|
||
|
port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
|
||
|
itnim_drv->state = ITNIM_STATE_ONLINE;
|
||
|
itnim_drv->queue_work = 1;
|
||
|
itnim_drv->im_port = port->im_port;
|
||
|
|
||
|
/* ITNIM processing */
|
||
|
if (itnim_drv->queue_work)
|
||
|
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)
|
||
|
{
|
||
|
int error = 1;
|
||
|
|
||
|
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_port->shost->hostdata[0] = (unsigned long)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(unsigned long));
|
||
|
}
|
||
|
|
||
|
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_abort_handler = bfad_im_abort_handler,
|
||
|
.eh_device_reset_handler = bfad_im_reset_lun_handler,
|
||
|
.eh_bus_reset_handler = bfad_im_reset_bus_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,
|
||
|
.use_clustering = ENABLE_CLUSTERING,
|
||
|
.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_abort_handler = bfad_im_abort_handler,
|
||
|
.eh_device_reset_handler = bfad_im_reset_lun_handler,
|
||
|
.eh_bus_reset_handler = bfad_im_reset_bus_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,
|
||
|
.use_clustering = ENABLE_CLUSTERING,
|
||
|
.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 = ScsiResult(DID_NO_CONNECT, 0);
|
||
|
goto out_fail_cmd;
|
||
|
}
|
||
|
|
||
|
|
||
|
itnim = itnim_data->itnim;
|
||
|
if (!itnim) {
|
||
|
cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
|
||
|
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;
|
||
|
}
|