ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/scsi/lpfc/lpfc_scsi.c b/marvell/linux/drivers/scsi/lpfc/lpfc_scsi.c
new file mode 100644
index 0000000..f238e0f
--- /dev/null
+++ b/marvell/linux/drivers/scsi/lpfc/lpfc_scsi.c
@@ -0,0 +1,6092 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for *
+ * Fibre Channel Host Bus Adapters. *
+ * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
+ * Copyright (C) 2004-2016 Emulex. All rights reserved. *
+ * EMULEX and SLI are trademarks of Emulex. *
+ * www.broadcom.com *
+ * Portions Copyright (C) 2004-2005 Christoph Hellwig *
+ * *
+ * This program is free software; you can redistribute it and/or *
+ * modify it under the terms of version 2 of the GNU General *
+ * Public License as published by the Free Software Foundation. *
+ * This program is distributed in the hope that it will be useful. *
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
+ * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
+ * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+ * TO BE LEGALLY INVALID. See the GNU General Public License for *
+ * more details, a copy of which can be found in the file COPYING *
+ * included with this package. *
+ *******************************************************************/
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/export.h>
+#include <linux/delay.h>
+#include <asm/unaligned.h>
+#include <linux/t10-pi.h>
+#include <linux/crc-t10dif.h>
+#include <net/checksum.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_transport_fc.h>
+
+#include "lpfc_version.h"
+#include "lpfc_hw4.h"
+#include "lpfc_hw.h"
+#include "lpfc_sli.h"
+#include "lpfc_sli4.h"
+#include "lpfc_nl.h"
+#include "lpfc_disc.h"
+#include "lpfc.h"
+#include "lpfc_scsi.h"
+#include "lpfc_logmsg.h"
+#include "lpfc_crtn.h"
+#include "lpfc_vport.h"
+
+#define LPFC_RESET_WAIT 2
+#define LPFC_ABORT_WAIT 2
+
+static char *dif_op_str[] = {
+ "PROT_NORMAL",
+ "PROT_READ_INSERT",
+ "PROT_WRITE_STRIP",
+ "PROT_READ_STRIP",
+ "PROT_WRITE_INSERT",
+ "PROT_READ_PASS",
+ "PROT_WRITE_PASS",
+};
+
+struct scsi_dif_tuple {
+ __be16 guard_tag; /* Checksum */
+ __be16 app_tag; /* Opaque storage */
+ __be32 ref_tag; /* Target LBA or indirect LBA */
+};
+
+static struct lpfc_rport_data *
+lpfc_rport_data_from_scsi_device(struct scsi_device *sdev)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata;
+
+ if (vport->phba->cfg_fof)
+ return ((struct lpfc_device_data *)sdev->hostdata)->rport_data;
+ else
+ return (struct lpfc_rport_data *)sdev->hostdata;
+}
+
+static void
+lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
+static void
+lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
+static int
+lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
+
+static inline unsigned
+lpfc_cmd_blksize(struct scsi_cmnd *sc)
+{
+ return sc->device->sector_size;
+}
+
+#define LPFC_CHECK_PROTECT_GUARD 1
+#define LPFC_CHECK_PROTECT_REF 2
+static inline unsigned
+lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
+{
+ return 1;
+}
+
+static inline unsigned
+lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
+{
+ if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
+ return 0;
+ if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
+ return 1;
+ return 0;
+}
+
+/**
+ * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
+ * @phba: Pointer to HBA object.
+ * @lpfc_cmd: lpfc scsi command object pointer.
+ *
+ * This function is called from the lpfc_prep_task_mgmt_cmd function to
+ * set the last bit in the response sge entry.
+ **/
+static void
+lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
+ struct lpfc_io_buf *lpfc_cmd)
+{
+ struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
+ if (sgl) {
+ sgl += 1;
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ }
+}
+
+/**
+ * lpfc_update_stats - Update statistical data for the command completion
+ * @phba: Pointer to HBA object.
+ * @lpfc_cmd: lpfc scsi command object pointer.
+ *
+ * This function is called when there is a command completion and this
+ * function updates the statistical data for the command completion.
+ **/
+static void
+lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ struct lpfc_rport_data *rdata;
+ struct lpfc_nodelist *pnode;
+ struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
+ unsigned long flags;
+ struct Scsi_Host *shost = cmd->device->host;
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ unsigned long latency;
+ int i;
+
+ if (!vport->stat_data_enabled ||
+ vport->stat_data_blocked ||
+ (cmd->result))
+ return;
+
+ latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
+ rdata = lpfc_cmd->rdata;
+ pnode = rdata->pnode;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ if (!pnode ||
+ !pnode->lat_data ||
+ (phba->bucket_type == LPFC_NO_BUCKET)) {
+ spin_unlock_irqrestore(shost->host_lock, flags);
+ return;
+ }
+
+ if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
+ i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
+ phba->bucket_step;
+ /* check array subscript bounds */
+ if (i < 0)
+ i = 0;
+ else if (i >= LPFC_MAX_BUCKET_COUNT)
+ i = LPFC_MAX_BUCKET_COUNT - 1;
+ } else {
+ for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
+ if (latency <= (phba->bucket_base +
+ ((1<<i)*phba->bucket_step)))
+ break;
+ }
+
+ pnode->lat_data[i].cmd_count++;
+ spin_unlock_irqrestore(shost->host_lock, flags);
+}
+
+/**
+ * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
+ * @phba: The Hba for which this call is being executed.
+ *
+ * This routine is called when there is resource error in driver or firmware.
+ * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
+ * posts at most 1 event each second. This routine wakes up worker thread of
+ * @phba to process WORKER_RAM_DOWN_EVENT event.
+ *
+ * This routine should be called with no lock held.
+ **/
+void
+lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
+{
+ unsigned long flags;
+ uint32_t evt_posted;
+ unsigned long expires;
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ atomic_inc(&phba->num_rsrc_err);
+ phba->last_rsrc_error_time = jiffies;
+
+ expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL;
+ if (time_after(expires, jiffies)) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ return;
+ }
+
+ phba->last_ramp_down_time = jiffies;
+
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+
+ spin_lock_irqsave(&phba->pport->work_port_lock, flags);
+ evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
+ if (!evt_posted)
+ phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
+ spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
+
+ if (!evt_posted)
+ lpfc_worker_wake_up(phba);
+ return;
+}
+
+/**
+ * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
+ * @phba: The Hba for which this call is being executed.
+ *
+ * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
+ * thread.This routine reduces queue depth for all scsi device on each vport
+ * associated with @phba.
+ **/
+void
+lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
+{
+ struct lpfc_vport **vports;
+ struct Scsi_Host *shost;
+ struct scsi_device *sdev;
+ unsigned long new_queue_depth;
+ unsigned long num_rsrc_err;
+ int i;
+
+ num_rsrc_err = atomic_read(&phba->num_rsrc_err);
+
+ /*
+ * The error and success command counters are global per
+ * driver instance. If another handler has already
+ * operated on this error event, just exit.
+ */
+ if (num_rsrc_err == 0)
+ return;
+
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports != NULL)
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
+ shost = lpfc_shost_from_vport(vports[i]);
+ shost_for_each_device(sdev, shost) {
+ if (num_rsrc_err >= sdev->queue_depth)
+ new_queue_depth = 1;
+ else
+ new_queue_depth = sdev->queue_depth -
+ num_rsrc_err;
+ scsi_change_queue_depth(sdev, new_queue_depth);
+ }
+ }
+ lpfc_destroy_vport_work_array(phba, vports);
+ atomic_set(&phba->num_rsrc_err, 0);
+}
+
+/**
+ * lpfc_scsi_dev_block - set all scsi hosts to block state
+ * @phba: Pointer to HBA context object.
+ *
+ * This function walks vport list and set each SCSI host to block state
+ * by invoking fc_remote_port_delete() routine. This function is invoked
+ * with EEH when device's PCI slot has been permanently disabled.
+ **/
+void
+lpfc_scsi_dev_block(struct lpfc_hba *phba)
+{
+ struct lpfc_vport **vports;
+ struct Scsi_Host *shost;
+ struct scsi_device *sdev;
+ struct fc_rport *rport;
+ int i;
+
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports != NULL)
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
+ shost = lpfc_shost_from_vport(vports[i]);
+ shost_for_each_device(sdev, shost) {
+ rport = starget_to_rport(scsi_target(sdev));
+ fc_remote_port_delete(rport);
+ }
+ }
+ lpfc_destroy_vport_work_array(phba, vports);
+}
+
+/**
+ * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
+ * @vport: The virtual port for which this call being executed.
+ * @num_to_allocate: The requested number of buffers to allocate.
+ *
+ * This routine allocates a scsi buffer for device with SLI-3 interface spec,
+ * the scsi buffer contains all the necessary information needed to initiate
+ * a SCSI I/O. The non-DMAable buffer region contains information to build
+ * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
+ * and the initial BPL. In addition to allocating memory, the FCP CMND and
+ * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
+ *
+ * Return codes:
+ * int - number of scsi buffers that were allocated.
+ * 0 = failure, less than num_to_alloc is a partial failure.
+ **/
+static int
+lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_io_buf *psb;
+ struct ulp_bde64 *bpl;
+ IOCB_t *iocb;
+ dma_addr_t pdma_phys_fcp_cmd;
+ dma_addr_t pdma_phys_fcp_rsp;
+ dma_addr_t pdma_phys_sgl;
+ uint16_t iotag;
+ int bcnt, bpl_size;
+
+ bpl_size = phba->cfg_sg_dma_buf_size -
+ (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
+ num_to_alloc, phba->cfg_sg_dma_buf_size,
+ (int)sizeof(struct fcp_cmnd),
+ (int)sizeof(struct fcp_rsp), bpl_size);
+
+ for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
+ psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL);
+ if (!psb)
+ break;
+
+ /*
+ * Get memory from the pci pool to map the virt space to pci
+ * bus space for an I/O. The DMA buffer includes space for the
+ * struct fcp_cmnd, struct fcp_rsp and the number of bde's
+ * necessary to support the sg_tablesize.
+ */
+ psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
+ GFP_KERNEL, &psb->dma_handle);
+ if (!psb->data) {
+ kfree(psb);
+ break;
+ }
+
+
+ /* Allocate iotag for psb->cur_iocbq. */
+ iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
+ if (iotag == 0) {
+ dma_pool_free(phba->lpfc_sg_dma_buf_pool,
+ psb->data, psb->dma_handle);
+ kfree(psb);
+ break;
+ }
+ psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
+
+ psb->fcp_cmnd = psb->data;
+ psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
+ psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) +
+ sizeof(struct fcp_rsp);
+
+ /* Initialize local short-hand pointers. */
+ bpl = (struct ulp_bde64 *)psb->dma_sgl;
+ pdma_phys_fcp_cmd = psb->dma_handle;
+ pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
+ pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) +
+ sizeof(struct fcp_rsp);
+
+ /*
+ * The first two bdes are the FCP_CMD and FCP_RSP. The balance
+ * are sg list bdes. Initialize the first two and leave the
+ * rest for queuecommand.
+ */
+ bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
+ bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
+ bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
+ bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
+
+ /* Setup the physical region for the FCP RSP */
+ bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
+ bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
+ bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
+ bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
+
+ /*
+ * Since the IOCB for the FCP I/O is built into this
+ * lpfc_scsi_buf, initialize it with all known data now.
+ */
+ iocb = &psb->cur_iocbq.iocb;
+ iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
+ if ((phba->sli_rev == 3) &&
+ !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
+ /* fill in immediate fcp command BDE */
+ iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
+ iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
+ iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
+ unsli3.fcp_ext.icd);
+ iocb->un.fcpi64.bdl.addrHigh = 0;
+ iocb->ulpBdeCount = 0;
+ iocb->ulpLe = 0;
+ /* fill in response BDE */
+ iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
+ BUFF_TYPE_BDE_64;
+ iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
+ sizeof(struct fcp_rsp);
+ iocb->unsli3.fcp_ext.rbde.addrLow =
+ putPaddrLow(pdma_phys_fcp_rsp);
+ iocb->unsli3.fcp_ext.rbde.addrHigh =
+ putPaddrHigh(pdma_phys_fcp_rsp);
+ } else {
+ iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ iocb->un.fcpi64.bdl.bdeSize =
+ (2 * sizeof(struct ulp_bde64));
+ iocb->un.fcpi64.bdl.addrLow =
+ putPaddrLow(pdma_phys_sgl);
+ iocb->un.fcpi64.bdl.addrHigh =
+ putPaddrHigh(pdma_phys_sgl);
+ iocb->ulpBdeCount = 1;
+ iocb->ulpLe = 1;
+ }
+ iocb->ulpClass = CLASS3;
+ psb->status = IOSTAT_SUCCESS;
+ /* Put it back into the SCSI buffer list */
+ psb->cur_iocbq.context1 = psb;
+ spin_lock_init(&psb->buf_lock);
+ lpfc_release_scsi_buf_s3(phba, psb);
+
+ }
+
+ return bcnt;
+}
+
+/**
+ * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
+ * @vport: pointer to lpfc vport data structure.
+ *
+ * This routine is invoked by the vport cleanup for deletions and the cleanup
+ * for an ndlp on removal.
+ **/
+void
+lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_io_buf *psb, *next_psb;
+ struct lpfc_sli4_hdw_queue *qp;
+ unsigned long iflag = 0;
+ int idx;
+
+ if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
+ return;
+
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
+ qp = &phba->sli4_hba.hdwq[idx];
+
+ spin_lock(&qp->abts_io_buf_list_lock);
+ list_for_each_entry_safe(psb, next_psb,
+ &qp->lpfc_abts_io_buf_list, list) {
+ if (psb->cur_iocbq.iocb_flag == LPFC_IO_NVME)
+ continue;
+
+ if (psb->rdata && psb->rdata->pnode &&
+ psb->rdata->pnode->vport == vport)
+ psb->rdata = NULL;
+ }
+ spin_unlock(&qp->abts_io_buf_list_lock);
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+}
+
+/**
+ * lpfc_sli4_io_xri_aborted - Fast-path process of fcp xri abort
+ * @phba: pointer to lpfc hba data structure.
+ * @axri: pointer to the fcp xri abort wcqe structure.
+ *
+ * This routine is invoked by the worker thread to process a SLI4 fast-path
+ * FCP or NVME aborted xri.
+ **/
+void
+lpfc_sli4_io_xri_aborted(struct lpfc_hba *phba,
+ struct sli4_wcqe_xri_aborted *axri, int idx)
+{
+ uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
+ uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
+ struct lpfc_io_buf *psb, *next_psb;
+ struct lpfc_sli4_hdw_queue *qp;
+ unsigned long iflag = 0;
+ struct lpfc_iocbq *iocbq;
+ int i;
+ struct lpfc_nodelist *ndlp;
+ int rrq_empty = 0;
+ struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring;
+
+ if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
+ return;
+
+ qp = &phba->sli4_hba.hdwq[idx];
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ spin_lock(&qp->abts_io_buf_list_lock);
+ list_for_each_entry_safe(psb, next_psb,
+ &qp->lpfc_abts_io_buf_list, list) {
+ if (psb->cur_iocbq.sli4_xritag == xri) {
+ list_del_init(&psb->list);
+ psb->flags &= ~LPFC_SBUF_XBUSY;
+ psb->status = IOSTAT_SUCCESS;
+ if (psb->cur_iocbq.iocb_flag == LPFC_IO_NVME) {
+ qp->abts_nvme_io_bufs--;
+ spin_unlock(&qp->abts_io_buf_list_lock);
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ lpfc_sli4_nvme_xri_aborted(phba, axri, psb);
+ return;
+ }
+ qp->abts_scsi_io_bufs--;
+ spin_unlock(&qp->abts_io_buf_list_lock);
+
+ if (psb->rdata && psb->rdata->pnode)
+ ndlp = psb->rdata->pnode;
+ else
+ ndlp = NULL;
+
+ rrq_empty = list_empty(&phba->active_rrq_list);
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ if (ndlp) {
+ lpfc_set_rrq_active(phba, ndlp,
+ psb->cur_iocbq.sli4_lxritag, rxid, 1);
+ lpfc_sli4_abts_err_handler(phba, ndlp, axri);
+ }
+ lpfc_release_scsi_buf_s4(phba, psb);
+ if (rrq_empty)
+ lpfc_worker_wake_up(phba);
+ return;
+ }
+ }
+ spin_unlock(&qp->abts_io_buf_list_lock);
+ for (i = 1; i <= phba->sli.last_iotag; i++) {
+ iocbq = phba->sli.iocbq_lookup[i];
+
+ if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
+ (iocbq->iocb_flag & LPFC_IO_LIBDFC))
+ continue;
+ if (iocbq->sli4_xritag != xri)
+ continue;
+ psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
+ psb->flags &= ~LPFC_SBUF_XBUSY;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ if (!list_empty(&pring->txq))
+ lpfc_worker_wake_up(phba);
+ return;
+
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+}
+
+/**
+ * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
+ * @phba: The HBA for which this call is being executed.
+ *
+ * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
+ * and returns to caller.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_scsi_buf - Success
+ **/
+static struct lpfc_io_buf *
+lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ struct scsi_cmnd *cmnd)
+{
+ struct lpfc_io_buf *lpfc_cmd = NULL;
+ struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
+ unsigned long iflag = 0;
+
+ spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
+ list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_io_buf,
+ list);
+ if (!lpfc_cmd) {
+ spin_lock(&phba->scsi_buf_list_put_lock);
+ list_splice(&phba->lpfc_scsi_buf_list_put,
+ &phba->lpfc_scsi_buf_list_get);
+ INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
+ list_remove_head(scsi_buf_list_get, lpfc_cmd,
+ struct lpfc_io_buf, list);
+ spin_unlock(&phba->scsi_buf_list_put_lock);
+ }
+ spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
+
+ if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) {
+ atomic_inc(&ndlp->cmd_pending);
+ lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
+ }
+ return lpfc_cmd;
+}
+/**
+ * lpfc_get_scsi_buf_s4 - Get a scsi buffer from io_buf_list of the HBA
+ * @phba: The HBA for which this call is being executed.
+ *
+ * This routine removes a scsi buffer from head of @hdwq io_buf_list
+ * and returns to caller.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_scsi_buf - Success
+ **/
+static struct lpfc_io_buf *
+lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ struct scsi_cmnd *cmnd)
+{
+ struct lpfc_io_buf *lpfc_cmd;
+ struct lpfc_sli4_hdw_queue *qp;
+ struct sli4_sge *sgl;
+ IOCB_t *iocb;
+ dma_addr_t pdma_phys_fcp_rsp;
+ dma_addr_t pdma_phys_fcp_cmd;
+ uint32_t cpu, idx;
+ int tag;
+ struct fcp_cmd_rsp_buf *tmp = NULL;
+
+ cpu = raw_smp_processor_id();
+ if (cmnd && phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) {
+ tag = blk_mq_unique_tag(cmnd->request);
+ idx = blk_mq_unique_tag_to_hwq(tag);
+ } else {
+ idx = phba->sli4_hba.cpu_map[cpu].hdwq;
+ }
+
+ lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx,
+ !phba->cfg_xri_rebalancing);
+ if (!lpfc_cmd) {
+ qp = &phba->sli4_hba.hdwq[idx];
+ qp->empty_io_bufs++;
+ return NULL;
+ }
+
+ /* Setup key fields in buffer that may have been changed
+ * if other protocols used this buffer.
+ */
+ lpfc_cmd->cur_iocbq.iocb_flag = LPFC_IO_FCP;
+ lpfc_cmd->prot_seg_cnt = 0;
+ lpfc_cmd->seg_cnt = 0;
+ lpfc_cmd->timeout = 0;
+ lpfc_cmd->flags = 0;
+ lpfc_cmd->start_time = jiffies;
+ lpfc_cmd->waitq = NULL;
+ lpfc_cmd->cpu = cpu;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ lpfc_cmd->prot_data_type = 0;
+#endif
+ tmp = lpfc_get_cmd_rsp_buf_per_hdwq(phba, lpfc_cmd);
+ if (!tmp) {
+ lpfc_release_io_buf(phba, lpfc_cmd, lpfc_cmd->hdwq);
+ return NULL;
+ }
+
+ lpfc_cmd->fcp_cmnd = tmp->fcp_cmnd;
+ lpfc_cmd->fcp_rsp = tmp->fcp_rsp;
+
+ /*
+ * The first two SGEs are the FCP_CMD and FCP_RSP.
+ * The balance are sg list bdes. Initialize the
+ * first two and leave the rest for queuecommand.
+ */
+ sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
+ pdma_phys_fcp_cmd = tmp->fcp_cmd_rsp_dma_handle;
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
+ sgl++;
+
+ /* Setup the physical region for the FCP RSP */
+ pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
+
+ /*
+ * Since the IOCB for the FCP I/O is built into this
+ * lpfc_io_buf, initialize it with all known data now.
+ */
+ iocb = &lpfc_cmd->cur_iocbq.iocb;
+ iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
+ iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
+ /* setting the BLP size to 2 * sizeof BDE may not be correct.
+ * We are setting the bpl to point to out sgl. An sgl's
+ * entries are 16 bytes, a bpl entries are 12 bytes.
+ */
+ iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
+ iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
+ iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
+ iocb->ulpBdeCount = 1;
+ iocb->ulpLe = 1;
+ iocb->ulpClass = CLASS3;
+
+ if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) {
+ atomic_inc(&ndlp->cmd_pending);
+ lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
+ }
+ return lpfc_cmd;
+}
+/**
+ * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
+ * @phba: The HBA for which this call is being executed.
+ *
+ * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
+ * and returns to caller.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_scsi_buf - Success
+ **/
+static struct lpfc_io_buf*
+lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ struct scsi_cmnd *cmnd)
+{
+ return phba->lpfc_get_scsi_buf(phba, ndlp, cmnd);
+}
+
+/**
+ * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
+ * @phba: The Hba for which this call is being executed.
+ * @psb: The scsi buffer which is being released.
+ *
+ * This routine releases @psb scsi buffer by adding it to tail of @phba
+ * lpfc_scsi_buf_list list.
+ **/
+static void
+lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
+{
+ unsigned long iflag = 0;
+
+ psb->seg_cnt = 0;
+ psb->prot_seg_cnt = 0;
+
+ spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
+ psb->pCmd = NULL;
+ psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
+ list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
+ spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
+}
+
+/**
+ * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
+ * @phba: The Hba for which this call is being executed.
+ * @psb: The scsi buffer which is being released.
+ *
+ * This routine releases @psb scsi buffer by adding it to tail of @hdwq
+ * io_buf_list list. For SLI4 XRI's are tied to the scsi buffer
+ * and cannot be reused for at least RA_TOV amount of time if it was
+ * aborted.
+ **/
+static void
+lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
+{
+ struct lpfc_sli4_hdw_queue *qp;
+ unsigned long iflag = 0;
+
+ psb->seg_cnt = 0;
+ psb->prot_seg_cnt = 0;
+
+ qp = psb->hdwq;
+ if (psb->flags & LPFC_SBUF_XBUSY) {
+ spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag);
+ psb->pCmd = NULL;
+ list_add_tail(&psb->list, &qp->lpfc_abts_io_buf_list);
+ qp->abts_scsi_io_bufs++;
+ spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag);
+ } else {
+ lpfc_release_io_buf(phba, (struct lpfc_io_buf *)psb, qp);
+ }
+}
+
+/**
+ * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
+ * @phba: The Hba for which this call is being executed.
+ * @psb: The scsi buffer which is being released.
+ *
+ * This routine releases @psb scsi buffer by adding it to tail of @phba
+ * lpfc_scsi_buf_list list.
+ **/
+static void
+lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
+{
+ if ((psb->flags & LPFC_SBUF_BUMP_QDEPTH) && psb->ndlp)
+ atomic_dec(&psb->ndlp->cmd_pending);
+
+ psb->flags &= ~LPFC_SBUF_BUMP_QDEPTH;
+ phba->lpfc_release_scsi_buf(phba, psb);
+}
+
+/**
+ * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be mapped.
+ *
+ * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
+ * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
+ * through sg elements and format the bde. This routine also initializes all
+ * IOCB fields which are dependent on scsi command request buffer.
+ *
+ * Return codes:
+ * 1 - Error
+ * 0 - Success
+ **/
+static int
+lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
+ struct scatterlist *sgel = NULL;
+ struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl;
+ struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
+ IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
+ struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
+ dma_addr_t physaddr;
+ uint32_t num_bde = 0;
+ int nseg, datadir = scsi_cmnd->sc_data_direction;
+
+ /*
+ * There are three possibilities here - use scatter-gather segment, use
+ * the single mapping, or neither. Start the lpfc command prep by
+ * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
+ * data bde entry.
+ */
+ bpl += 2;
+ if (scsi_sg_count(scsi_cmnd)) {
+ /*
+ * The driver stores the segment count returned from pci_map_sg
+ * because this a count of dma-mappings used to map the use_sg
+ * pages. They are not guaranteed to be the same for those
+ * architectures that implement an IOMMU.
+ */
+
+ nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
+ scsi_sg_count(scsi_cmnd), datadir);
+ if (unlikely(!nseg))
+ return 1;
+
+ lpfc_cmd->seg_cnt = nseg;
+ if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9064 BLKGRD: %s: Too many sg segments from "
+ "dma_map_sg. Config %d, seg_cnt %d\n",
+ __func__, phba->cfg_sg_seg_cnt,
+ lpfc_cmd->seg_cnt);
+ WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
+ lpfc_cmd->seg_cnt = 0;
+ scsi_dma_unmap(scsi_cmnd);
+ return 2;
+ }
+
+ /*
+ * The driver established a maximum scatter-gather segment count
+ * during probe that limits the number of sg elements in any
+ * single scsi command. Just run through the seg_cnt and format
+ * the bde's.
+ * When using SLI-3 the driver will try to fit all the BDEs into
+ * the IOCB. If it can't then the BDEs get added to a BPL as it
+ * does for SLI-2 mode.
+ */
+ scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
+ physaddr = sg_dma_address(sgel);
+ if (phba->sli_rev == 3 &&
+ !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
+ !(iocbq->iocb_flag & DSS_SECURITY_OP) &&
+ nseg <= LPFC_EXT_DATA_BDE_COUNT) {
+ data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ data_bde->tus.f.bdeSize = sg_dma_len(sgel);
+ data_bde->addrLow = putPaddrLow(physaddr);
+ data_bde->addrHigh = putPaddrHigh(physaddr);
+ data_bde++;
+ } else {
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ bpl->tus.f.bdeSize = sg_dma_len(sgel);
+ bpl->tus.w = le32_to_cpu(bpl->tus.w);
+ bpl->addrLow =
+ le32_to_cpu(putPaddrLow(physaddr));
+ bpl->addrHigh =
+ le32_to_cpu(putPaddrHigh(physaddr));
+ bpl++;
+ }
+ }
+ }
+
+ /*
+ * Finish initializing those IOCB fields that are dependent on the
+ * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
+ * explicitly reinitialized and for SLI-3 the extended bde count is
+ * explicitly reinitialized since all iocb memory resources are reused.
+ */
+ if (phba->sli_rev == 3 &&
+ !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
+ !(iocbq->iocb_flag & DSS_SECURITY_OP)) {
+ if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
+ /*
+ * The extended IOCB format can only fit 3 BDE or a BPL.
+ * This I/O has more than 3 BDE so the 1st data bde will
+ * be a BPL that is filled in here.
+ */
+ physaddr = lpfc_cmd->dma_handle;
+ data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
+ data_bde->tus.f.bdeSize = (num_bde *
+ sizeof(struct ulp_bde64));
+ physaddr += (sizeof(struct fcp_cmnd) +
+ sizeof(struct fcp_rsp) +
+ (2 * sizeof(struct ulp_bde64)));
+ data_bde->addrHigh = putPaddrHigh(physaddr);
+ data_bde->addrLow = putPaddrLow(physaddr);
+ /* ebde count includes the response bde and data bpl */
+ iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
+ } else {
+ /* ebde count includes the response bde and data bdes */
+ iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
+ }
+ } else {
+ iocb_cmd->un.fcpi64.bdl.bdeSize =
+ ((num_bde + 2) * sizeof(struct ulp_bde64));
+ iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
+ }
+ fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
+
+ /*
+ * Due to difference in data length between DIF/non-DIF paths,
+ * we need to set word 4 of IOCB here
+ */
+ iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
+ return 0;
+}
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+
+/* Return BG_ERR_INIT if error injection is detected by Initiator */
+#define BG_ERR_INIT 0x1
+/* Return BG_ERR_TGT if error injection is detected by Target */
+#define BG_ERR_TGT 0x2
+/* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */
+#define BG_ERR_SWAP 0x10
+/**
+ * Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for
+ * error injection
+ **/
+#define BG_ERR_CHECK 0x20
+
+/**
+ * lpfc_bg_err_inject - Determine if we should inject an error
+ * @phba: The Hba for which this call is being executed.
+ * @sc: The SCSI command to examine
+ * @reftag: (out) BlockGuard reference tag for transmitted data
+ * @apptag: (out) BlockGuard application tag for transmitted data
+ * @new_guard (in) Value to replace CRC with if needed
+ *
+ * Returns BG_ERR_* bit mask or 0 if request ignored
+ **/
+static int
+lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
+{
+ struct scatterlist *sgpe; /* s/g prot entry */
+ struct lpfc_io_buf *lpfc_cmd = NULL;
+ struct scsi_dif_tuple *src = NULL;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_rport_data *rdata;
+ uint32_t op = scsi_get_prot_op(sc);
+ uint32_t blksize;
+ uint32_t numblks;
+ sector_t lba;
+ int rc = 0;
+ int blockoff = 0;
+
+ if (op == SCSI_PROT_NORMAL)
+ return 0;
+
+ sgpe = scsi_prot_sglist(sc);
+ lba = scsi_get_lba(sc);
+
+ /* First check if we need to match the LBA */
+ if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
+ blksize = lpfc_cmd_blksize(sc);
+ numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
+
+ /* Make sure we have the right LBA if one is specified */
+ if ((phba->lpfc_injerr_lba < lba) ||
+ (phba->lpfc_injerr_lba >= (lba + numblks)))
+ return 0;
+ if (sgpe) {
+ blockoff = phba->lpfc_injerr_lba - lba;
+ numblks = sg_dma_len(sgpe) /
+ sizeof(struct scsi_dif_tuple);
+ if (numblks < blockoff)
+ blockoff = numblks;
+ }
+ }
+
+ /* Next check if we need to match the remote NPortID or WWPN */
+ rdata = lpfc_rport_data_from_scsi_device(sc->device);
+ if (rdata && rdata->pnode) {
+ ndlp = rdata->pnode;
+
+ /* Make sure we have the right NPortID if one is specified */
+ if (phba->lpfc_injerr_nportid &&
+ (phba->lpfc_injerr_nportid != ndlp->nlp_DID))
+ return 0;
+
+ /*
+ * Make sure we have the right WWPN if one is specified.
+ * wwn[0] should be a non-zero NAA in a good WWPN.
+ */
+ if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
+ (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
+ sizeof(struct lpfc_name)) != 0))
+ return 0;
+ }
+
+ /* Setup a ptr to the protection data if the SCSI host provides it */
+ if (sgpe) {
+ src = (struct scsi_dif_tuple *)sg_virt(sgpe);
+ src += blockoff;
+ lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble;
+ }
+
+ /* Should we change the Reference Tag */
+ if (reftag) {
+ if (phba->lpfc_injerr_wref_cnt) {
+ switch (op) {
+ case SCSI_PROT_WRITE_PASS:
+ if (src) {
+ /*
+ * For WRITE_PASS, force the error
+ * to be sent on the wire. It should
+ * be detected by the Target.
+ * If blockoff != 0 error will be
+ * inserted in middle of the IO.
+ */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9076 BLKGRD: Injecting reftag error: "
+ "write lba x%lx + x%x oldrefTag x%x\n",
+ (unsigned long)lba, blockoff,
+ be32_to_cpu(src->ref_tag));
+
+ /*
+ * Save the old ref_tag so we can
+ * restore it on completion.
+ */
+ if (lpfc_cmd) {
+ lpfc_cmd->prot_data_type =
+ LPFC_INJERR_REFTAG;
+ lpfc_cmd->prot_data_segment =
+ src;
+ lpfc_cmd->prot_data =
+ src->ref_tag;
+ }
+ src->ref_tag = cpu_to_be32(0xDEADBEEF);
+ phba->lpfc_injerr_wref_cnt--;
+ if (phba->lpfc_injerr_wref_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_TGT | BG_ERR_CHECK;
+
+ break;
+ }
+ /* fall through */
+ case SCSI_PROT_WRITE_INSERT:
+ /*
+ * For WRITE_INSERT, force the error
+ * to be sent on the wire. It should be
+ * detected by the Target.
+ */
+ /* DEADBEEF will be the reftag on the wire */
+ *reftag = 0xDEADBEEF;
+ phba->lpfc_injerr_wref_cnt--;
+ if (phba->lpfc_injerr_wref_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_TGT | BG_ERR_CHECK;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9078 BLKGRD: Injecting reftag error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ case SCSI_PROT_WRITE_STRIP:
+ /*
+ * For WRITE_STRIP and WRITE_PASS,
+ * force the error on data
+ * being copied from SLI-Host to SLI-Port.
+ */
+ *reftag = 0xDEADBEEF;
+ phba->lpfc_injerr_wref_cnt--;
+ if (phba->lpfc_injerr_wref_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_INIT;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9077 BLKGRD: Injecting reftag error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ }
+ }
+ if (phba->lpfc_injerr_rref_cnt) {
+ switch (op) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_READ_PASS:
+ /*
+ * For READ_STRIP and READ_PASS, force the
+ * error on data being read off the wire. It
+ * should force an IO error to the driver.
+ */
+ *reftag = 0xDEADBEEF;
+ phba->lpfc_injerr_rref_cnt--;
+ if (phba->lpfc_injerr_rref_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_INIT;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9079 BLKGRD: Injecting reftag error: "
+ "read lba x%lx\n", (unsigned long)lba);
+ break;
+ }
+ }
+ }
+
+ /* Should we change the Application Tag */
+ if (apptag) {
+ if (phba->lpfc_injerr_wapp_cnt) {
+ switch (op) {
+ case SCSI_PROT_WRITE_PASS:
+ if (src) {
+ /*
+ * For WRITE_PASS, force the error
+ * to be sent on the wire. It should
+ * be detected by the Target.
+ * If blockoff != 0 error will be
+ * inserted in middle of the IO.
+ */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9080 BLKGRD: Injecting apptag error: "
+ "write lba x%lx + x%x oldappTag x%x\n",
+ (unsigned long)lba, blockoff,
+ be16_to_cpu(src->app_tag));
+
+ /*
+ * Save the old app_tag so we can
+ * restore it on completion.
+ */
+ if (lpfc_cmd) {
+ lpfc_cmd->prot_data_type =
+ LPFC_INJERR_APPTAG;
+ lpfc_cmd->prot_data_segment =
+ src;
+ lpfc_cmd->prot_data =
+ src->app_tag;
+ }
+ src->app_tag = cpu_to_be16(0xDEAD);
+ phba->lpfc_injerr_wapp_cnt--;
+ if (phba->lpfc_injerr_wapp_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_TGT | BG_ERR_CHECK;
+ break;
+ }
+ /* fall through */
+ case SCSI_PROT_WRITE_INSERT:
+ /*
+ * For WRITE_INSERT, force the
+ * error to be sent on the wire. It should be
+ * detected by the Target.
+ */
+ /* DEAD will be the apptag on the wire */
+ *apptag = 0xDEAD;
+ phba->lpfc_injerr_wapp_cnt--;
+ if (phba->lpfc_injerr_wapp_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_TGT | BG_ERR_CHECK;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0813 BLKGRD: Injecting apptag error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ case SCSI_PROT_WRITE_STRIP:
+ /*
+ * For WRITE_STRIP and WRITE_PASS,
+ * force the error on data
+ * being copied from SLI-Host to SLI-Port.
+ */
+ *apptag = 0xDEAD;
+ phba->lpfc_injerr_wapp_cnt--;
+ if (phba->lpfc_injerr_wapp_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_INIT;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0812 BLKGRD: Injecting apptag error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ }
+ }
+ if (phba->lpfc_injerr_rapp_cnt) {
+ switch (op) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_READ_PASS:
+ /*
+ * For READ_STRIP and READ_PASS, force the
+ * error on data being read off the wire. It
+ * should force an IO error to the driver.
+ */
+ *apptag = 0xDEAD;
+ phba->lpfc_injerr_rapp_cnt--;
+ if (phba->lpfc_injerr_rapp_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+ rc = BG_ERR_INIT;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0814 BLKGRD: Injecting apptag error: "
+ "read lba x%lx\n", (unsigned long)lba);
+ break;
+ }
+ }
+ }
+
+
+ /* Should we change the Guard Tag */
+ if (new_guard) {
+ if (phba->lpfc_injerr_wgrd_cnt) {
+ switch (op) {
+ case SCSI_PROT_WRITE_PASS:
+ rc = BG_ERR_CHECK;
+ /* fall through */
+
+ case SCSI_PROT_WRITE_INSERT:
+ /*
+ * For WRITE_INSERT, force the
+ * error to be sent on the wire. It should be
+ * detected by the Target.
+ */
+ phba->lpfc_injerr_wgrd_cnt--;
+ if (phba->lpfc_injerr_wgrd_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+
+ rc |= BG_ERR_TGT | BG_ERR_SWAP;
+ /* Signals the caller to swap CRC->CSUM */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0817 BLKGRD: Injecting guard error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ case SCSI_PROT_WRITE_STRIP:
+ /*
+ * For WRITE_STRIP and WRITE_PASS,
+ * force the error on data
+ * being copied from SLI-Host to SLI-Port.
+ */
+ phba->lpfc_injerr_wgrd_cnt--;
+ if (phba->lpfc_injerr_wgrd_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+
+ rc = BG_ERR_INIT | BG_ERR_SWAP;
+ /* Signals the caller to swap CRC->CSUM */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0816 BLKGRD: Injecting guard error: "
+ "write lba x%lx\n", (unsigned long)lba);
+ break;
+ }
+ }
+ if (phba->lpfc_injerr_rgrd_cnt) {
+ switch (op) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_READ_PASS:
+ /*
+ * For READ_STRIP and READ_PASS, force the
+ * error on data being read off the wire. It
+ * should force an IO error to the driver.
+ */
+ phba->lpfc_injerr_rgrd_cnt--;
+ if (phba->lpfc_injerr_rgrd_cnt == 0) {
+ phba->lpfc_injerr_nportid = 0;
+ phba->lpfc_injerr_lba =
+ LPFC_INJERR_LBA_OFF;
+ memset(&phba->lpfc_injerr_wwpn,
+ 0, sizeof(struct lpfc_name));
+ }
+
+ rc = BG_ERR_INIT | BG_ERR_SWAP;
+ /* Signals the caller to swap CRC->CSUM */
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "0818 BLKGRD: Injecting guard error: "
+ "read lba x%lx\n", (unsigned long)lba);
+ }
+ }
+ }
+
+ return rc;
+}
+#endif
+
+/**
+ * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
+ * the specified SCSI command.
+ * @phba: The Hba for which this call is being executed.
+ * @sc: The SCSI command to examine
+ * @txopt: (out) BlockGuard operation for transmitted data
+ * @rxopt: (out) BlockGuard operation for received data
+ *
+ * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
+ *
+ **/
+static int
+lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ uint8_t *txop, uint8_t *rxop)
+{
+ uint8_t ret = 0;
+
+ if (lpfc_cmd_guard_csum(sc)) {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ *rxop = BG_OP_IN_NODIF_OUT_CSUM;
+ *txop = BG_OP_IN_CSUM_OUT_NODIF;
+ break;
+
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ *rxop = BG_OP_IN_CRC_OUT_NODIF;
+ *txop = BG_OP_IN_NODIF_OUT_CRC;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ *rxop = BG_OP_IN_CRC_OUT_CSUM;
+ *txop = BG_OP_IN_CSUM_OUT_CRC;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9063 BLKGRD: Bad op/guard:%d/IP combination\n",
+ scsi_get_prot_op(sc));
+ ret = 1;
+ break;
+
+ }
+ } else {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ *rxop = BG_OP_IN_CRC_OUT_NODIF;
+ *txop = BG_OP_IN_NODIF_OUT_CRC;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ *rxop = BG_OP_IN_CRC_OUT_CRC;
+ *txop = BG_OP_IN_CRC_OUT_CRC;
+ break;
+
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ *rxop = BG_OP_IN_NODIF_OUT_CRC;
+ *txop = BG_OP_IN_CRC_OUT_NODIF;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
+ scsi_get_prot_op(sc));
+ ret = 1;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+/**
+ * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
+ * the specified SCSI command in order to force a guard tag error.
+ * @phba: The Hba for which this call is being executed.
+ * @sc: The SCSI command to examine
+ * @txopt: (out) BlockGuard operation for transmitted data
+ * @rxopt: (out) BlockGuard operation for received data
+ *
+ * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
+ *
+ **/
+static int
+lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ uint8_t *txop, uint8_t *rxop)
+{
+ uint8_t ret = 0;
+
+ if (lpfc_cmd_guard_csum(sc)) {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ *rxop = BG_OP_IN_NODIF_OUT_CRC;
+ *txop = BG_OP_IN_CRC_OUT_NODIF;
+ break;
+
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ *rxop = BG_OP_IN_CSUM_OUT_NODIF;
+ *txop = BG_OP_IN_NODIF_OUT_CSUM;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ *rxop = BG_OP_IN_CSUM_OUT_CRC;
+ *txop = BG_OP_IN_CRC_OUT_CSUM;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ break;
+
+ }
+ } else {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ *rxop = BG_OP_IN_CSUM_OUT_NODIF;
+ *txop = BG_OP_IN_NODIF_OUT_CSUM;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ *rxop = BG_OP_IN_CSUM_OUT_CSUM;
+ *txop = BG_OP_IN_CSUM_OUT_CSUM;
+ break;
+
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ *rxop = BG_OP_IN_NODIF_OUT_CSUM;
+ *txop = BG_OP_IN_CSUM_OUT_NODIF;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ break;
+ }
+ }
+
+ return ret;
+}
+#endif
+
+/**
+ * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
+ * @phba: The Hba for which this call is being executed.
+ * @sc: pointer to scsi command we're working on
+ * @bpl: pointer to buffer list for protection groups
+ * @datacnt: number of segments of data that have been dma mapped
+ *
+ * This function sets up BPL buffer list for protection groups of
+ * type LPFC_PG_TYPE_NO_DIF
+ *
+ * This is usually used when the HBA is instructed to generate
+ * DIFs and insert them into data stream (or strip DIF from
+ * incoming data stream)
+ *
+ * The buffer list consists of just one protection group described
+ * below:
+ * +-------------------------+
+ * start of prot group --> | PDE_5 |
+ * +-------------------------+
+ * | PDE_6 |
+ * +-------------------------+
+ * | Data BDE |
+ * +-------------------------+
+ * |more Data BDE's ... (opt)|
+ * +-------------------------+
+ *
+ *
+ * Note: Data s/g buffers have been dma mapped
+ *
+ * Returns the number of BDEs added to the BPL.
+ **/
+static int
+lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ struct ulp_bde64 *bpl, int datasegcnt)
+{
+ struct scatterlist *sgde = NULL; /* s/g data entry */
+ struct lpfc_pde5 *pde5 = NULL;
+ struct lpfc_pde6 *pde6 = NULL;
+ dma_addr_t physaddr;
+ int i = 0, num_bde = 0, status;
+ int datadir = sc->sc_data_direction;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ uint32_t rc;
+#endif
+ uint32_t checking = 1;
+ uint32_t reftag;
+ uint8_t txop, rxop;
+
+ status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
+ if (status)
+ goto out;
+
+ /* extract some info from the scsi command for pde*/
+ reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
+ if (rc) {
+ if (rc & BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc & BG_ERR_CHECK)
+ checking = 0;
+ }
+#endif
+
+ /* setup PDE5 with what we have */
+ pde5 = (struct lpfc_pde5 *) bpl;
+ memset(pde5, 0, sizeof(struct lpfc_pde5));
+ bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
+
+ /* Endianness conversion if necessary for PDE5 */
+ pde5->word0 = cpu_to_le32(pde5->word0);
+ pde5->reftag = cpu_to_le32(reftag);
+
+ /* advance bpl and increment bde count */
+ num_bde++;
+ bpl++;
+ pde6 = (struct lpfc_pde6 *) bpl;
+
+ /* setup PDE6 with the rest of the info */
+ memset(pde6, 0, sizeof(struct lpfc_pde6));
+ bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
+ bf_set(pde6_optx, pde6, txop);
+ bf_set(pde6_oprx, pde6, rxop);
+
+ /*
+ * We only need to check the data on READs, for WRITEs
+ * protection data is automatically generated, not checked.
+ */
+ if (datadir == DMA_FROM_DEVICE) {
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
+ bf_set(pde6_ce, pde6, checking);
+ else
+ bf_set(pde6_ce, pde6, 0);
+
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+ bf_set(pde6_re, pde6, checking);
+ else
+ bf_set(pde6_re, pde6, 0);
+ }
+ bf_set(pde6_ai, pde6, 1);
+ bf_set(pde6_ae, pde6, 0);
+ bf_set(pde6_apptagval, pde6, 0);
+
+ /* Endianness conversion if necessary for PDE6 */
+ pde6->word0 = cpu_to_le32(pde6->word0);
+ pde6->word1 = cpu_to_le32(pde6->word1);
+ pde6->word2 = cpu_to_le32(pde6->word2);
+
+ /* advance bpl and increment bde count */
+ num_bde++;
+ bpl++;
+
+ /* assumption: caller has already run dma_map_sg on command data */
+ scsi_for_each_sg(sc, sgde, datasegcnt, i) {
+ physaddr = sg_dma_address(sgde);
+ bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
+ bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
+ bpl->tus.f.bdeSize = sg_dma_len(sgde);
+ if (datadir == DMA_TO_DEVICE)
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ else
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
+ bpl->tus.w = le32_to_cpu(bpl->tus.w);
+ bpl++;
+ num_bde++;
+ }
+
+out:
+ return num_bde;
+}
+
+/**
+ * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
+ * @phba: The Hba for which this call is being executed.
+ * @sc: pointer to scsi command we're working on
+ * @bpl: pointer to buffer list for protection groups
+ * @datacnt: number of segments of data that have been dma mapped
+ * @protcnt: number of segment of protection data that have been dma mapped
+ *
+ * This function sets up BPL buffer list for protection groups of
+ * type LPFC_PG_TYPE_DIF
+ *
+ * This is usually used when DIFs are in their own buffers,
+ * separate from the data. The HBA can then by instructed
+ * to place the DIFs in the outgoing stream. For read operations,
+ * The HBA could extract the DIFs and place it in DIF buffers.
+ *
+ * The buffer list for this type consists of one or more of the
+ * protection groups described below:
+ * +-------------------------+
+ * start of first prot group --> | PDE_5 |
+ * +-------------------------+
+ * | PDE_6 |
+ * +-------------------------+
+ * | PDE_7 (Prot BDE) |
+ * +-------------------------+
+ * | Data BDE |
+ * +-------------------------+
+ * |more Data BDE's ... (opt)|
+ * +-------------------------+
+ * start of new prot group --> | PDE_5 |
+ * +-------------------------+
+ * | ... |
+ * +-------------------------+
+ *
+ * Note: It is assumed that both data and protection s/g buffers have been
+ * mapped for DMA
+ *
+ * Returns the number of BDEs added to the BPL.
+ **/
+static int
+lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ struct ulp_bde64 *bpl, int datacnt, int protcnt)
+{
+ struct scatterlist *sgde = NULL; /* s/g data entry */
+ struct scatterlist *sgpe = NULL; /* s/g prot entry */
+ struct lpfc_pde5 *pde5 = NULL;
+ struct lpfc_pde6 *pde6 = NULL;
+ struct lpfc_pde7 *pde7 = NULL;
+ dma_addr_t dataphysaddr, protphysaddr;
+ unsigned short curr_data = 0, curr_prot = 0;
+ unsigned int split_offset;
+ unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
+ unsigned int protgrp_blks, protgrp_bytes;
+ unsigned int remainder, subtotal;
+ int status;
+ int datadir = sc->sc_data_direction;
+ unsigned char pgdone = 0, alldone = 0;
+ unsigned blksize;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ uint32_t rc;
+#endif
+ uint32_t checking = 1;
+ uint32_t reftag;
+ uint8_t txop, rxop;
+ int num_bde = 0;
+
+ sgpe = scsi_prot_sglist(sc);
+ sgde = scsi_sglist(sc);
+
+ if (!sgpe || !sgde) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9020 Invalid s/g entry: data=x%px prot=x%px\n",
+ sgpe, sgde);
+ return 0;
+ }
+
+ status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
+ if (status)
+ goto out;
+
+ /* extract some info from the scsi command */
+ blksize = lpfc_cmd_blksize(sc);
+ reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
+ if (rc) {
+ if (rc & BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc & BG_ERR_CHECK)
+ checking = 0;
+ }
+#endif
+
+ split_offset = 0;
+ do {
+ /* Check to see if we ran out of space */
+ if (num_bde >= (phba->cfg_total_seg_cnt - 2))
+ return num_bde + 3;
+
+ /* setup PDE5 with what we have */
+ pde5 = (struct lpfc_pde5 *) bpl;
+ memset(pde5, 0, sizeof(struct lpfc_pde5));
+ bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
+
+ /* Endianness conversion if necessary for PDE5 */
+ pde5->word0 = cpu_to_le32(pde5->word0);
+ pde5->reftag = cpu_to_le32(reftag);
+
+ /* advance bpl and increment bde count */
+ num_bde++;
+ bpl++;
+ pde6 = (struct lpfc_pde6 *) bpl;
+
+ /* setup PDE6 with the rest of the info */
+ memset(pde6, 0, sizeof(struct lpfc_pde6));
+ bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
+ bf_set(pde6_optx, pde6, txop);
+ bf_set(pde6_oprx, pde6, rxop);
+
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
+ bf_set(pde6_ce, pde6, checking);
+ else
+ bf_set(pde6_ce, pde6, 0);
+
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+ bf_set(pde6_re, pde6, checking);
+ else
+ bf_set(pde6_re, pde6, 0);
+
+ bf_set(pde6_ai, pde6, 1);
+ bf_set(pde6_ae, pde6, 0);
+ bf_set(pde6_apptagval, pde6, 0);
+
+ /* Endianness conversion if necessary for PDE6 */
+ pde6->word0 = cpu_to_le32(pde6->word0);
+ pde6->word1 = cpu_to_le32(pde6->word1);
+ pde6->word2 = cpu_to_le32(pde6->word2);
+
+ /* advance bpl and increment bde count */
+ num_bde++;
+ bpl++;
+
+ /* setup the first BDE that points to protection buffer */
+ protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
+ protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
+
+ /* must be integer multiple of the DIF block length */
+ BUG_ON(protgroup_len % 8);
+
+ pde7 = (struct lpfc_pde7 *) bpl;
+ memset(pde7, 0, sizeof(struct lpfc_pde7));
+ bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
+
+ pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
+ pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
+
+ protgrp_blks = protgroup_len / 8;
+ protgrp_bytes = protgrp_blks * blksize;
+
+ /* check if this pde is crossing the 4K boundary; if so split */
+ if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
+ protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
+ protgroup_offset += protgroup_remainder;
+ protgrp_blks = protgroup_remainder / 8;
+ protgrp_bytes = protgrp_blks * blksize;
+ } else {
+ protgroup_offset = 0;
+ curr_prot++;
+ }
+
+ num_bde++;
+
+ /* setup BDE's for data blocks associated with DIF data */
+ pgdone = 0;
+ subtotal = 0; /* total bytes processed for current prot grp */
+ while (!pgdone) {
+ /* Check to see if we ran out of space */
+ if (num_bde >= phba->cfg_total_seg_cnt)
+ return num_bde + 1;
+
+ if (!sgde) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9065 BLKGRD:%s Invalid data segment\n",
+ __func__);
+ return 0;
+ }
+ bpl++;
+ dataphysaddr = sg_dma_address(sgde) + split_offset;
+ bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
+ bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
+
+ remainder = sg_dma_len(sgde) - split_offset;
+
+ if ((subtotal + remainder) <= protgrp_bytes) {
+ /* we can use this whole buffer */
+ bpl->tus.f.bdeSize = remainder;
+ split_offset = 0;
+
+ if ((subtotal + remainder) == protgrp_bytes)
+ pgdone = 1;
+ } else {
+ /* must split this buffer with next prot grp */
+ bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
+ split_offset += bpl->tus.f.bdeSize;
+ }
+
+ subtotal += bpl->tus.f.bdeSize;
+
+ if (datadir == DMA_TO_DEVICE)
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ else
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
+ bpl->tus.w = le32_to_cpu(bpl->tus.w);
+
+ num_bde++;
+ curr_data++;
+
+ if (split_offset)
+ break;
+
+ /* Move to the next s/g segment if possible */
+ sgde = sg_next(sgde);
+
+ }
+
+ if (protgroup_offset) {
+ /* update the reference tag */
+ reftag += protgrp_blks;
+ bpl++;
+ continue;
+ }
+
+ /* are we done ? */
+ if (curr_prot == protcnt) {
+ alldone = 1;
+ } else if (curr_prot < protcnt) {
+ /* advance to next prot buffer */
+ sgpe = sg_next(sgpe);
+ bpl++;
+
+ /* update the reference tag */
+ reftag += protgrp_blks;
+ } else {
+ /* if we're here, we have a bug */
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9054 BLKGRD: bug in %s\n", __func__);
+ }
+
+ } while (!alldone);
+out:
+
+ return num_bde;
+}
+
+/**
+ * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
+ * @phba: The Hba for which this call is being executed.
+ * @sc: pointer to scsi command we're working on
+ * @sgl: pointer to buffer list for protection groups
+ * @datacnt: number of segments of data that have been dma mapped
+ *
+ * This function sets up SGL buffer list for protection groups of
+ * type LPFC_PG_TYPE_NO_DIF
+ *
+ * This is usually used when the HBA is instructed to generate
+ * DIFs and insert them into data stream (or strip DIF from
+ * incoming data stream)
+ *
+ * The buffer list consists of just one protection group described
+ * below:
+ * +-------------------------+
+ * start of prot group --> | DI_SEED |
+ * +-------------------------+
+ * | Data SGE |
+ * +-------------------------+
+ * |more Data SGE's ... (opt)|
+ * +-------------------------+
+ *
+ *
+ * Note: Data s/g buffers have been dma mapped
+ *
+ * Returns the number of SGEs added to the SGL.
+ **/
+static uint32_t
+lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ struct sli4_sge *sgl, int datasegcnt,
+ struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scatterlist *sgde = NULL; /* s/g data entry */
+ struct sli4_sge_diseed *diseed = NULL;
+ dma_addr_t physaddr;
+ int i = 0, status;
+ uint32_t reftag, num_sge = 0;
+ uint8_t txop, rxop;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ uint32_t rc;
+#endif
+ uint32_t checking = 1;
+ uint32_t dma_len;
+ uint32_t dma_offset = 0;
+ struct sli4_hybrid_sgl *sgl_xtra = NULL;
+ int j;
+ bool lsp_just_set = false;
+
+ status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
+ if (status)
+ goto out;
+
+ /* extract some info from the scsi command for pde*/
+ reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
+ if (rc) {
+ if (rc & BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc & BG_ERR_CHECK)
+ checking = 0;
+ }
+#endif
+
+ /* setup DISEED with what we have */
+ diseed = (struct sli4_sge_diseed *) sgl;
+ memset(diseed, 0, sizeof(struct sli4_sge_diseed));
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
+
+ /* Endianness conversion if necessary */
+ diseed->ref_tag = cpu_to_le32(reftag);
+ diseed->ref_tag_tran = diseed->ref_tag;
+
+ /*
+ * We only need to check the data on READs, for WRITEs
+ * protection data is automatically generated, not checked.
+ */
+ if (sc->sc_data_direction == DMA_FROM_DEVICE) {
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
+ bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
+ else
+ bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
+
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+ bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
+ else
+ bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
+ }
+
+ /* setup DISEED with the rest of the info */
+ bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
+ bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
+
+ bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
+ bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
+
+ /* Endianness conversion if necessary for DISEED */
+ diseed->word2 = cpu_to_le32(diseed->word2);
+ diseed->word3 = cpu_to_le32(diseed->word3);
+
+ /* advance bpl and increment sge count */
+ num_sge++;
+ sgl++;
+
+ /* assumption: caller has already run dma_map_sg on command data */
+ sgde = scsi_sglist(sc);
+ j = 3;
+ for (i = 0; i < datasegcnt; i++) {
+ /* clear it */
+ sgl->word2 = 0;
+
+ /* do we need to expand the segment */
+ if (!lsp_just_set && !((j + 1) % phba->border_sge_num) &&
+ ((datasegcnt - 1) != i)) {
+ /* set LSP type */
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP);
+
+ sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd);
+
+ if (unlikely(!sgl_xtra)) {
+ lpfc_cmd->seg_cnt = 0;
+ return 0;
+ }
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(
+ sgl_xtra->dma_phys_sgl));
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(
+ sgl_xtra->dma_phys_sgl));
+
+ } else {
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
+ }
+
+ if (!(bf_get(lpfc_sli4_sge_type, sgl) & LPFC_SGE_TYPE_LSP)) {
+ if ((datasegcnt - 1) == i)
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ physaddr = sg_dma_address(sgde);
+ dma_len = sg_dma_len(sgde);
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
+
+ bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(dma_len);
+
+ dma_offset += dma_len;
+ sgde = sg_next(sgde);
+
+ sgl++;
+ num_sge++;
+ lsp_just_set = false;
+
+ } else {
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size);
+
+ sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
+ i = i - 1;
+
+ lsp_just_set = true;
+ }
+
+ j++;
+
+ }
+
+out:
+ return num_sge;
+}
+
+/**
+ * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
+ * @phba: The Hba for which this call is being executed.
+ * @sc: pointer to scsi command we're working on
+ * @sgl: pointer to buffer list for protection groups
+ * @datacnt: number of segments of data that have been dma mapped
+ * @protcnt: number of segment of protection data that have been dma mapped
+ *
+ * This function sets up SGL buffer list for protection groups of
+ * type LPFC_PG_TYPE_DIF
+ *
+ * This is usually used when DIFs are in their own buffers,
+ * separate from the data. The HBA can then by instructed
+ * to place the DIFs in the outgoing stream. For read operations,
+ * The HBA could extract the DIFs and place it in DIF buffers.
+ *
+ * The buffer list for this type consists of one or more of the
+ * protection groups described below:
+ * +-------------------------+
+ * start of first prot group --> | DISEED |
+ * +-------------------------+
+ * | DIF (Prot SGE) |
+ * +-------------------------+
+ * | Data SGE |
+ * +-------------------------+
+ * |more Data SGE's ... (opt)|
+ * +-------------------------+
+ * start of new prot group --> | DISEED |
+ * +-------------------------+
+ * | ... |
+ * +-------------------------+
+ *
+ * Note: It is assumed that both data and protection s/g buffers have been
+ * mapped for DMA
+ *
+ * Returns the number of SGEs added to the SGL.
+ **/
+static uint32_t
+lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
+ struct sli4_sge *sgl, int datacnt, int protcnt,
+ struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scatterlist *sgde = NULL; /* s/g data entry */
+ struct scatterlist *sgpe = NULL; /* s/g prot entry */
+ struct sli4_sge_diseed *diseed = NULL;
+ dma_addr_t dataphysaddr, protphysaddr;
+ unsigned short curr_data = 0, curr_prot = 0;
+ unsigned int split_offset;
+ unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
+ unsigned int protgrp_blks, protgrp_bytes;
+ unsigned int remainder, subtotal;
+ int status;
+ unsigned char pgdone = 0, alldone = 0;
+ unsigned blksize;
+ uint32_t reftag;
+ uint8_t txop, rxop;
+ uint32_t dma_len;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ uint32_t rc;
+#endif
+ uint32_t checking = 1;
+ uint32_t dma_offset = 0, num_sge = 0;
+ int j = 2;
+ struct sli4_hybrid_sgl *sgl_xtra = NULL;
+
+ sgpe = scsi_prot_sglist(sc);
+ sgde = scsi_sglist(sc);
+
+ if (!sgpe || !sgde) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9082 Invalid s/g entry: data=x%px prot=x%px\n",
+ sgpe, sgde);
+ return 0;
+ }
+
+ status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
+ if (status)
+ goto out;
+
+ /* extract some info from the scsi command */
+ blksize = lpfc_cmd_blksize(sc);
+ reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
+ if (rc) {
+ if (rc & BG_ERR_SWAP)
+ lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
+ if (rc & BG_ERR_CHECK)
+ checking = 0;
+ }
+#endif
+
+ split_offset = 0;
+ do {
+ /* Check to see if we ran out of space */
+ if ((num_sge >= (phba->cfg_total_seg_cnt - 2)) &&
+ !(phba->cfg_xpsgl))
+ return num_sge + 3;
+
+ /* DISEED and DIF have to be together */
+ if (!((j + 1) % phba->border_sge_num) ||
+ !((j + 2) % phba->border_sge_num) ||
+ !((j + 3) % phba->border_sge_num)) {
+ sgl->word2 = 0;
+
+ /* set LSP type */
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP);
+
+ sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd);
+
+ if (unlikely(!sgl_xtra)) {
+ goto out;
+ } else {
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(
+ sgl_xtra->dma_phys_sgl));
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(
+ sgl_xtra->dma_phys_sgl));
+ }
+
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size);
+
+ sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
+ j = 0;
+ }
+
+ /* setup DISEED with what we have */
+ diseed = (struct sli4_sge_diseed *) sgl;
+ memset(diseed, 0, sizeof(struct sli4_sge_diseed));
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
+
+ /* Endianness conversion if necessary */
+ diseed->ref_tag = cpu_to_le32(reftag);
+ diseed->ref_tag_tran = diseed->ref_tag;
+
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
+ bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
+
+ } else {
+ bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
+ /*
+ * When in this mode, the hardware will replace
+ * the guard tag from the host with a
+ * newly generated good CRC for the wire.
+ * Switch to raw mode here to avoid this
+ * behavior. What the host sends gets put on the wire.
+ */
+ if (txop == BG_OP_IN_CRC_OUT_CRC) {
+ txop = BG_OP_RAW_MODE;
+ rxop = BG_OP_RAW_MODE;
+ }
+ }
+
+
+ if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+ bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
+ else
+ bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
+
+ /* setup DISEED with the rest of the info */
+ bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
+ bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
+
+ bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
+ bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
+
+ /* Endianness conversion if necessary for DISEED */
+ diseed->word2 = cpu_to_le32(diseed->word2);
+ diseed->word3 = cpu_to_le32(diseed->word3);
+
+ /* advance sgl and increment bde count */
+ num_sge++;
+
+ sgl++;
+ j++;
+
+ /* setup the first BDE that points to protection buffer */
+ protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
+ protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
+
+ /* must be integer multiple of the DIF block length */
+ BUG_ON(protgroup_len % 8);
+
+ /* Now setup DIF SGE */
+ sgl->word2 = 0;
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
+ sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
+ sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = 0;
+
+ protgrp_blks = protgroup_len / 8;
+ protgrp_bytes = protgrp_blks * blksize;
+
+ /* check if DIF SGE is crossing the 4K boundary; if so split */
+ if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
+ protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
+ protgroup_offset += protgroup_remainder;
+ protgrp_blks = protgroup_remainder / 8;
+ protgrp_bytes = protgrp_blks * blksize;
+ } else {
+ protgroup_offset = 0;
+ curr_prot++;
+ }
+
+ num_sge++;
+
+ /* setup SGE's for data blocks associated with DIF data */
+ pgdone = 0;
+ subtotal = 0; /* total bytes processed for current prot grp */
+
+ sgl++;
+ j++;
+
+ while (!pgdone) {
+ /* Check to see if we ran out of space */
+ if ((num_sge >= phba->cfg_total_seg_cnt) &&
+ !phba->cfg_xpsgl)
+ return num_sge + 1;
+
+ if (!sgde) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9086 BLKGRD:%s Invalid data segment\n",
+ __func__);
+ return 0;
+ }
+
+ if (!((j + 1) % phba->border_sge_num)) {
+ sgl->word2 = 0;
+
+ /* set LSP type */
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_LSP);
+
+ sgl_xtra = lpfc_get_sgl_per_hdwq(phba,
+ lpfc_cmd);
+
+ if (unlikely(!sgl_xtra)) {
+ goto out;
+ } else {
+ sgl->addr_lo = cpu_to_le32(
+ putPaddrLow(sgl_xtra->dma_phys_sgl));
+ sgl->addr_hi = cpu_to_le32(
+ putPaddrHigh(sgl_xtra->dma_phys_sgl));
+ }
+
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(
+ phba->cfg_sg_dma_buf_size);
+
+ sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
+ } else {
+ dataphysaddr = sg_dma_address(sgde) +
+ split_offset;
+
+ remainder = sg_dma_len(sgde) - split_offset;
+
+ if ((subtotal + remainder) <= protgrp_bytes) {
+ /* we can use this whole buffer */
+ dma_len = remainder;
+ split_offset = 0;
+
+ if ((subtotal + remainder) ==
+ protgrp_bytes)
+ pgdone = 1;
+ } else {
+ /* must split this buffer with next
+ * prot grp
+ */
+ dma_len = protgrp_bytes - subtotal;
+ split_offset += dma_len;
+ }
+
+ subtotal += dma_len;
+
+ sgl->word2 = 0;
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(
+ dataphysaddr));
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(
+ dataphysaddr));
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+ bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_DATA);
+
+ sgl->sge_len = cpu_to_le32(dma_len);
+ dma_offset += dma_len;
+
+ num_sge++;
+ curr_data++;
+
+ if (split_offset) {
+ sgl++;
+ j++;
+ break;
+ }
+
+ /* Move to the next s/g segment if possible */
+ sgde = sg_next(sgde);
+
+ sgl++;
+ }
+
+ j++;
+ }
+
+ if (protgroup_offset) {
+ /* update the reference tag */
+ reftag += protgrp_blks;
+ continue;
+ }
+
+ /* are we done ? */
+ if (curr_prot == protcnt) {
+ /* mark the last SGL */
+ sgl--;
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ alldone = 1;
+ } else if (curr_prot < protcnt) {
+ /* advance to next prot buffer */
+ sgpe = sg_next(sgpe);
+
+ /* update the reference tag */
+ reftag += protgrp_blks;
+ } else {
+ /* if we're here, we have a bug */
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9085 BLKGRD: bug in %s\n", __func__);
+ }
+
+ } while (!alldone);
+
+out:
+
+ return num_sge;
+}
+
+/**
+ * lpfc_prot_group_type - Get prtotection group type of SCSI command
+ * @phba: The Hba for which this call is being executed.
+ * @sc: pointer to scsi command we're working on
+ *
+ * Given a SCSI command that supports DIF, determine composition of protection
+ * groups involved in setting up buffer lists
+ *
+ * Returns: Protection group type (with or without DIF)
+ *
+ **/
+static int
+lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
+{
+ int ret = LPFC_PG_TYPE_INVALID;
+ unsigned char op = scsi_get_prot_op(sc);
+
+ switch (op) {
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ ret = LPFC_PG_TYPE_NO_DIF;
+ break;
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ ret = LPFC_PG_TYPE_DIF_BUF;
+ break;
+ default:
+ if (phba)
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9021 Unsupported protection op:%d\n",
+ op);
+ break;
+ }
+ return ret;
+}
+
+/**
+ * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be adjusted.
+ *
+ * Adjust the data length to account for how much data
+ * is actually on the wire.
+ *
+ * returns the adjusted data length
+ **/
+static int
+lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
+ struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scsi_cmnd *sc = lpfc_cmd->pCmd;
+ int fcpdl;
+
+ fcpdl = scsi_bufflen(sc);
+
+ /* Check if there is protection data on the wire */
+ if (sc->sc_data_direction == DMA_FROM_DEVICE) {
+ /* Read check for protection data */
+ if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
+ return fcpdl;
+
+ } else {
+ /* Write check for protection data */
+ if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
+ return fcpdl;
+ }
+
+ /*
+ * If we are in DIF Type 1 mode every data block has a 8 byte
+ * DIF (trailer) attached to it. Must ajust FCP data length
+ * to account for the protection data.
+ */
+ fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
+
+ return fcpdl;
+}
+
+/**
+ * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be prep'ed.
+ *
+ * This is the protection/DIF aware version of
+ * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
+ * two functions eventually, but for now, it's here.
+ * RETURNS 0 - SUCCESS,
+ * 1 - Failed DMA map, retry.
+ * 2 - Invalid scsi cmd or prot-type. Do not rety.
+ **/
+static int
+lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
+ struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
+ struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl;
+ IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
+ uint32_t num_bde = 0;
+ int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
+ int prot_group_type = 0;
+ int fcpdl;
+ int ret = 1;
+ struct lpfc_vport *vport = phba->pport;
+
+ /*
+ * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
+ * fcp_rsp regions to the first data bde entry
+ */
+ bpl += 2;
+ if (scsi_sg_count(scsi_cmnd)) {
+ /*
+ * The driver stores the segment count returned from pci_map_sg
+ * because this a count of dma-mappings used to map the use_sg
+ * pages. They are not guaranteed to be the same for those
+ * architectures that implement an IOMMU.
+ */
+ datasegcnt = dma_map_sg(&phba->pcidev->dev,
+ scsi_sglist(scsi_cmnd),
+ scsi_sg_count(scsi_cmnd), datadir);
+ if (unlikely(!datasegcnt))
+ return 1;
+
+ lpfc_cmd->seg_cnt = datasegcnt;
+
+ /* First check if data segment count from SCSI Layer is good */
+ if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
+ WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
+ ret = 2;
+ goto err;
+ }
+
+ prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
+
+ switch (prot_group_type) {
+ case LPFC_PG_TYPE_NO_DIF:
+
+ /* Here we need to add a PDE5 and PDE6 to the count */
+ if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) {
+ ret = 2;
+ goto err;
+ }
+
+ num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
+ datasegcnt);
+ /* we should have 2 or more entries in buffer list */
+ if (num_bde < 2) {
+ ret = 2;
+ goto err;
+ }
+ break;
+
+ case LPFC_PG_TYPE_DIF_BUF:
+ /*
+ * This type indicates that protection buffers are
+ * passed to the driver, so that needs to be prepared
+ * for DMA
+ */
+ protsegcnt = dma_map_sg(&phba->pcidev->dev,
+ scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd), datadir);
+ if (unlikely(!protsegcnt)) {
+ scsi_dma_unmap(scsi_cmnd);
+ return 1;
+ }
+
+ lpfc_cmd->prot_seg_cnt = protsegcnt;
+
+ /*
+ * There is a minimun of 4 BPLs used for every
+ * protection data segment.
+ */
+ if ((lpfc_cmd->prot_seg_cnt * 4) >
+ (phba->cfg_total_seg_cnt - 2)) {
+ ret = 2;
+ goto err;
+ }
+
+ num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
+ datasegcnt, protsegcnt);
+ /* we should have 3 or more entries in buffer list */
+ if ((num_bde < 3) ||
+ (num_bde > phba->cfg_total_seg_cnt)) {
+ ret = 2;
+ goto err;
+ }
+ break;
+
+ case LPFC_PG_TYPE_INVALID:
+ default:
+ scsi_dma_unmap(scsi_cmnd);
+ lpfc_cmd->seg_cnt = 0;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9022 Unexpected protection group %i\n",
+ prot_group_type);
+ return 2;
+ }
+ }
+
+ /*
+ * Finish initializing those IOCB fields that are dependent on the
+ * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
+ * reinitialized since all iocb memory resources are used many times
+ * for transmit, receive, and continuation bpl's.
+ */
+ iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
+ iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
+ iocb_cmd->ulpBdeCount = 1;
+ iocb_cmd->ulpLe = 1;
+
+ fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
+ fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
+
+ /*
+ * Due to difference in data length between DIF/non-DIF paths,
+ * we need to set word 4 of IOCB here
+ */
+ iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
+
+ /*
+ * For First burst, we may need to adjust the initial transfer
+ * length for DIF
+ */
+ if (iocb_cmd->un.fcpi.fcpi_XRdy &&
+ (fcpdl < vport->cfg_first_burst_size))
+ iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
+
+ return 0;
+err:
+ if (lpfc_cmd->seg_cnt)
+ scsi_dma_unmap(scsi_cmnd);
+ if (lpfc_cmd->prot_seg_cnt)
+ dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ scsi_cmnd->sc_data_direction);
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9023 Cannot setup S/G List for HBA"
+ "IO segs %d/%d BPL %d SCSI %d: %d %d\n",
+ lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
+ phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
+ prot_group_type, num_bde);
+
+ lpfc_cmd->seg_cnt = 0;
+ lpfc_cmd->prot_seg_cnt = 0;
+ return ret;
+}
+
+/*
+ * This function calcuates the T10 DIF guard tag
+ * on the specified data using a CRC algorithmn
+ * using crc_t10dif.
+ */
+static uint16_t
+lpfc_bg_crc(uint8_t *data, int count)
+{
+ uint16_t crc = 0;
+ uint16_t x;
+
+ crc = crc_t10dif(data, count);
+ x = cpu_to_be16(crc);
+ return x;
+}
+
+/*
+ * This function calcuates the T10 DIF guard tag
+ * on the specified data using a CSUM algorithmn
+ * using ip_compute_csum.
+ */
+static uint16_t
+lpfc_bg_csum(uint8_t *data, int count)
+{
+ uint16_t ret;
+
+ ret = ip_compute_csum(data, count);
+ return ret;
+}
+
+/*
+ * This function examines the protection data to try to determine
+ * what type of T10-DIF error occurred.
+ */
+static void
+lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scatterlist *sgpe; /* s/g prot entry */
+ struct scatterlist *sgde; /* s/g data entry */
+ struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
+ struct scsi_dif_tuple *src = NULL;
+ uint8_t *data_src = NULL;
+ uint16_t guard_tag;
+ uint16_t start_app_tag, app_tag;
+ uint32_t start_ref_tag, ref_tag;
+ int prot, protsegcnt;
+ int err_type, len, data_len;
+ int chk_ref, chk_app, chk_guard;
+ uint16_t sum;
+ unsigned blksize;
+
+ err_type = BGS_GUARD_ERR_MASK;
+ sum = 0;
+ guard_tag = 0;
+
+ /* First check to see if there is protection data to examine */
+ prot = scsi_get_prot_op(cmd);
+ if ((prot == SCSI_PROT_READ_STRIP) ||
+ (prot == SCSI_PROT_WRITE_INSERT) ||
+ (prot == SCSI_PROT_NORMAL))
+ goto out;
+
+ /* Currently the driver just supports ref_tag and guard_tag checking */
+ chk_ref = 1;
+ chk_app = 0;
+ chk_guard = 0;
+
+ /* Setup a ptr to the protection data provided by the SCSI host */
+ sgpe = scsi_prot_sglist(cmd);
+ protsegcnt = lpfc_cmd->prot_seg_cnt;
+
+ if (sgpe && protsegcnt) {
+
+ /*
+ * We will only try to verify guard tag if the segment
+ * data length is a multiple of the blksize.
+ */
+ sgde = scsi_sglist(cmd);
+ blksize = lpfc_cmd_blksize(cmd);
+ data_src = (uint8_t *)sg_virt(sgde);
+ data_len = sgde->length;
+ if ((data_len & (blksize - 1)) == 0)
+ chk_guard = 1;
+
+ src = (struct scsi_dif_tuple *)sg_virt(sgpe);
+ start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */
+ start_app_tag = src->app_tag;
+ len = sgpe->length;
+ while (src && protsegcnt) {
+ while (len) {
+
+ /*
+ * First check to see if a protection data
+ * check is valid
+ */
+ if ((src->ref_tag == T10_PI_REF_ESCAPE) ||
+ (src->app_tag == T10_PI_APP_ESCAPE)) {
+ start_ref_tag++;
+ goto skipit;
+ }
+
+ /* First Guard Tag checking */
+ if (chk_guard) {
+ guard_tag = src->guard_tag;
+ if (lpfc_cmd_guard_csum(cmd))
+ sum = lpfc_bg_csum(data_src,
+ blksize);
+ else
+ sum = lpfc_bg_crc(data_src,
+ blksize);
+ if ((guard_tag != sum)) {
+ err_type = BGS_GUARD_ERR_MASK;
+ goto out;
+ }
+ }
+
+ /* Reference Tag checking */
+ ref_tag = be32_to_cpu(src->ref_tag);
+ if (chk_ref && (ref_tag != start_ref_tag)) {
+ err_type = BGS_REFTAG_ERR_MASK;
+ goto out;
+ }
+ start_ref_tag++;
+
+ /* App Tag checking */
+ app_tag = src->app_tag;
+ if (chk_app && (app_tag != start_app_tag)) {
+ err_type = BGS_APPTAG_ERR_MASK;
+ goto out;
+ }
+skipit:
+ len -= sizeof(struct scsi_dif_tuple);
+ if (len < 0)
+ len = 0;
+ src++;
+
+ data_src += blksize;
+ data_len -= blksize;
+
+ /*
+ * Are we at the end of the Data segment?
+ * The data segment is only used for Guard
+ * tag checking.
+ */
+ if (chk_guard && (data_len == 0)) {
+ chk_guard = 0;
+ sgde = sg_next(sgde);
+ if (!sgde)
+ goto out;
+
+ data_src = (uint8_t *)sg_virt(sgde);
+ data_len = sgde->length;
+ if ((data_len & (blksize - 1)) == 0)
+ chk_guard = 1;
+ }
+ }
+
+ /* Goto the next Protection data segment */
+ sgpe = sg_next(sgpe);
+ if (sgpe) {
+ src = (struct scsi_dif_tuple *)sg_virt(sgpe);
+ len = sgpe->length;
+ } else {
+ src = NULL;
+ }
+ protsegcnt--;
+ }
+ }
+out:
+ if (err_type == BGS_GUARD_ERR_MASK) {
+ scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x10, 0x1);
+ cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
+ SAM_STAT_CHECK_CONDITION;
+ phba->bg_guard_err_cnt++;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n",
+ (unsigned long)scsi_get_lba(cmd),
+ sum, guard_tag);
+
+ } else if (err_type == BGS_REFTAG_ERR_MASK) {
+ scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x10, 0x3);
+ cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
+ SAM_STAT_CHECK_CONDITION;
+
+ phba->bg_reftag_err_cnt++;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n",
+ (unsigned long)scsi_get_lba(cmd),
+ ref_tag, start_ref_tag);
+
+ } else if (err_type == BGS_APPTAG_ERR_MASK) {
+ scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x10, 0x2);
+ cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
+ SAM_STAT_CHECK_CONDITION;
+
+ phba->bg_apptag_err_cnt++;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9041 BLKGRD: LBA %lx app_tag error %x != %x\n",
+ (unsigned long)scsi_get_lba(cmd),
+ app_tag, start_app_tag);
+ }
+}
+
+
+/*
+ * This function checks for BlockGuard errors detected by
+ * the HBA. In case of errors, the ASC/ASCQ fields in the
+ * sense buffer will be set accordingly, paired with
+ * ILLEGAL_REQUEST to signal to the kernel that the HBA
+ * detected corruption.
+ *
+ * Returns:
+ * 0 - No error found
+ * 1 - BlockGuard error found
+ * -1 - Internal error (bad profile, ...etc)
+ */
+static int
+lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
+ struct lpfc_iocbq *pIocbOut)
+{
+ struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
+ struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
+ int ret = 0;
+ uint32_t bghm = bgf->bghm;
+ uint32_t bgstat = bgf->bgstat;
+ uint64_t failing_sector = 0;
+
+ if (lpfc_bgs_get_invalid_prof(bgstat)) {
+ cmd->result = DID_ERROR << 16;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9072 BLKGRD: Invalid BG Profile in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+ ret = (-1);
+ goto out;
+ }
+
+ if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
+ cmd->result = DID_ERROR << 16;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9073 BLKGRD: Invalid BG PDIF Block in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+ ret = (-1);
+ goto out;
+ }
+
+ if (lpfc_bgs_get_guard_err(bgstat)) {
+ ret = 1;
+
+ scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x10, 0x1);
+ cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
+ SAM_STAT_CHECK_CONDITION;
+ phba->bg_guard_err_cnt++;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9055 BLKGRD: Guard Tag error in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+ }
+
+ if (lpfc_bgs_get_reftag_err(bgstat)) {
+ ret = 1;
+
+ scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x10, 0x3);
+ cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
+ SAM_STAT_CHECK_CONDITION;
+
+ phba->bg_reftag_err_cnt++;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9056 BLKGRD: Ref Tag error in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+ }
+
+ if (lpfc_bgs_get_apptag_err(bgstat)) {
+ ret = 1;
+
+ scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x10, 0x2);
+ cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 |
+ SAM_STAT_CHECK_CONDITION;
+
+ phba->bg_apptag_err_cnt++;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9061 BLKGRD: App Tag error in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+ }
+
+ if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
+ /*
+ * setup sense data descriptor 0 per SPC-4 as an information
+ * field, and put the failing LBA in it.
+ * This code assumes there was also a guard/app/ref tag error
+ * indication.
+ */
+ cmd->sense_buffer[7] = 0xc; /* Additional sense length */
+ cmd->sense_buffer[8] = 0; /* Information descriptor type */
+ cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
+ cmd->sense_buffer[10] = 0x80; /* Validity bit */
+
+ /* bghm is a "on the wire" FC frame based count */
+ switch (scsi_get_prot_op(cmd)) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ bghm /= cmd->device->sector_size;
+ break;
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ bghm /= (cmd->device->sector_size +
+ sizeof(struct scsi_dif_tuple));
+ break;
+ }
+
+ failing_sector = scsi_get_lba(cmd);
+ failing_sector += bghm;
+
+ /* Descriptor Information */
+ put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
+ }
+
+ if (!ret) {
+ /* No error was reported - problem in FW? */
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
+ "9057 BLKGRD: Unknown error in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+
+ /* Calcuate what type of error it was */
+ lpfc_calc_bg_err(phba, lpfc_cmd);
+ }
+out:
+ return ret;
+}
+
+/**
+ * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be mapped.
+ *
+ * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
+ * field of @lpfc_cmd for device with SLI-4 interface spec.
+ *
+ * Return codes:
+ * 2 - Error - Do not retry
+ * 1 - Error - Retry
+ * 0 - Success
+ **/
+static int
+lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
+ struct scatterlist *sgel = NULL;
+ struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
+ struct sli4_sge *first_data_sgl;
+ IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
+ dma_addr_t physaddr;
+ uint32_t num_bde = 0;
+ uint32_t dma_len;
+ uint32_t dma_offset = 0;
+ int nseg, i, j;
+ struct ulp_bde64 *bde;
+ bool lsp_just_set = false;
+ struct sli4_hybrid_sgl *sgl_xtra = NULL;
+
+ /*
+ * There are three possibilities here - use scatter-gather segment, use
+ * the single mapping, or neither. Start the lpfc command prep by
+ * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
+ * data bde entry.
+ */
+ if (scsi_sg_count(scsi_cmnd)) {
+ /*
+ * The driver stores the segment count returned from pci_map_sg
+ * because this a count of dma-mappings used to map the use_sg
+ * pages. They are not guaranteed to be the same for those
+ * architectures that implement an IOMMU.
+ */
+
+ nseg = scsi_dma_map(scsi_cmnd);
+ if (unlikely(nseg <= 0))
+ return 1;
+ sgl += 1;
+ /* clear the last flag in the fcp_rsp map entry */
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl += 1;
+ first_data_sgl = sgl;
+ lpfc_cmd->seg_cnt = nseg;
+ if (!phba->cfg_xpsgl &&
+ lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
+ " %s: Too many sg segments from "
+ "dma_map_sg. Config %d, seg_cnt %d\n",
+ __func__, phba->cfg_sg_seg_cnt,
+ lpfc_cmd->seg_cnt);
+ WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
+ lpfc_cmd->seg_cnt = 0;
+ scsi_dma_unmap(scsi_cmnd);
+ return 2;
+ }
+
+ /*
+ * The driver established a maximum scatter-gather segment count
+ * during probe that limits the number of sg elements in any
+ * single scsi command. Just run through the seg_cnt and format
+ * the sge's.
+ * When using SLI-3 the driver will try to fit all the BDEs into
+ * the IOCB. If it can't then the BDEs get added to a BPL as it
+ * does for SLI-2 mode.
+ */
+
+ /* for tracking segment boundaries */
+ sgel = scsi_sglist(scsi_cmnd);
+ j = 2;
+ for (i = 0; i < nseg; i++) {
+ sgl->word2 = 0;
+ if ((num_bde + 1) == nseg) {
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_DATA);
+ } else {
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+
+ /* do we need to expand the segment */
+ if (!lsp_just_set &&
+ !((j + 1) % phba->border_sge_num) &&
+ ((nseg - 1) != i)) {
+ /* set LSP type */
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_LSP);
+
+ sgl_xtra = lpfc_get_sgl_per_hdwq(
+ phba, lpfc_cmd);
+
+ if (unlikely(!sgl_xtra)) {
+ lpfc_cmd->seg_cnt = 0;
+ scsi_dma_unmap(scsi_cmnd);
+ return 1;
+ }
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(
+ sgl_xtra->dma_phys_sgl));
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(
+ sgl_xtra->dma_phys_sgl));
+
+ } else {
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_DATA);
+ }
+ }
+
+ if (!(bf_get(lpfc_sli4_sge_type, sgl) &
+ LPFC_SGE_TYPE_LSP)) {
+ if ((nseg - 1) == i)
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+
+ physaddr = sg_dma_address(sgel);
+ dma_len = sg_dma_len(sgel);
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(
+ physaddr));
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(
+ physaddr));
+
+ bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(dma_len);
+
+ dma_offset += dma_len;
+ sgel = sg_next(sgel);
+
+ sgl++;
+ lsp_just_set = false;
+
+ } else {
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(
+ phba->cfg_sg_dma_buf_size);
+
+ sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
+ i = i - 1;
+
+ lsp_just_set = true;
+ }
+
+ j++;
+ }
+ /*
+ * Setup the first Payload BDE. For FCoE we just key off
+ * Performance Hints, for FC we use lpfc_enable_pbde.
+ * We populate words 13-15 of IOCB/WQE.
+ */
+ if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
+ phba->cfg_enable_pbde) {
+ bde = (struct ulp_bde64 *)
+ &(iocb_cmd->unsli3.sli3Words[5]);
+ bde->addrLow = first_data_sgl->addr_lo;
+ bde->addrHigh = first_data_sgl->addr_hi;
+ bde->tus.f.bdeSize =
+ le32_to_cpu(first_data_sgl->sge_len);
+ bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ bde->tus.w = cpu_to_le32(bde->tus.w);
+ }
+ } else {
+ sgl += 1;
+ /* clear the last flag in the fcp_rsp map entry */
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+
+ if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
+ phba->cfg_enable_pbde) {
+ bde = (struct ulp_bde64 *)
+ &(iocb_cmd->unsli3.sli3Words[5]);
+ memset(bde, 0, (sizeof(uint32_t) * 3));
+ }
+ }
+
+ /*
+ * Finish initializing those IOCB fields that are dependent on the
+ * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
+ * explicitly reinitialized.
+ * all iocb memory resources are reused.
+ */
+ fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
+
+ /*
+ * Due to difference in data length between DIF/non-DIF paths,
+ * we need to set word 4 of IOCB here
+ */
+ iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
+
+ /*
+ * If the OAS driver feature is enabled and the lun is enabled for
+ * OAS, set the oas iocb related flags.
+ */
+ if ((phba->cfg_fof) && ((struct lpfc_device_data *)
+ scsi_cmnd->device->hostdata)->oas_enabled) {
+ lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
+ lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *)
+ scsi_cmnd->device->hostdata)->priority;
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be mapped.
+ *
+ * This is the protection/DIF aware version of
+ * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
+ * two functions eventually, but for now, it's here
+ * Return codes:
+ * 2 - Error - Do not retry
+ * 1 - Error - Retry
+ * 0 - Success
+ **/
+static int
+lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
+ struct lpfc_io_buf *lpfc_cmd)
+{
+ struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
+ struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl);
+ IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
+ uint32_t num_sge = 0;
+ int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
+ int prot_group_type = 0;
+ int fcpdl;
+ int ret = 1;
+ struct lpfc_vport *vport = phba->pport;
+
+ /*
+ * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
+ * fcp_rsp regions to the first data sge entry
+ */
+ if (scsi_sg_count(scsi_cmnd)) {
+ /*
+ * The driver stores the segment count returned from pci_map_sg
+ * because this a count of dma-mappings used to map the use_sg
+ * pages. They are not guaranteed to be the same for those
+ * architectures that implement an IOMMU.
+ */
+ datasegcnt = dma_map_sg(&phba->pcidev->dev,
+ scsi_sglist(scsi_cmnd),
+ scsi_sg_count(scsi_cmnd), datadir);
+ if (unlikely(!datasegcnt))
+ return 1;
+
+ sgl += 1;
+ /* clear the last flag in the fcp_rsp map entry */
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+
+ sgl += 1;
+ lpfc_cmd->seg_cnt = datasegcnt;
+
+ /* First check if data segment count from SCSI Layer is good */
+ if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt &&
+ !phba->cfg_xpsgl) {
+ WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
+ ret = 2;
+ goto err;
+ }
+
+ prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
+
+ switch (prot_group_type) {
+ case LPFC_PG_TYPE_NO_DIF:
+ /* Here we need to add a DISEED to the count */
+ if (((lpfc_cmd->seg_cnt + 1) >
+ phba->cfg_total_seg_cnt) &&
+ !phba->cfg_xpsgl) {
+ ret = 2;
+ goto err;
+ }
+
+ num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
+ datasegcnt, lpfc_cmd);
+
+ /* we should have 2 or more entries in buffer list */
+ if (num_sge < 2) {
+ ret = 2;
+ goto err;
+ }
+ break;
+
+ case LPFC_PG_TYPE_DIF_BUF:
+ /*
+ * This type indicates that protection buffers are
+ * passed to the driver, so that needs to be prepared
+ * for DMA
+ */
+ protsegcnt = dma_map_sg(&phba->pcidev->dev,
+ scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd), datadir);
+ if (unlikely(!protsegcnt)) {
+ scsi_dma_unmap(scsi_cmnd);
+ return 1;
+ }
+
+ lpfc_cmd->prot_seg_cnt = protsegcnt;
+ /*
+ * There is a minimun of 3 SGEs used for every
+ * protection data segment.
+ */
+ if (((lpfc_cmd->prot_seg_cnt * 3) >
+ (phba->cfg_total_seg_cnt - 2)) &&
+ !phba->cfg_xpsgl) {
+ ret = 2;
+ goto err;
+ }
+
+ num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
+ datasegcnt, protsegcnt, lpfc_cmd);
+
+ /* we should have 3 or more entries in buffer list */
+ if (num_sge < 3 ||
+ (num_sge > phba->cfg_total_seg_cnt &&
+ !phba->cfg_xpsgl)) {
+ ret = 2;
+ goto err;
+ }
+ break;
+
+ case LPFC_PG_TYPE_INVALID:
+ default:
+ scsi_dma_unmap(scsi_cmnd);
+ lpfc_cmd->seg_cnt = 0;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9083 Unexpected protection group %i\n",
+ prot_group_type);
+ return 2;
+ }
+ }
+
+ switch (scsi_get_prot_op(scsi_cmnd)) {
+ case SCSI_PROT_WRITE_STRIP:
+ case SCSI_PROT_READ_STRIP:
+ lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
+ break;
+ case SCSI_PROT_WRITE_INSERT:
+ case SCSI_PROT_READ_INSERT:
+ lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
+ break;
+ case SCSI_PROT_WRITE_PASS:
+ case SCSI_PROT_READ_PASS:
+ lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
+ break;
+ }
+
+ fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
+ fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
+
+ /*
+ * Due to difference in data length between DIF/non-DIF paths,
+ * we need to set word 4 of IOCB here
+ */
+ iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
+
+ /*
+ * For First burst, we may need to adjust the initial transfer
+ * length for DIF
+ */
+ if (iocb_cmd->un.fcpi.fcpi_XRdy &&
+ (fcpdl < vport->cfg_first_burst_size))
+ iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
+
+ /*
+ * If the OAS driver feature is enabled and the lun is enabled for
+ * OAS, set the oas iocb related flags.
+ */
+ if ((phba->cfg_fof) && ((struct lpfc_device_data *)
+ scsi_cmnd->device->hostdata)->oas_enabled)
+ lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
+
+ return 0;
+err:
+ if (lpfc_cmd->seg_cnt)
+ scsi_dma_unmap(scsi_cmnd);
+ if (lpfc_cmd->prot_seg_cnt)
+ dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ scsi_cmnd->sc_data_direction);
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9084 Cannot setup S/G List for HBA"
+ "IO segs %d/%d SGL %d SCSI %d: %d %d\n",
+ lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
+ phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
+ prot_group_type, num_sge);
+
+ lpfc_cmd->seg_cnt = 0;
+ lpfc_cmd->prot_seg_cnt = 0;
+ return ret;
+}
+
+/**
+ * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be mapped.
+ *
+ * This routine wraps the actual DMA mapping function pointer from the
+ * lpfc_hba struct.
+ *
+ * Return codes:
+ * 1 - Error
+ * 0 - Success
+ **/
+static inline int
+lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
+}
+
+/**
+ * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
+ * using BlockGuard.
+ * @phba: The Hba for which this call is being executed.
+ * @lpfc_cmd: The scsi buffer which is going to be mapped.
+ *
+ * This routine wraps the actual DMA mapping function pointer from the
+ * lpfc_hba struct.
+ *
+ * Return codes:
+ * 1 - Error
+ * 0 - Success
+ **/
+static inline int
+lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
+}
+
+/**
+ * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
+ * @phba: Pointer to hba context object.
+ * @vport: Pointer to vport object.
+ * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
+ * @rsp_iocb: Pointer to response iocb object which reported error.
+ *
+ * This function posts an event when there is a SCSI command reporting
+ * error from the scsi device.
+ **/
+static void
+lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
+ struct lpfc_io_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
+ struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
+ struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
+ uint32_t resp_info = fcprsp->rspStatus2;
+ uint32_t scsi_status = fcprsp->rspStatus3;
+ uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
+ struct lpfc_fast_path_event *fast_path_evt = NULL;
+ struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
+ unsigned long flags;
+
+ if (!pnode || !NLP_CHK_NODE_ACT(pnode))
+ return;
+
+ /* If there is queuefull or busy condition send a scsi event */
+ if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
+ (cmnd->result == SAM_STAT_BUSY)) {
+ fast_path_evt = lpfc_alloc_fast_evt(phba);
+ if (!fast_path_evt)
+ return;
+ fast_path_evt->un.scsi_evt.event_type =
+ FC_REG_SCSI_EVENT;
+ fast_path_evt->un.scsi_evt.subcategory =
+ (cmnd->result == SAM_STAT_TASK_SET_FULL) ?
+ LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
+ fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
+ memcpy(&fast_path_evt->un.scsi_evt.wwpn,
+ &pnode->nlp_portname, sizeof(struct lpfc_name));
+ memcpy(&fast_path_evt->un.scsi_evt.wwnn,
+ &pnode->nlp_nodename, sizeof(struct lpfc_name));
+ } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
+ ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
+ fast_path_evt = lpfc_alloc_fast_evt(phba);
+ if (!fast_path_evt)
+ return;
+ fast_path_evt->un.check_cond_evt.scsi_event.event_type =
+ FC_REG_SCSI_EVENT;
+ fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
+ LPFC_EVENT_CHECK_COND;
+ fast_path_evt->un.check_cond_evt.scsi_event.lun =
+ cmnd->device->lun;
+ memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
+ &pnode->nlp_portname, sizeof(struct lpfc_name));
+ memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
+ &pnode->nlp_nodename, sizeof(struct lpfc_name));
+ fast_path_evt->un.check_cond_evt.sense_key =
+ cmnd->sense_buffer[2] & 0xf;
+ fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
+ fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
+ } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
+ fcpi_parm &&
+ ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
+ ((scsi_status == SAM_STAT_GOOD) &&
+ !(resp_info & (RESID_UNDER | RESID_OVER))))) {
+ /*
+ * If status is good or resid does not match with fcp_param and
+ * there is valid fcpi_parm, then there is a read_check error
+ */
+ fast_path_evt = lpfc_alloc_fast_evt(phba);
+ if (!fast_path_evt)
+ return;
+ fast_path_evt->un.read_check_error.header.event_type =
+ FC_REG_FABRIC_EVENT;
+ fast_path_evt->un.read_check_error.header.subcategory =
+ LPFC_EVENT_FCPRDCHKERR;
+ memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
+ &pnode->nlp_portname, sizeof(struct lpfc_name));
+ memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
+ &pnode->nlp_nodename, sizeof(struct lpfc_name));
+ fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
+ fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
+ fast_path_evt->un.read_check_error.fcpiparam =
+ fcpi_parm;
+ } else
+ return;
+
+ fast_path_evt->vport = vport;
+ spin_lock_irqsave(&phba->hbalock, flags);
+ list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ lpfc_worker_wake_up(phba);
+ return;
+}
+
+/**
+ * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
+ * @phba: The HBA for which this call is being executed.
+ * @psb: The scsi buffer which is going to be un-mapped.
+ *
+ * This routine does DMA un-mapping of scatter gather list of scsi command
+ * field of @lpfc_cmd for device with SLI-3 interface spec.
+ **/
+static void
+lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
+{
+ /*
+ * There are only two special cases to consider. (1) the scsi command
+ * requested scatter-gather usage or (2) the scsi command allocated
+ * a request buffer, but did not request use_sg. There is a third
+ * case, but it does not require resource deallocation.
+ */
+ if (psb->seg_cnt > 0)
+ scsi_dma_unmap(psb->pCmd);
+ if (psb->prot_seg_cnt > 0)
+ dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
+ scsi_prot_sg_count(psb->pCmd),
+ psb->pCmd->sc_data_direction);
+}
+
+/**
+ * lpfc_handler_fcp_err - FCP response handler
+ * @vport: The virtual port for which this call is being executed.
+ * @lpfc_cmd: Pointer to lpfc_io_buf data structure.
+ * @rsp_iocb: The response IOCB which contains FCP error.
+ *
+ * This routine is called to process response IOCB with status field
+ * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
+ * based upon SCSI and FCP error.
+ **/
+static void
+lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
+ struct lpfc_iocbq *rsp_iocb)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
+ struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
+ struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
+ uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
+ uint32_t resp_info = fcprsp->rspStatus2;
+ uint32_t scsi_status = fcprsp->rspStatus3;
+ uint32_t *lp;
+ uint32_t host_status = DID_OK;
+ uint32_t rsplen = 0;
+ uint32_t fcpDl;
+ uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
+
+
+ /*
+ * If this is a task management command, there is no
+ * scsi packet associated with this lpfc_cmd. The driver
+ * consumes it.
+ */
+ if (fcpcmd->fcpCntl2) {
+ scsi_status = 0;
+ goto out;
+ }
+
+ if (resp_info & RSP_LEN_VALID) {
+ rsplen = be32_to_cpu(fcprsp->rspRspLen);
+ if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "2719 Invalid response length: "
+ "tgt x%x lun x%llx cmnd x%x rsplen x%x\n",
+ cmnd->device->id,
+ cmnd->device->lun, cmnd->cmnd[0],
+ rsplen);
+ host_status = DID_ERROR;
+ goto out;
+ }
+ if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "2757 Protocol failure detected during "
+ "processing of FCP I/O op: "
+ "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n",
+ cmnd->device->id,
+ cmnd->device->lun, cmnd->cmnd[0],
+ fcprsp->rspInfo3);
+ host_status = DID_ERROR;
+ goto out;
+ }
+ }
+
+ if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
+ uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
+ if (snslen > SCSI_SENSE_BUFFERSIZE)
+ snslen = SCSI_SENSE_BUFFERSIZE;
+
+ if (resp_info & RSP_LEN_VALID)
+ rsplen = be32_to_cpu(fcprsp->rspRspLen);
+ memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
+ }
+ lp = (uint32_t *)cmnd->sense_buffer;
+
+ /* special handling for under run conditions */
+ if (!scsi_status && (resp_info & RESID_UNDER)) {
+ /* don't log under runs if fcp set... */
+ if (vport->cfg_log_verbose & LOG_FCP)
+ logit = LOG_FCP_ERROR;
+ /* unless operator says so */
+ if (vport->cfg_log_verbose & LOG_FCP_UNDER)
+ logit = LOG_FCP_UNDER;
+ }
+
+ lpfc_printf_vlog(vport, KERN_WARNING, logit,
+ "9024 FCP command x%x failed: x%x SNS x%x x%x "
+ "Data: x%x x%x x%x x%x x%x\n",
+ cmnd->cmnd[0], scsi_status,
+ be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
+ be32_to_cpu(fcprsp->rspResId),
+ be32_to_cpu(fcprsp->rspSnsLen),
+ be32_to_cpu(fcprsp->rspRspLen),
+ fcprsp->rspInfo3);
+
+ scsi_set_resid(cmnd, 0);
+ fcpDl = be32_to_cpu(fcpcmd->fcpDl);
+ if (resp_info & RESID_UNDER) {
+ scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
+ "9025 FCP Underrun, expected %d, "
+ "residual %d Data: x%x x%x x%x\n",
+ fcpDl,
+ scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
+ cmnd->underflow);
+
+ /*
+ * If there is an under run, check if under run reported by
+ * storage array is same as the under run reported by HBA.
+ * If this is not same, there is a dropped frame.
+ */
+ if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) {
+ lpfc_printf_vlog(vport, KERN_WARNING,
+ LOG_FCP | LOG_FCP_ERROR,
+ "9026 FCP Read Check Error "
+ "and Underrun Data: x%x x%x x%x x%x\n",
+ fcpDl,
+ scsi_get_resid(cmnd), fcpi_parm,
+ cmnd->cmnd[0]);
+ scsi_set_resid(cmnd, scsi_bufflen(cmnd));
+ host_status = DID_ERROR;
+ }
+ /*
+ * The cmnd->underflow is the minimum number of bytes that must
+ * be transferred for this command. Provided a sense condition
+ * is not present, make sure the actual amount transferred is at
+ * least the underflow value or fail.
+ */
+ if (!(resp_info & SNS_LEN_VALID) &&
+ (scsi_status == SAM_STAT_GOOD) &&
+ (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
+ < cmnd->underflow)) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "9027 FCP command x%x residual "
+ "underrun converted to error "
+ "Data: x%x x%x x%x\n",
+ cmnd->cmnd[0], scsi_bufflen(cmnd),
+ scsi_get_resid(cmnd), cmnd->underflow);
+ host_status = DID_ERROR;
+ }
+ } else if (resp_info & RESID_OVER) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "9028 FCP command x%x residual overrun error. "
+ "Data: x%x x%x\n", cmnd->cmnd[0],
+ scsi_bufflen(cmnd), scsi_get_resid(cmnd));
+ host_status = DID_ERROR;
+
+ /*
+ * Check SLI validation that all the transfer was actually done
+ * (fcpi_parm should be zero). Apply check only to reads.
+ */
+ } else if (fcpi_parm) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
+ "9029 FCP %s Check Error xri x%x Data: "
+ "x%x x%x x%x x%x x%x\n",
+ ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ?
+ "Read" : "Write"),
+ ((phba->sli_rev == LPFC_SLI_REV4) ?
+ lpfc_cmd->cur_iocbq.sli4_xritag :
+ rsp_iocb->iocb.ulpContext),
+ fcpDl, be32_to_cpu(fcprsp->rspResId),
+ fcpi_parm, cmnd->cmnd[0], scsi_status);
+
+ /* There is some issue with the LPe12000 that causes it
+ * to miscalculate the fcpi_parm and falsely trip this
+ * recovery logic. Detect this case and don't error when true.
+ */
+ if (fcpi_parm > fcpDl)
+ goto out;
+
+ switch (scsi_status) {
+ case SAM_STAT_GOOD:
+ case SAM_STAT_CHECK_CONDITION:
+ /* Fabric dropped a data frame. Fail any successful
+ * command in which we detected dropped frames.
+ * A status of good or some check conditions could
+ * be considered a successful command.
+ */
+ host_status = DID_ERROR;
+ break;
+ }
+ scsi_set_resid(cmnd, scsi_bufflen(cmnd));
+ }
+
+ out:
+ cmnd->result = host_status << 16 | scsi_status;
+ lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
+}
+
+/**
+ * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
+ * @phba: The Hba for which this call is being executed.
+ * @pIocbIn: The command IOCBQ for the scsi cmnd.
+ * @pIocbOut: The response IOCBQ for the scsi cmnd.
+ *
+ * This routine assigns scsi command result by looking into response IOCB
+ * status field appropriately. This routine handles QUEUE FULL condition as
+ * well by ramping down device queue depth.
+ **/
+static void
+lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
+ struct lpfc_iocbq *pIocbOut)
+{
+ struct lpfc_io_buf *lpfc_cmd =
+ (struct lpfc_io_buf *) pIocbIn->context1;
+ struct lpfc_vport *vport = pIocbIn->vport;
+ struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
+ struct lpfc_nodelist *pnode = rdata->pnode;
+ struct scsi_cmnd *cmd;
+ unsigned long flags;
+ struct lpfc_fast_path_event *fast_path_evt;
+ struct Scsi_Host *shost;
+ int idx;
+ uint32_t logit = LOG_FCP;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ int cpu;
+#endif
+
+ /* Guard against abort handler being called at same time */
+ spin_lock(&lpfc_cmd->buf_lock);
+
+ /* Sanity check on return of outstanding command */
+ cmd = lpfc_cmd->pCmd;
+ if (!cmd) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
+ "2621 IO completion: Not an active IO\n");
+ spin_unlock(&lpfc_cmd->buf_lock);
+ return;
+ }
+
+ idx = lpfc_cmd->cur_iocbq.hba_wqidx;
+ if (phba->sli4_hba.hdwq)
+ phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++;
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (phba->cpucheck_on & LPFC_CHECK_SCSI_IO) {
+ cpu = raw_smp_processor_id();
+ if (cpu < LPFC_CHECK_CPU_CNT && phba->sli4_hba.hdwq)
+ phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++;
+ }
+#endif
+ shost = cmd->device->host;
+
+ lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
+ lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
+ /* pick up SLI4 exhange busy status from HBA */
+ if (pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY)
+ lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
+ else
+ lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (lpfc_cmd->prot_data_type) {
+ struct scsi_dif_tuple *src = NULL;
+
+ src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
+ /*
+ * Used to restore any changes to protection
+ * data for error injection.
+ */
+ switch (lpfc_cmd->prot_data_type) {
+ case LPFC_INJERR_REFTAG:
+ src->ref_tag =
+ lpfc_cmd->prot_data;
+ break;
+ case LPFC_INJERR_APPTAG:
+ src->app_tag =
+ (uint16_t)lpfc_cmd->prot_data;
+ break;
+ case LPFC_INJERR_GUARD:
+ src->guard_tag =
+ (uint16_t)lpfc_cmd->prot_data;
+ break;
+ default:
+ break;
+ }
+
+ lpfc_cmd->prot_data = 0;
+ lpfc_cmd->prot_data_type = 0;
+ lpfc_cmd->prot_data_segment = NULL;
+ }
+#endif
+
+ if (lpfc_cmd->status) {
+ if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
+ (lpfc_cmd->result & IOERR_DRVR_MASK))
+ lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
+ else if (lpfc_cmd->status >= IOSTAT_CNT)
+ lpfc_cmd->status = IOSTAT_DEFAULT;
+ if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
+ !lpfc_cmd->fcp_rsp->rspStatus3 &&
+ (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
+ !(vport->cfg_log_verbose & LOG_FCP_UNDER))
+ logit = 0;
+ else
+ logit = LOG_FCP | LOG_FCP_UNDER;
+ lpfc_printf_vlog(vport, KERN_WARNING, logit,
+ "9030 FCP cmd x%x failed <%d/%lld> "
+ "status: x%x result: x%x "
+ "sid: x%x did: x%x oxid: x%x "
+ "Data: x%x x%x\n",
+ cmd->cmnd[0],
+ cmd->device ? cmd->device->id : 0xffff,
+ cmd->device ? cmd->device->lun : 0xffff,
+ lpfc_cmd->status, lpfc_cmd->result,
+ vport->fc_myDID,
+ (pnode) ? pnode->nlp_DID : 0,
+ phba->sli_rev == LPFC_SLI_REV4 ?
+ lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
+ pIocbOut->iocb.ulpContext,
+ lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
+
+ switch (lpfc_cmd->status) {
+ case IOSTAT_FCP_RSP_ERROR:
+ /* Call FCP RSP handler to determine result */
+ lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
+ break;
+ case IOSTAT_NPORT_BSY:
+ case IOSTAT_FABRIC_BSY:
+ cmd->result = DID_TRANSPORT_DISRUPTED << 16;
+ fast_path_evt = lpfc_alloc_fast_evt(phba);
+ if (!fast_path_evt)
+ break;
+ fast_path_evt->un.fabric_evt.event_type =
+ FC_REG_FABRIC_EVENT;
+ fast_path_evt->un.fabric_evt.subcategory =
+ (lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
+ LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
+ if (pnode && NLP_CHK_NODE_ACT(pnode)) {
+ memcpy(&fast_path_evt->un.fabric_evt.wwpn,
+ &pnode->nlp_portname,
+ sizeof(struct lpfc_name));
+ memcpy(&fast_path_evt->un.fabric_evt.wwnn,
+ &pnode->nlp_nodename,
+ sizeof(struct lpfc_name));
+ }
+ fast_path_evt->vport = vport;
+ fast_path_evt->work_evt.evt =
+ LPFC_EVT_FASTPATH_MGMT_EVT;
+ spin_lock_irqsave(&phba->hbalock, flags);
+ list_add_tail(&fast_path_evt->work_evt.evt_listp,
+ &phba->work_list);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ lpfc_worker_wake_up(phba);
+ break;
+ case IOSTAT_LOCAL_REJECT:
+ case IOSTAT_REMOTE_STOP:
+ if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
+ lpfc_cmd->result ==
+ IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
+ lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
+ lpfc_cmd->result ==
+ IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
+ cmd->result = DID_NO_CONNECT << 16;
+ break;
+ }
+ if (lpfc_cmd->result == IOERR_INVALID_RPI ||
+ lpfc_cmd->result == IOERR_NO_RESOURCES ||
+ lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
+ lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
+ cmd->result = DID_REQUEUE << 16;
+ break;
+ }
+ if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
+ lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
+ pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
+ if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
+ /*
+ * This is a response for a BG enabled
+ * cmd. Parse BG error
+ */
+ lpfc_parse_bg_err(phba, lpfc_cmd,
+ pIocbOut);
+ break;
+ } else {
+ lpfc_printf_vlog(vport, KERN_WARNING,
+ LOG_BG,
+ "9031 non-zero BGSTAT "
+ "on unprotected cmd\n");
+ }
+ }
+ if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
+ && (phba->sli_rev == LPFC_SLI_REV4)
+ && (pnode && NLP_CHK_NODE_ACT(pnode))) {
+ /* This IO was aborted by the target, we don't
+ * know the rxid and because we did not send the
+ * ABTS we cannot generate and RRQ.
+ */
+ lpfc_set_rrq_active(phba, pnode,
+ lpfc_cmd->cur_iocbq.sli4_lxritag,
+ 0, 0);
+ }
+ /* fall through */
+ default:
+ cmd->result = DID_ERROR << 16;
+ break;
+ }
+
+ if (!pnode || !NLP_CHK_NODE_ACT(pnode)
+ || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
+ cmd->result = DID_TRANSPORT_DISRUPTED << 16 |
+ SAM_STAT_BUSY;
+ } else
+ cmd->result = DID_OK << 16;
+
+ if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
+ uint32_t *lp = (uint32_t *)cmd->sense_buffer;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0710 Iodone <%d/%llu> cmd x%px, error "
+ "x%x SNS x%x x%x Data: x%x x%x\n",
+ cmd->device->id, cmd->device->lun, cmd,
+ cmd->result, *lp, *(lp + 3), cmd->retries,
+ scsi_get_resid(cmd));
+ }
+
+ lpfc_update_stats(phba, lpfc_cmd);
+ if (vport->cfg_max_scsicmpl_time &&
+ time_after(jiffies, lpfc_cmd->start_time +
+ msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
+ spin_lock_irqsave(shost->host_lock, flags);
+ if (pnode && NLP_CHK_NODE_ACT(pnode)) {
+ if (pnode->cmd_qdepth >
+ atomic_read(&pnode->cmd_pending) &&
+ (atomic_read(&pnode->cmd_pending) >
+ LPFC_MIN_TGT_QDEPTH) &&
+ ((cmd->cmnd[0] == READ_10) ||
+ (cmd->cmnd[0] == WRITE_10)))
+ pnode->cmd_qdepth =
+ atomic_read(&pnode->cmd_pending);
+
+ pnode->last_change_time = jiffies;
+ }
+ spin_unlock_irqrestore(shost->host_lock, flags);
+ }
+ lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
+
+ lpfc_cmd->pCmd = NULL;
+ spin_unlock(&lpfc_cmd->buf_lock);
+
+ /* The sdev is not guaranteed to be valid post scsi_done upcall. */
+ cmd->scsi_done(cmd);
+
+ /*
+ * If there is an abort thread waiting for command completion
+ * wake up the thread.
+ */
+ spin_lock(&lpfc_cmd->buf_lock);
+ lpfc_cmd->cur_iocbq.iocb_flag &= ~LPFC_DRIVER_ABORTED;
+ if (lpfc_cmd->waitq)
+ wake_up(lpfc_cmd->waitq);
+ spin_unlock(&lpfc_cmd->buf_lock);
+
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+}
+
+/**
+ * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
+ * @data: A pointer to the immediate command data portion of the IOCB.
+ * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
+ *
+ * The routine copies the entire FCP command from @fcp_cmnd to @data while
+ * byte swapping the data to big endian format for transmission on the wire.
+ **/
+static void
+lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
+{
+ int i, j;
+ for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
+ i += sizeof(uint32_t), j++) {
+ ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
+ }
+}
+
+/**
+ * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
+ * @vport: The virtual port for which this call is being executed.
+ * @lpfc_cmd: The scsi command which needs to send.
+ * @pnode: Pointer to lpfc_nodelist.
+ *
+ * This routine initializes fcp_cmnd and iocb data structure from scsi command
+ * to transfer for device with SLI3 interface spec.
+ **/
+static void
+lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
+ struct lpfc_nodelist *pnode)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
+ struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
+ struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
+ struct lpfc_sli4_hdw_queue *hdwq = NULL;
+ int datadir = scsi_cmnd->sc_data_direction;
+ int idx;
+ uint8_t *ptr;
+ bool sli4;
+ uint32_t fcpdl;
+
+ if (!pnode || !NLP_CHK_NODE_ACT(pnode))
+ return;
+
+ lpfc_cmd->fcp_rsp->rspSnsLen = 0;
+ /* clear task management bits */
+ lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
+
+ int_to_scsilun(lpfc_cmd->pCmd->device->lun,
+ &lpfc_cmd->fcp_cmnd->fcp_lun);
+
+ ptr = &fcp_cmnd->fcpCdb[0];
+ memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
+ if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
+ ptr += scsi_cmnd->cmd_len;
+ memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
+ }
+
+ fcp_cmnd->fcpCntl1 = SIMPLE_Q;
+
+ sli4 = (phba->sli_rev == LPFC_SLI_REV4);
+ piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
+ idx = lpfc_cmd->hdwq_no;
+ if (phba->sli4_hba.hdwq)
+ hdwq = &phba->sli4_hba.hdwq[idx];
+
+ /*
+ * There are three possibilities here - use scatter-gather segment, use
+ * the single mapping, or neither. Start the lpfc command prep by
+ * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
+ * data bde entry.
+ */
+ if (scsi_sg_count(scsi_cmnd)) {
+ if (datadir == DMA_TO_DEVICE) {
+ iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
+ iocb_cmd->ulpPU = PARM_READ_CHECK;
+ if (vport->cfg_first_burst_size &&
+ (pnode->nlp_flag & NLP_FIRSTBURST)) {
+ fcpdl = scsi_bufflen(scsi_cmnd);
+ if (fcpdl < vport->cfg_first_burst_size)
+ piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl;
+ else
+ piocbq->iocb.un.fcpi.fcpi_XRdy =
+ vport->cfg_first_burst_size;
+ }
+ fcp_cmnd->fcpCntl3 = WRITE_DATA;
+ if (hdwq)
+ hdwq->scsi_cstat.output_requests++;
+ } else {
+ iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
+ iocb_cmd->ulpPU = PARM_READ_CHECK;
+ fcp_cmnd->fcpCntl3 = READ_DATA;
+ if (hdwq)
+ hdwq->scsi_cstat.input_requests++;
+ }
+ } else {
+ iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
+ iocb_cmd->un.fcpi.fcpi_parm = 0;
+ iocb_cmd->ulpPU = 0;
+ fcp_cmnd->fcpCntl3 = 0;
+ if (hdwq)
+ hdwq->scsi_cstat.control_requests++;
+ }
+ if (phba->sli_rev == 3 &&
+ !(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
+ lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
+ /*
+ * Finish initializing those IOCB fields that are independent
+ * of the scsi_cmnd request_buffer
+ */
+ piocbq->iocb.ulpContext = pnode->nlp_rpi;
+ if (sli4)
+ piocbq->iocb.ulpContext =
+ phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
+ if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
+ piocbq->iocb.ulpFCP2Rcvy = 1;
+ else
+ piocbq->iocb.ulpFCP2Rcvy = 0;
+
+ piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
+ piocbq->context1 = lpfc_cmd;
+ piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
+ piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
+ piocbq->vport = vport;
+}
+
+/**
+ * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit
+ * @vport: The virtual port for which this call is being executed.
+ * @lpfc_cmd: Pointer to lpfc_io_buf data structure.
+ * @lun: Logical unit number.
+ * @task_mgmt_cmd: SCSI task management command.
+ *
+ * This routine creates FCP information unit corresponding to @task_mgmt_cmd
+ * for device with SLI-3 interface spec.
+ *
+ * Return codes:
+ * 0 - Error
+ * 1 - Success
+ **/
+static int
+lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
+ struct lpfc_io_buf *lpfc_cmd,
+ uint64_t lun,
+ uint8_t task_mgmt_cmd)
+{
+ struct lpfc_iocbq *piocbq;
+ IOCB_t *piocb;
+ struct fcp_cmnd *fcp_cmnd;
+ struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
+ struct lpfc_nodelist *ndlp = rdata->pnode;
+
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+ ndlp->nlp_state != NLP_STE_MAPPED_NODE)
+ return 0;
+
+ piocbq = &(lpfc_cmd->cur_iocbq);
+ piocbq->vport = vport;
+
+ piocb = &piocbq->iocb;
+
+ fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ /* Clear out any old data in the FCP command area */
+ memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
+ int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
+ fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
+ if (vport->phba->sli_rev == 3 &&
+ !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
+ lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
+ piocb->ulpCommand = CMD_FCP_ICMND64_CR;
+ piocb->ulpContext = ndlp->nlp_rpi;
+ if (vport->phba->sli_rev == LPFC_SLI_REV4) {
+ piocb->ulpContext =
+ vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
+ }
+ piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0;
+ piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
+ piocb->ulpPU = 0;
+ piocb->un.fcpi.fcpi_parm = 0;
+
+ /* ulpTimeout is only one byte */
+ if (lpfc_cmd->timeout > 0xff) {
+ /*
+ * Do not timeout the command at the firmware level.
+ * The driver will provide the timeout mechanism.
+ */
+ piocb->ulpTimeout = 0;
+ } else
+ piocb->ulpTimeout = lpfc_cmd->timeout;
+
+ if (vport->phba->sli_rev == LPFC_SLI_REV4)
+ lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
+
+ return 1;
+}
+
+/**
+ * lpfc_scsi_api_table_setup - Set up scsi api function jump table
+ * @phba: The hba struct for which this call is being executed.
+ * @dev_grp: The HBA PCI-Device group number.
+ *
+ * This routine sets up the SCSI interface API function jump table in @phba
+ * struct.
+ * Returns: 0 - success, -ENODEV - failure.
+ **/
+int
+lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
+{
+
+ phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
+ phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
+
+ switch (dev_grp) {
+ case LPFC_PCI_DEV_LP:
+ phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
+ phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
+ phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
+ phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
+ break;
+ case LPFC_PCI_DEV_OC:
+ phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
+ phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
+ phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
+ phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "1418 Invalid HBA PCI-device group: 0x%x\n",
+ dev_grp);
+ return -ENODEV;
+ break;
+ }
+ phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
+ phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
+ return 0;
+}
+
+/**
+ * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
+ * @phba: The Hba for which this call is being executed.
+ * @cmdiocbq: Pointer to lpfc_iocbq data structure.
+ * @rspiocbq: Pointer to lpfc_iocbq data structure.
+ *
+ * This routine is IOCB completion routine for device reset and target reset
+ * routine. This routine release scsi buffer associated with lpfc_cmd.
+ **/
+static void
+lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
+ struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_iocbq *rspiocbq)
+{
+ struct lpfc_io_buf *lpfc_cmd =
+ (struct lpfc_io_buf *) cmdiocbq->context1;
+ if (lpfc_cmd)
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+ return;
+}
+
+/**
+ * lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check
+ * if issuing a pci_bus_reset is possibly unsafe
+ * @phba: lpfc_hba pointer.
+ *
+ * Description:
+ * Walks the bus_list to ensure only PCI devices with Emulex
+ * vendor id, device ids that support hot reset, and only one occurrence
+ * of function 0.
+ *
+ * Returns:
+ * -EBADSLT, detected invalid device
+ * 0, successful
+ */
+int
+lpfc_check_pci_resettable(const struct lpfc_hba *phba)
+{
+ const struct pci_dev *pdev = phba->pcidev;
+ struct pci_dev *ptr = NULL;
+ u8 counter = 0;
+
+ /* Walk the list of devices on the pci_dev's bus */
+ list_for_each_entry(ptr, &pdev->bus->devices, bus_list) {
+ /* Check for Emulex Vendor ID */
+ if (ptr->vendor != PCI_VENDOR_ID_EMULEX) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "8346 Non-Emulex vendor found: "
+ "0x%04x\n", ptr->vendor);
+ return -EBADSLT;
+ }
+
+ /* Check for valid Emulex Device ID */
+ switch (ptr->device) {
+ case PCI_DEVICE_ID_LANCER_FC:
+ case PCI_DEVICE_ID_LANCER_G6_FC:
+ case PCI_DEVICE_ID_LANCER_G7_FC:
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "8347 Invalid device found: "
+ "0x%04x\n", ptr->device);
+ return -EBADSLT;
+ }
+
+ /* Check for only one function 0 ID to ensure only one HBA on
+ * secondary bus
+ */
+ if (ptr->devfn == 0) {
+ if (++counter > 1) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "8348 More than one device on "
+ "secondary bus found\n");
+ return -EBADSLT;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_info - Info entry point of scsi_host_template data structure
+ * @host: The scsi host for which this call is being executed.
+ *
+ * This routine provides module information about hba.
+ *
+ * Reutrn code:
+ * Pointer to char - Success.
+ **/
+const char *
+lpfc_info(struct Scsi_Host *host)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ int link_speed = 0;
+ static char lpfcinfobuf[384];
+ char tmp[384] = {0};
+
+ memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf));
+ if (phba && phba->pcidev){
+ /* Model Description */
+ scnprintf(tmp, sizeof(tmp), phba->ModelDesc);
+ if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
+ sizeof(lpfcinfobuf))
+ goto buffer_done;
+
+ /* PCI Info */
+ scnprintf(tmp, sizeof(tmp),
+ " on PCI bus %02x device %02x irq %d",
+ phba->pcidev->bus->number, phba->pcidev->devfn,
+ phba->pcidev->irq);
+ if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
+ sizeof(lpfcinfobuf))
+ goto buffer_done;
+
+ /* Port Number */
+ if (phba->Port[0]) {
+ scnprintf(tmp, sizeof(tmp), " port %s", phba->Port);
+ if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
+ sizeof(lpfcinfobuf))
+ goto buffer_done;
+ }
+
+ /* Link Speed */
+ link_speed = lpfc_sli_port_speed_get(phba);
+ if (link_speed != 0) {
+ scnprintf(tmp, sizeof(tmp),
+ " Logical Link Speed: %d Mbps", link_speed);
+ if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
+ sizeof(lpfcinfobuf))
+ goto buffer_done;
+ }
+
+ /* PCI resettable */
+ if (!lpfc_check_pci_resettable(phba)) {
+ scnprintf(tmp, sizeof(tmp), " PCI resettable");
+ strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf));
+ }
+ }
+
+buffer_done:
+ return lpfcinfobuf;
+}
+
+/**
+ * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
+ * @phba: The Hba for which this call is being executed.
+ *
+ * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
+ * The default value of cfg_poll_tmo is 10 milliseconds.
+ **/
+static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
+{
+ unsigned long poll_tmo_expires =
+ (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
+
+ if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq))
+ mod_timer(&phba->fcp_poll_timer,
+ poll_tmo_expires);
+}
+
+/**
+ * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
+ * @phba: The Hba for which this call is being executed.
+ *
+ * This routine starts the fcp_poll_timer of @phba.
+ **/
+void lpfc_poll_start_timer(struct lpfc_hba * phba)
+{
+ lpfc_poll_rearm_timer(phba);
+}
+
+/**
+ * lpfc_poll_timeout - Restart polling timer
+ * @ptr: Map to lpfc_hba data structure pointer.
+ *
+ * This routine restarts fcp_poll timer, when FCP ring polling is enable
+ * and FCP Ring interrupt is disable.
+ **/
+
+void lpfc_poll_timeout(struct timer_list *t)
+{
+ struct lpfc_hba *phba = from_timer(phba, t, fcp_poll_timer);
+
+ if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT)
+ lpfc_poll_rearm_timer(phba);
+ }
+}
+
+/**
+ * lpfc_queuecommand - scsi_host_template queuecommand entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ * @done: Pointer to done routine.
+ *
+ * Driver registers this routine to scsi midlayer to submit a @cmd to process.
+ * This routine prepares an IOCB from scsi command and provides to firmware.
+ * The @done callback is invoked after driver finished processing the command.
+ *
+ * Return value :
+ * 0 - Success
+ * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
+ **/
+static int
+lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_rport_data *rdata;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_io_buf *lpfc_cmd;
+ struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
+ int err, idx;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ int cpu;
+#endif
+
+ rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
+
+ /* sanity check on references */
+ if (unlikely(!rdata) || unlikely(!rport))
+ goto out_fail_command;
+
+ err = fc_remote_port_chkready(rport);
+ if (err) {
+ cmnd->result = err;
+ goto out_fail_command;
+ }
+ ndlp = rdata->pnode;
+
+ if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
+ (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
+ " op:%02x str=%s without registering for"
+ " BlockGuard - Rejecting command\n",
+ cmnd->cmnd[0], scsi_get_prot_op(cmnd),
+ dif_op_str[scsi_get_prot_op(cmnd)]);
+ goto out_fail_command;
+ }
+
+ /*
+ * Catch race where our node has transitioned, but the
+ * transport is still transitioning.
+ */
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
+ goto out_tgt_busy;
+ if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
+ if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
+ "3377 Target Queue Full, scsi Id:%d "
+ "Qdepth:%d Pending command:%d"
+ " WWNN:%02x:%02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x, "
+ " WWPN:%02x:%02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x",
+ ndlp->nlp_sid, ndlp->cmd_qdepth,
+ atomic_read(&ndlp->cmd_pending),
+ ndlp->nlp_nodename.u.wwn[0],
+ ndlp->nlp_nodename.u.wwn[1],
+ ndlp->nlp_nodename.u.wwn[2],
+ ndlp->nlp_nodename.u.wwn[3],
+ ndlp->nlp_nodename.u.wwn[4],
+ ndlp->nlp_nodename.u.wwn[5],
+ ndlp->nlp_nodename.u.wwn[6],
+ ndlp->nlp_nodename.u.wwn[7],
+ ndlp->nlp_portname.u.wwn[0],
+ ndlp->nlp_portname.u.wwn[1],
+ ndlp->nlp_portname.u.wwn[2],
+ ndlp->nlp_portname.u.wwn[3],
+ ndlp->nlp_portname.u.wwn[4],
+ ndlp->nlp_portname.u.wwn[5],
+ ndlp->nlp_portname.u.wwn[6],
+ ndlp->nlp_portname.u.wwn[7]);
+ goto out_tgt_busy;
+ }
+ }
+
+ lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd);
+ if (lpfc_cmd == NULL) {
+ lpfc_rampdown_queue_depth(phba);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
+ "0707 driver's buffer pool is empty, "
+ "IO busied\n");
+ goto out_host_busy;
+ }
+
+ /*
+ * Store the midlayer's command structure for the completion phase
+ * and complete the command initialization.
+ */
+ lpfc_cmd->pCmd = cmnd;
+ lpfc_cmd->rdata = rdata;
+ lpfc_cmd->ndlp = ndlp;
+ cmnd->host_scribble = (unsigned char *)lpfc_cmd;
+
+ if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
+ if (vport->phba->cfg_enable_bg) {
+ lpfc_printf_vlog(vport,
+ KERN_INFO, LOG_SCSI_CMD,
+ "9033 BLKGRD: rcvd %s cmd:x%x "
+ "sector x%llx cnt %u pt %x\n",
+ dif_op_str[scsi_get_prot_op(cmnd)],
+ cmnd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmnd),
+ blk_rq_sectors(cmnd->request),
+ (cmnd->cmnd[1]>>5));
+ }
+ err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
+ } else {
+ if (vport->phba->cfg_enable_bg) {
+ lpfc_printf_vlog(vport,
+ KERN_INFO, LOG_SCSI_CMD,
+ "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
+ "x%x sector x%llx cnt %u pt %x\n",
+ cmnd->cmnd[0],
+ (unsigned long long)scsi_get_lba(cmnd),
+ blk_rq_sectors(cmnd->request),
+ (cmnd->cmnd[1]>>5));
+ }
+ err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
+ }
+
+ if (err == 2) {
+ cmnd->result = DID_ERROR << 16;
+ goto out_fail_command_release_buf;
+ } else if (err) {
+ goto out_host_busy_free_buf;
+ }
+
+ lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ if (phba->cpucheck_on & LPFC_CHECK_SCSI_IO) {
+ cpu = raw_smp_processor_id();
+ if (cpu < LPFC_CHECK_CPU_CNT) {
+ struct lpfc_sli4_hdw_queue *hdwq =
+ &phba->sli4_hba.hdwq[lpfc_cmd->hdwq_no];
+ hdwq->cpucheck_xmt_io[cpu]++;
+ }
+ }
+#endif
+ err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
+ &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
+ if (err) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "3376 FCP could not issue IOCB err %x"
+ "FCP cmd x%x <%d/%llu> "
+ "sid: x%x did: x%x oxid: x%x "
+ "Data: x%x x%x x%x x%x\n",
+ err, cmnd->cmnd[0],
+ cmnd->device ? cmnd->device->id : 0xffff,
+ cmnd->device ? cmnd->device->lun : (u64) -1,
+ vport->fc_myDID, ndlp->nlp_DID,
+ phba->sli_rev == LPFC_SLI_REV4 ?
+ lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
+ lpfc_cmd->cur_iocbq.iocb.ulpContext,
+ lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
+ lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
+ (uint32_t)
+ (cmnd->request->timeout / 1000));
+
+ goto out_host_busy_free_buf;
+ }
+ if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT)
+ lpfc_poll_rearm_timer(phba);
+ }
+
+ if (phba->cfg_xri_rebalancing)
+ lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no);
+
+ return 0;
+
+ out_host_busy_free_buf:
+ idx = lpfc_cmd->hdwq_no;
+ lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
+ if (phba->sli4_hba.hdwq) {
+ switch (lpfc_cmd->fcp_cmnd->fcpCntl3) {
+ case WRITE_DATA:
+ phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--;
+ break;
+ case READ_DATA:
+ phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--;
+ break;
+ default:
+ phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--;
+ }
+ }
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+ out_host_busy:
+ return SCSI_MLQUEUE_HOST_BUSY;
+
+ out_tgt_busy:
+ return SCSI_MLQUEUE_TARGET_BUSY;
+
+ out_fail_command_release_buf:
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+
+ out_fail_command:
+ cmnd->scsi_done(cmnd);
+ return 0;
+}
+
+
+/**
+ * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine aborts @cmnd pending in base driver.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_abort_handler(struct scsi_cmnd *cmnd)
+{
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *iocb;
+ struct lpfc_iocbq *abtsiocb;
+ struct lpfc_io_buf *lpfc_cmd;
+ IOCB_t *cmd, *icmd;
+ int ret = SUCCESS, status = 0;
+ struct lpfc_sli_ring *pring_s4 = NULL;
+ int ret_val;
+ unsigned long flags;
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
+
+ status = fc_block_scsi_eh(cmnd);
+ if (status != 0 && status != SUCCESS)
+ return status;
+
+ lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble;
+ if (!lpfc_cmd)
+ return ret;
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ /* driver queued commands are in process of being flushed */
+ if (phba->hba_flag & HBA_IOQ_FLUSH) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "3168 SCSI Layer abort requested I/O has been "
+ "flushed by LLD.\n");
+ ret = FAILED;
+ goto out_unlock;
+ }
+
+ /* Guard against IO completion being called at same time */
+ spin_lock(&lpfc_cmd->buf_lock);
+
+ if (!lpfc_cmd->pCmd) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "2873 SCSI Layer I/O Abort Request IO CMPL Status "
+ "x%x ID %d LUN %llu\n",
+ SUCCESS, cmnd->device->id, cmnd->device->lun);
+ goto out_unlock_buf;
+ }
+
+ iocb = &lpfc_cmd->cur_iocbq;
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring;
+ if (!pring_s4) {
+ ret = FAILED;
+ goto out_unlock_buf;
+ }
+ spin_lock(&pring_s4->ring_lock);
+ }
+ /* the command is in process of being cancelled */
+ if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "3169 SCSI Layer abort requested I/O has been "
+ "cancelled by LLD.\n");
+ ret = FAILED;
+ goto out_unlock_ring;
+ }
+ /*
+ * If pCmd field of the corresponding lpfc_io_buf structure
+ * points to a different SCSI command, then the driver has
+ * already completed this command, but the midlayer did not
+ * see the completion before the eh fired. Just return SUCCESS.
+ */
+ if (lpfc_cmd->pCmd != cmnd) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "3170 SCSI Layer abort requested I/O has been "
+ "completed by LLD.\n");
+ goto out_unlock_ring;
+ }
+
+ BUG_ON(iocb->context1 != lpfc_cmd);
+
+ /* abort issued in recovery is still in progress */
+ if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "3389 SCSI Layer I/O Abort Request is pending\n");
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring_s4->ring_lock);
+ spin_unlock(&lpfc_cmd->buf_lock);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ goto wait_for_cmpl;
+ }
+
+ abtsiocb = __lpfc_sli_get_iocbq(phba);
+ if (abtsiocb == NULL) {
+ ret = FAILED;
+ goto out_unlock_ring;
+ }
+
+ /* Indicate the IO is being aborted by the driver. */
+ iocb->iocb_flag |= LPFC_DRIVER_ABORTED;
+
+ /*
+ * The scsi command can not be in txq and it is in flight because the
+ * pCmd is still pointig at the SCSI command we have to abort. There
+ * is no need to search the txcmplq. Just send an abort to the FW.
+ */
+
+ cmd = &iocb->iocb;
+ icmd = &abtsiocb->iocb;
+ icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
+ icmd->un.acxri.abortContextTag = cmd->ulpContext;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
+ else
+ icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
+
+ icmd->ulpLe = 1;
+ icmd->ulpClass = cmd->ulpClass;
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abtsiocb->hba_wqidx = iocb->hba_wqidx;
+ abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
+ if (iocb->iocb_flag & LPFC_IO_FOF)
+ abtsiocb->iocb_flag |= LPFC_IO_FOF;
+
+ if (lpfc_is_link_up(phba))
+ icmd->ulpCommand = CMD_ABORT_XRI_CN;
+ else
+ icmd->ulpCommand = CMD_CLOSE_XRI_CN;
+
+ abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
+ abtsiocb->vport = vport;
+ lpfc_cmd->waitq = &waitq;
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ /* Note: both hbalock and ring_lock must be set here */
+ ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
+ abtsiocb, 0);
+ spin_unlock(&pring_s4->ring_lock);
+ } else {
+ ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
+ abtsiocb, 0);
+ }
+
+ if (ret_val == IOCB_ERROR) {
+ /* Indicate the IO is not being aborted by the driver. */
+ iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
+ lpfc_cmd->waitq = NULL;
+ spin_unlock(&lpfc_cmd->buf_lock);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ lpfc_sli_release_iocbq(phba, abtsiocb);
+ ret = FAILED;
+ goto out;
+ }
+
+ /* no longer need the lock after this point */
+ spin_unlock(&lpfc_cmd->buf_lock);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT)
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
+wait_for_cmpl:
+ /* Wait for abort to complete */
+ wait_event_timeout(waitq,
+ (lpfc_cmd->pCmd != cmnd),
+ msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
+
+ spin_lock(&lpfc_cmd->buf_lock);
+
+ if (lpfc_cmd->pCmd == cmnd) {
+ ret = FAILED;
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0748 abort handler timed out waiting "
+ "for aborting I/O (xri:x%x) to complete: "
+ "ret %#x, ID %d, LUN %llu\n",
+ iocb->sli4_xritag, ret,
+ cmnd->device->id, cmnd->device->lun);
+ }
+
+ lpfc_cmd->waitq = NULL;
+
+ spin_unlock(&lpfc_cmd->buf_lock);
+ goto out;
+
+out_unlock_ring:
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring_s4->ring_lock);
+out_unlock_buf:
+ spin_unlock(&lpfc_cmd->buf_lock);
+out_unlock:
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+out:
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
+ "LUN %llu\n", ret, cmnd->device->id,
+ cmnd->device->lun);
+ return ret;
+}
+
+static char *
+lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
+{
+ switch (task_mgmt_cmd) {
+ case FCP_ABORT_TASK_SET:
+ return "ABORT_TASK_SET";
+ case FCP_CLEAR_TASK_SET:
+ return "FCP_CLEAR_TASK_SET";
+ case FCP_BUS_RESET:
+ return "FCP_BUS_RESET";
+ case FCP_LUN_RESET:
+ return "FCP_LUN_RESET";
+ case FCP_TARGET_RESET:
+ return "FCP_TARGET_RESET";
+ case FCP_CLEAR_ACA:
+ return "FCP_CLEAR_ACA";
+ case FCP_TERMINATE_TASK:
+ return "FCP_TERMINATE_TASK";
+ default:
+ return "unknown";
+ }
+}
+
+
+/**
+ * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed
+ * @vport: The virtual port for which this call is being executed.
+ * @lpfc_cmd: Pointer to lpfc_io_buf data structure.
+ *
+ * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd)
+{
+ struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
+ uint32_t rsp_info;
+ uint32_t rsp_len;
+ uint8_t rsp_info_code;
+ int ret = FAILED;
+
+
+ if (fcprsp == NULL)
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0703 fcp_rsp is missing\n");
+ else {
+ rsp_info = fcprsp->rspStatus2;
+ rsp_len = be32_to_cpu(fcprsp->rspRspLen);
+ rsp_info_code = fcprsp->rspInfo3;
+
+
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_FCP,
+ "0706 fcp_rsp valid 0x%x,"
+ " rsp len=%d code 0x%x\n",
+ rsp_info,
+ rsp_len, rsp_info_code);
+
+ /* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN
+ * field specifies the number of valid bytes of FCP_RSP_INFO.
+ * The FCP_RSP_LEN field shall be set to 0x04 or 0x08
+ */
+ if ((fcprsp->rspStatus2 & RSP_LEN_VALID) &&
+ ((rsp_len == 8) || (rsp_len == 4))) {
+ switch (rsp_info_code) {
+ case RSP_NO_FAILURE:
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0715 Task Mgmt No Failure\n");
+ ret = SUCCESS;
+ break;
+ case RSP_TM_NOT_SUPPORTED: /* TM rejected */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0716 Task Mgmt Target "
+ "reject\n");
+ break;
+ case RSP_TM_NOT_COMPLETED: /* TM failed */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0717 Task Mgmt Target "
+ "failed TM\n");
+ break;
+ case RSP_TM_INVALID_LU: /* TM to invalid LU! */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0718 Task Mgmt to invalid "
+ "LUN\n");
+ break;
+ }
+ }
+ }
+ return ret;
+}
+
+
+/**
+ * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
+ * @vport: The virtual port for which this call is being executed.
+ * @rdata: Pointer to remote port local data
+ * @tgt_id: Target ID of remote device.
+ * @lun_id: Lun number for the TMF
+ * @task_mgmt_cmd: type of TMF to send
+ *
+ * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
+ * a remote port.
+ *
+ * Return Code:
+ * 0x2003 - Error
+ * 0x2002 - Success.
+ **/
+static int
+lpfc_send_taskmgmt(struct lpfc_vport *vport, struct scsi_cmnd *cmnd,
+ unsigned int tgt_id, uint64_t lun_id,
+ uint8_t task_mgmt_cmd)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_io_buf *lpfc_cmd;
+ struct lpfc_iocbq *iocbq;
+ struct lpfc_iocbq *iocbqrsp;
+ struct lpfc_rport_data *rdata;
+ struct lpfc_nodelist *pnode;
+ int ret;
+ int status;
+
+ rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
+ if (!rdata || !rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
+ return FAILED;
+ pnode = rdata->pnode;
+
+ lpfc_cmd = lpfc_get_scsi_buf(phba, pnode, NULL);
+ if (lpfc_cmd == NULL)
+ return FAILED;
+ lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo;
+ lpfc_cmd->rdata = rdata;
+ lpfc_cmd->pCmd = cmnd;
+ lpfc_cmd->ndlp = pnode;
+
+ status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
+ task_mgmt_cmd);
+ if (!status) {
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+ return FAILED;
+ }
+
+ iocbq = &lpfc_cmd->cur_iocbq;
+ iocbqrsp = lpfc_sli_get_iocbq(phba);
+ if (iocbqrsp == NULL) {
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+ return FAILED;
+ }
+ iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0702 Issue %s to TGT %d LUN %llu "
+ "rpi x%x nlp_flag x%x Data: x%x x%x\n",
+ lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
+ pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
+ iocbq->iocb_flag);
+
+ status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
+ iocbq, iocbqrsp, lpfc_cmd->timeout);
+ if ((status != IOCB_SUCCESS) ||
+ (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) {
+ if (status != IOCB_SUCCESS ||
+ iocbqrsp->iocb.ulpStatus != IOSTAT_FCP_RSP_ERROR)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0727 TMF %s to TGT %d LUN %llu "
+ "failed (%d, %d) iocb_flag x%x\n",
+ lpfc_taskmgmt_name(task_mgmt_cmd),
+ tgt_id, lun_id,
+ iocbqrsp->iocb.ulpStatus,
+ iocbqrsp->iocb.un.ulpWord[4],
+ iocbq->iocb_flag);
+ /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */
+ if (status == IOCB_SUCCESS) {
+ if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
+ /* Something in the FCP_RSP was invalid.
+ * Check conditions */
+ ret = lpfc_check_fcp_rsp(vport, lpfc_cmd);
+ else
+ ret = FAILED;
+ } else if (status == IOCB_TIMEDOUT) {
+ ret = TIMEOUT_ERROR;
+ } else {
+ ret = FAILED;
+ }
+ } else
+ ret = SUCCESS;
+
+ lpfc_sli_release_iocbq(phba, iocbqrsp);
+
+ if (ret != TIMEOUT_ERROR)
+ lpfc_release_scsi_buf(phba, lpfc_cmd);
+
+ return ret;
+}
+
+/**
+ * lpfc_chk_tgt_mapped -
+ * @vport: The virtual port to check on
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine delays until the scsi target (aka rport) for the
+ * command exists (is present and logged in) or we declare it non-existent.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
+{
+ struct lpfc_rport_data *rdata;
+ struct lpfc_nodelist *pnode;
+ unsigned long later;
+
+ rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
+ if (!rdata) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0797 Tgt Map rport failure: rdata x%px\n", rdata);
+ return FAILED;
+ }
+ pnode = rdata->pnode;
+ /*
+ * If target is not in a MAPPED state, delay until
+ * target is rediscovered or devloss timeout expires.
+ */
+ later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
+ while (time_after(later, jiffies)) {
+ if (!pnode || !NLP_CHK_NODE_ACT(pnode))
+ return FAILED;
+ if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
+ return SUCCESS;
+ schedule_timeout_uninterruptible(msecs_to_jiffies(500));
+ rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
+ if (!rdata)
+ return FAILED;
+ pnode = rdata->pnode;
+ }
+ if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
+ (pnode->nlp_state != NLP_STE_MAPPED_NODE))
+ return FAILED;
+ return SUCCESS;
+}
+
+/**
+ * lpfc_reset_flush_io_context -
+ * @vport: The virtual port (scsi_host) for the flush context
+ * @tgt_id: If aborting by Target contect - specifies the target id
+ * @lun_id: If aborting by Lun context - specifies the lun id
+ * @context: specifies the context level to flush at.
+ *
+ * After a reset condition via TMF, we need to flush orphaned i/o
+ * contexts from the adapter. This routine aborts any contexts
+ * outstanding, then waits for their completions. The wait is
+ * bounded by devloss_tmo though.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
+ uint64_t lun_id, lpfc_ctx_cmd context)
+{
+ struct lpfc_hba *phba = vport->phba;
+ unsigned long later;
+ int cnt;
+
+ cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
+ if (cnt)
+ lpfc_sli_abort_taskmgmt(vport,
+ &phba->sli.sli3_ring[LPFC_FCP_RING],
+ tgt_id, lun_id, context);
+ later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
+ while (time_after(later, jiffies) && cnt) {
+ schedule_timeout_uninterruptible(msecs_to_jiffies(20));
+ cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
+ }
+ if (cnt) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0724 I/O flush failure for context %s : cnt x%x\n",
+ ((context == LPFC_CTX_LUN) ? "LUN" :
+ ((context == LPFC_CTX_TGT) ? "TGT" :
+ ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
+ cnt);
+ return FAILED;
+ }
+ return SUCCESS;
+}
+
+/**
+ * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine does a device reset by sending a LUN_RESET task management
+ * command.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
+{
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ struct lpfc_rport_data *rdata;
+ struct lpfc_nodelist *pnode;
+ unsigned tgt_id = cmnd->device->id;
+ uint64_t lun_id = cmnd->device->lun;
+ struct lpfc_scsi_event_header scsi_event;
+ int status;
+
+ rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
+ if (!rdata || !rdata->pnode) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0798 Device Reset rdata failure: rdata x%px\n",
+ rdata);
+ return FAILED;
+ }
+ pnode = rdata->pnode;
+ status = fc_block_scsi_eh(cmnd);
+ if (status != 0 && status != SUCCESS)
+ return status;
+
+ status = lpfc_chk_tgt_mapped(vport, cmnd);
+ if (status == FAILED) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0721 Device Reset rport failure: rdata x%px\n", rdata);
+ return FAILED;
+ }
+
+ scsi_event.event_type = FC_REG_SCSI_EVENT;
+ scsi_event.subcategory = LPFC_EVENT_LUNRESET;
+ scsi_event.lun = lun_id;
+ memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
+ memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
+
+ fc_host_post_vendor_event(shost, fc_get_event_number(),
+ sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+ status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id,
+ FCP_LUN_RESET);
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0713 SCSI layer issued Device Reset (%d, %llu) "
+ "return x%x\n", tgt_id, lun_id, status);
+
+ /*
+ * We have to clean up i/o as : they may be orphaned by the TMF;
+ * or if the TMF failed, they may be in an indeterminate state.
+ * So, continue on.
+ * We will report success if all the i/o aborts successfully.
+ */
+ if (status == SUCCESS)
+ status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
+ LPFC_CTX_LUN);
+
+ return status;
+}
+
+/**
+ * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine does a target reset by sending a TARGET_RESET task management
+ * command.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
+{
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ struct lpfc_rport_data *rdata;
+ struct lpfc_nodelist *pnode;
+ unsigned tgt_id = cmnd->device->id;
+ uint64_t lun_id = cmnd->device->lun;
+ struct lpfc_scsi_event_header scsi_event;
+ int status;
+
+ rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
+ if (!rdata || !rdata->pnode) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0799 Target Reset rdata failure: rdata x%px\n",
+ rdata);
+ return FAILED;
+ }
+ pnode = rdata->pnode;
+ status = fc_block_scsi_eh(cmnd);
+ if (status != 0 && status != SUCCESS)
+ return status;
+
+ status = lpfc_chk_tgt_mapped(vport, cmnd);
+ if (status == FAILED) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0722 Target Reset rport failure: rdata x%px\n", rdata);
+ if (pnode) {
+ spin_lock_irq(shost->host_lock);
+ pnode->nlp_flag &= ~NLP_NPR_ADISC;
+ pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+ spin_unlock_irq(shost->host_lock);
+ }
+ lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
+ LPFC_CTX_TGT);
+ return FAST_IO_FAIL;
+ }
+
+ scsi_event.event_type = FC_REG_SCSI_EVENT;
+ scsi_event.subcategory = LPFC_EVENT_TGTRESET;
+ scsi_event.lun = 0;
+ memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
+ memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
+
+ fc_host_post_vendor_event(shost, fc_get_event_number(),
+ sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+ status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id,
+ FCP_TARGET_RESET);
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0723 SCSI layer issued Target Reset (%d, %llu) "
+ "return x%x\n", tgt_id, lun_id, status);
+
+ /*
+ * We have to clean up i/o as : they may be orphaned by the TMF;
+ * or if the TMF failed, they may be in an indeterminate state.
+ * So, continue on.
+ * We will report success if all the i/o aborts successfully.
+ */
+ if (status == SUCCESS)
+ status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
+ LPFC_CTX_TGT);
+ return status;
+}
+
+/**
+ * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine does target reset to all targets on @cmnd->device->host.
+ * This emulates Parallel SCSI Bus Reset Semantics.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
+{
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ struct lpfc_nodelist *ndlp = NULL;
+ struct lpfc_scsi_event_header scsi_event;
+ int match;
+ int ret = SUCCESS, status, i;
+
+ scsi_event.event_type = FC_REG_SCSI_EVENT;
+ scsi_event.subcategory = LPFC_EVENT_BUSRESET;
+ scsi_event.lun = 0;
+ memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
+ memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
+
+ fc_host_post_vendor_event(shost, fc_get_event_number(),
+ sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+ status = fc_block_scsi_eh(cmnd);
+ if (status != 0 && status != SUCCESS)
+ return status;
+
+ /*
+ * Since the driver manages a single bus device, reset all
+ * targets known to the driver. Should any target reset
+ * fail, this routine returns failure to the midlayer.
+ */
+ for (i = 0; i < LPFC_MAX_TARGET; i++) {
+ /* Search for mapped node by target ID */
+ match = 0;
+ spin_lock_irq(shost->host_lock);
+ list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+ if (vport->phba->cfg_fcp2_no_tgt_reset &&
+ (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
+ continue;
+ if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
+ ndlp->nlp_sid == i &&
+ ndlp->rport &&
+ ndlp->nlp_type & NLP_FCP_TARGET) {
+ match = 1;
+ break;
+ }
+ }
+ spin_unlock_irq(shost->host_lock);
+ if (!match)
+ continue;
+
+ status = lpfc_send_taskmgmt(vport, cmnd,
+ i, 0, FCP_TARGET_RESET);
+
+ if (status != SUCCESS) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0700 Bus Reset on target %d failed\n",
+ i);
+ ret = FAILED;
+ }
+ }
+ /*
+ * We have to clean up i/o as : they may be orphaned by the TMFs
+ * above; or if any of the TMFs failed, they may be in an
+ * indeterminate state.
+ * We will report success if all the i/o aborts successfully.
+ */
+
+ status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
+ if (status != SUCCESS)
+ ret = FAILED;
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
+ return ret;
+}
+
+/**
+ * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
+ * @cmnd: Pointer to scsi_cmnd data structure.
+ *
+ * This routine does host reset to the adaptor port. It brings the HBA
+ * offline, performs a board restart, and then brings the board back online.
+ * The lpfc_offline calls lpfc_sli_hba_down which will abort and local
+ * reject all outstanding SCSI commands to the host and error returned
+ * back to SCSI mid-level. As this will be SCSI mid-level's last resort
+ * of error handling, it will only return error if resetting of the adapter
+ * is not successful; in all other cases, will return success.
+ *
+ * Return code :
+ * 0x2003 - Error
+ * 0x2002 - Success
+ **/
+static int
+lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
+{
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ int rc, ret = SUCCESS;
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "3172 SCSI layer issued Host Reset Data:\n");
+
+ lpfc_offline_prep(phba, LPFC_MBX_WAIT);
+ lpfc_offline(phba);
+ rc = lpfc_sli_brdrestart(phba);
+ if (rc)
+ goto error;
+
+ rc = lpfc_online(phba);
+ if (rc)
+ goto error;
+
+ lpfc_unblock_mgmt_io(phba);
+
+ return ret;
+error:
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "3323 Failed host reset\n");
+ lpfc_unblock_mgmt_io(phba);
+ return FAILED;
+}
+
+/**
+ * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
+ * @sdev: Pointer to scsi_device.
+ *
+ * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
+ * globally available list of scsi buffers. This routine also makes sure scsi
+ * buffer is not allocated more than HBA limit conveyed to midlayer. This list
+ * of scsi buffer exists for the lifetime of the driver.
+ *
+ * Return codes:
+ * non-0 - Error
+ * 0 - Success
+ **/
+static int
+lpfc_slave_alloc(struct scsi_device *sdev)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
+ uint32_t total = 0;
+ uint32_t num_to_alloc = 0;
+ int num_allocated = 0;
+ uint32_t sdev_cnt;
+ struct lpfc_device_data *device_data;
+ unsigned long flags;
+ struct lpfc_name target_wwpn;
+
+ if (!rport || fc_remote_port_chkready(rport))
+ return -ENXIO;
+
+ if (phba->cfg_fof) {
+
+ /*
+ * Check to see if the device data structure for the lun
+ * exists. If not, create one.
+ */
+
+ u64_to_wwn(rport->port_name, target_wwpn.u.wwn);
+ spin_lock_irqsave(&phba->devicelock, flags);
+ device_data = __lpfc_get_device_data(phba,
+ &phba->luns,
+ &vport->fc_portname,
+ &target_wwpn,
+ sdev->lun);
+ if (!device_data) {
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ device_data = lpfc_create_device_data(phba,
+ &vport->fc_portname,
+ &target_wwpn,
+ sdev->lun,
+ phba->cfg_XLanePriority,
+ true);
+ if (!device_data)
+ return -ENOMEM;
+ spin_lock_irqsave(&phba->devicelock, flags);
+ list_add_tail(&device_data->listentry, &phba->luns);
+ }
+ device_data->rport_data = rport->dd_data;
+ device_data->available = true;
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ sdev->hostdata = device_data;
+ } else {
+ sdev->hostdata = rport->dd_data;
+ }
+ sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
+
+ /* For SLI4, all IO buffers are pre-allocated */
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ return 0;
+
+ /* This code path is now ONLY for SLI3 adapters */
+
+ /*
+ * Populate the cmds_per_lun count scsi_bufs into this host's globally
+ * available list of scsi buffers. Don't allocate more than the
+ * HBA limit conveyed to the midlayer via the host structure. The
+ * formula accounts for the lun_queue_depth + error handlers + 1
+ * extra. This list of scsi bufs exists for the lifetime of the driver.
+ */
+ total = phba->total_scsi_bufs;
+ num_to_alloc = vport->cfg_lun_queue_depth + 2;
+
+ /* If allocated buffers are enough do nothing */
+ if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
+ return 0;
+
+ /* Allow some exchanges to be available always to complete discovery */
+ if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "0704 At limitation of %d preallocated "
+ "command buffers\n", total);
+ return 0;
+ /* Allow some exchanges to be available always to complete discovery */
+ } else if (total + num_to_alloc >
+ phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
+ "0705 Allocation request of %d "
+ "command buffers will exceed max of %d. "
+ "Reducing allocation request to %d.\n",
+ num_to_alloc, phba->cfg_hba_queue_depth,
+ (phba->cfg_hba_queue_depth - total));
+ num_to_alloc = phba->cfg_hba_queue_depth - total;
+ }
+ num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc);
+ if (num_to_alloc != num_allocated) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0708 Allocation request of %d "
+ "command buffers did not succeed. "
+ "Allocated %d buffers.\n",
+ num_to_alloc, num_allocated);
+ }
+ if (num_allocated > 0)
+ phba->total_scsi_bufs += num_allocated;
+ return 0;
+}
+
+/**
+ * lpfc_slave_configure - scsi_host_template slave_configure entry point
+ * @sdev: Pointer to scsi_device.
+ *
+ * This routine configures following items
+ * - Tag command queuing support for @sdev if supported.
+ * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
+ *
+ * Return codes:
+ * 0 - Success
+ **/
+static int
+lpfc_slave_configure(struct scsi_device *sdev)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+
+ scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth);
+
+ if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT)
+ lpfc_poll_rearm_timer(phba);
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
+ * @sdev: Pointer to scsi_device.
+ *
+ * This routine sets @sdev hostatdata filed to null.
+ **/
+static void
+lpfc_slave_destroy(struct scsi_device *sdev)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ unsigned long flags;
+ struct lpfc_device_data *device_data = sdev->hostdata;
+
+ atomic_dec(&phba->sdev_cnt);
+ if ((phba->cfg_fof) && (device_data)) {
+ spin_lock_irqsave(&phba->devicelock, flags);
+ device_data->available = false;
+ if (!device_data->oas_enabled)
+ lpfc_delete_device_data(phba, device_data);
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ }
+ sdev->hostdata = NULL;
+ return;
+}
+
+/**
+ * lpfc_create_device_data - creates and initializes device data structure for OAS
+ * @pha: Pointer to host bus adapter structure.
+ * @vport_wwpn: Pointer to vport's wwpn information
+ * @target_wwpn: Pointer to target's wwpn information
+ * @lun: Lun on target
+ * @atomic_create: Flag to indicate if memory should be allocated using the
+ * GFP_ATOMIC flag or not.
+ *
+ * This routine creates a device data structure which will contain identifying
+ * information for the device (host wwpn, target wwpn, lun), state of OAS,
+ * whether or not the corresponding lun is available by the system,
+ * and pointer to the rport data.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_device_data - Success
+ **/
+struct lpfc_device_data*
+lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
+ struct lpfc_name *target_wwpn, uint64_t lun,
+ uint32_t pri, bool atomic_create)
+{
+
+ struct lpfc_device_data *lun_info;
+ int memory_flags;
+
+ if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
+ !(phba->cfg_fof))
+ return NULL;
+
+ /* Attempt to create the device data to contain lun info */
+
+ if (atomic_create)
+ memory_flags = GFP_ATOMIC;
+ else
+ memory_flags = GFP_KERNEL;
+ lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags);
+ if (!lun_info)
+ return NULL;
+ INIT_LIST_HEAD(&lun_info->listentry);
+ lun_info->rport_data = NULL;
+ memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn,
+ sizeof(struct lpfc_name));
+ memcpy(&lun_info->device_id.target_wwpn, target_wwpn,
+ sizeof(struct lpfc_name));
+ lun_info->device_id.lun = lun;
+ lun_info->oas_enabled = false;
+ lun_info->priority = pri;
+ lun_info->available = false;
+ return lun_info;
+}
+
+/**
+ * lpfc_delete_device_data - frees a device data structure for OAS
+ * @pha: Pointer to host bus adapter structure.
+ * @lun_info: Pointer to device data structure to free.
+ *
+ * This routine frees the previously allocated device data structure passed.
+ *
+ **/
+void
+lpfc_delete_device_data(struct lpfc_hba *phba,
+ struct lpfc_device_data *lun_info)
+{
+
+ if (unlikely(!phba) || !lun_info ||
+ !(phba->cfg_fof))
+ return;
+
+ if (!list_empty(&lun_info->listentry))
+ list_del(&lun_info->listentry);
+ mempool_free(lun_info, phba->device_data_mem_pool);
+ return;
+}
+
+/**
+ * __lpfc_get_device_data - returns the device data for the specified lun
+ * @pha: Pointer to host bus adapter structure.
+ * @list: Point to list to search.
+ * @vport_wwpn: Pointer to vport's wwpn information
+ * @target_wwpn: Pointer to target's wwpn information
+ * @lun: Lun on target
+ *
+ * This routine searches the list passed for the specified lun's device data.
+ * This function does not hold locks, it is the responsibility of the caller
+ * to ensure the proper lock is held before calling the function.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_device_data - Success
+ **/
+struct lpfc_device_data*
+__lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list,
+ struct lpfc_name *vport_wwpn,
+ struct lpfc_name *target_wwpn, uint64_t lun)
+{
+
+ struct lpfc_device_data *lun_info;
+
+ if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn ||
+ !phba->cfg_fof)
+ return NULL;
+
+ /* Check to see if the lun is already enabled for OAS. */
+
+ list_for_each_entry(lun_info, list, listentry) {
+ if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
+ sizeof(struct lpfc_name)) == 0) &&
+ (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
+ sizeof(struct lpfc_name)) == 0) &&
+ (lun_info->device_id.lun == lun))
+ return lun_info;
+ }
+
+ return NULL;
+}
+
+/**
+ * lpfc_find_next_oas_lun - searches for the next oas lun
+ * @pha: Pointer to host bus adapter structure.
+ * @vport_wwpn: Pointer to vport's wwpn information
+ * @target_wwpn: Pointer to target's wwpn information
+ * @starting_lun: Pointer to the lun to start searching for
+ * @found_vport_wwpn: Pointer to the found lun's vport wwpn information
+ * @found_target_wwpn: Pointer to the found lun's target wwpn information
+ * @found_lun: Pointer to the found lun.
+ * @found_lun_status: Pointer to status of the found lun.
+ *
+ * This routine searches the luns list for the specified lun
+ * or the first lun for the vport/target. If the vport wwpn contains
+ * a zero value then a specific vport is not specified. In this case
+ * any vport which contains the lun will be considered a match. If the
+ * target wwpn contains a zero value then a specific target is not specified.
+ * In this case any target which contains the lun will be considered a
+ * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status
+ * are returned. The function will also return the next lun if available.
+ * If the next lun is not found, starting_lun parameter will be set to
+ * NO_MORE_OAS_LUN.
+ *
+ * Return codes:
+ * non-0 - Error
+ * 0 - Success
+ **/
+bool
+lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
+ struct lpfc_name *target_wwpn, uint64_t *starting_lun,
+ struct lpfc_name *found_vport_wwpn,
+ struct lpfc_name *found_target_wwpn,
+ uint64_t *found_lun,
+ uint32_t *found_lun_status,
+ uint32_t *found_lun_pri)
+{
+
+ unsigned long flags;
+ struct lpfc_device_data *lun_info;
+ struct lpfc_device_id *device_id;
+ uint64_t lun;
+ bool found = false;
+
+ if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
+ !starting_lun || !found_vport_wwpn ||
+ !found_target_wwpn || !found_lun || !found_lun_status ||
+ (*starting_lun == NO_MORE_OAS_LUN) ||
+ !phba->cfg_fof)
+ return false;
+
+ lun = *starting_lun;
+ *found_lun = NO_MORE_OAS_LUN;
+ *starting_lun = NO_MORE_OAS_LUN;
+
+ /* Search for lun or the lun closet in value */
+
+ spin_lock_irqsave(&phba->devicelock, flags);
+ list_for_each_entry(lun_info, &phba->luns, listentry) {
+ if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) ||
+ (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
+ sizeof(struct lpfc_name)) == 0)) &&
+ ((wwn_to_u64(target_wwpn->u.wwn) == 0) ||
+ (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
+ sizeof(struct lpfc_name)) == 0)) &&
+ (lun_info->oas_enabled)) {
+ device_id = &lun_info->device_id;
+ if ((!found) &&
+ ((lun == FIND_FIRST_OAS_LUN) ||
+ (device_id->lun == lun))) {
+ *found_lun = device_id->lun;
+ memcpy(found_vport_wwpn,
+ &device_id->vport_wwpn,
+ sizeof(struct lpfc_name));
+ memcpy(found_target_wwpn,
+ &device_id->target_wwpn,
+ sizeof(struct lpfc_name));
+ if (lun_info->available)
+ *found_lun_status =
+ OAS_LUN_STATUS_EXISTS;
+ else
+ *found_lun_status = 0;
+ *found_lun_pri = lun_info->priority;
+ if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)
+ memset(vport_wwpn, 0x0,
+ sizeof(struct lpfc_name));
+ if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)
+ memset(target_wwpn, 0x0,
+ sizeof(struct lpfc_name));
+ found = true;
+ } else if (found) {
+ *starting_lun = device_id->lun;
+ memcpy(vport_wwpn, &device_id->vport_wwpn,
+ sizeof(struct lpfc_name));
+ memcpy(target_wwpn, &device_id->target_wwpn,
+ sizeof(struct lpfc_name));
+ break;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ return found;
+}
+
+/**
+ * lpfc_enable_oas_lun - enables a lun for OAS operations
+ * @pha: Pointer to host bus adapter structure.
+ * @vport_wwpn: Pointer to vport's wwpn information
+ * @target_wwpn: Pointer to target's wwpn information
+ * @lun: Lun
+ *
+ * This routine enables a lun for oas operations. The routines does so by
+ * doing the following :
+ *
+ * 1) Checks to see if the device data for the lun has been created.
+ * 2) If found, sets the OAS enabled flag if not set and returns.
+ * 3) Otherwise, creates a device data structure.
+ * 4) If successfully created, indicates the device data is for an OAS lun,
+ * indicates the lun is not available and add to the list of luns.
+ *
+ * Return codes:
+ * false - Error
+ * true - Success
+ **/
+bool
+lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
+ struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
+{
+
+ struct lpfc_device_data *lun_info;
+ unsigned long flags;
+
+ if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
+ !phba->cfg_fof)
+ return false;
+
+ spin_lock_irqsave(&phba->devicelock, flags);
+
+ /* Check to see if the device data for the lun has been created */
+ lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn,
+ target_wwpn, lun);
+ if (lun_info) {
+ if (!lun_info->oas_enabled)
+ lun_info->oas_enabled = true;
+ lun_info->priority = pri;
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ return true;
+ }
+
+ /* Create an lun info structure and add to list of luns */
+ lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun,
+ pri, true);
+ if (lun_info) {
+ lun_info->oas_enabled = true;
+ lun_info->priority = pri;
+ lun_info->available = false;
+ list_add_tail(&lun_info->listentry, &phba->luns);
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ return true;
+ }
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ return false;
+}
+
+/**
+ * lpfc_disable_oas_lun - disables a lun for OAS operations
+ * @pha: Pointer to host bus adapter structure.
+ * @vport_wwpn: Pointer to vport's wwpn information
+ * @target_wwpn: Pointer to target's wwpn information
+ * @lun: Lun
+ *
+ * This routine disables a lun for oas operations. The routines does so by
+ * doing the following :
+ *
+ * 1) Checks to see if the device data for the lun is created.
+ * 2) If present, clears the flag indicating this lun is for OAS.
+ * 3) If the lun is not available by the system, the device data is
+ * freed.
+ *
+ * Return codes:
+ * false - Error
+ * true - Success
+ **/
+bool
+lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
+ struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
+{
+
+ struct lpfc_device_data *lun_info;
+ unsigned long flags;
+
+ if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
+ !phba->cfg_fof)
+ return false;
+
+ spin_lock_irqsave(&phba->devicelock, flags);
+
+ /* Check to see if the lun is available. */
+ lun_info = __lpfc_get_device_data(phba,
+ &phba->luns, vport_wwpn,
+ target_wwpn, lun);
+ if (lun_info) {
+ lun_info->oas_enabled = false;
+ lun_info->priority = pri;
+ if (!lun_info->available)
+ lpfc_delete_device_data(phba, lun_info);
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ return true;
+ }
+
+ spin_unlock_irqrestore(&phba->devicelock, flags);
+ return false;
+}
+
+static int
+lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
+{
+ return SCSI_MLQUEUE_HOST_BUSY;
+}
+
+static int
+lpfc_no_handler(struct scsi_cmnd *cmnd)
+{
+ return FAILED;
+}
+
+static int
+lpfc_no_slave(struct scsi_device *sdev)
+{
+ return -ENODEV;
+}
+
+struct scsi_host_template lpfc_template_nvme = {
+ .module = THIS_MODULE,
+ .name = LPFC_DRIVER_NAME,
+ .proc_name = LPFC_DRIVER_NAME,
+ .info = lpfc_info,
+ .queuecommand = lpfc_no_command,
+ .eh_abort_handler = lpfc_no_handler,
+ .eh_device_reset_handler = lpfc_no_handler,
+ .eh_target_reset_handler = lpfc_no_handler,
+ .eh_bus_reset_handler = lpfc_no_handler,
+ .eh_host_reset_handler = lpfc_no_handler,
+ .slave_alloc = lpfc_no_slave,
+ .slave_configure = lpfc_no_slave,
+ .scan_finished = lpfc_scan_finished,
+ .this_id = -1,
+ .sg_tablesize = 1,
+ .cmd_per_lun = 1,
+ .shost_attrs = lpfc_hba_attrs,
+ .max_sectors = 0xFFFF,
+ .vendor_id = LPFC_NL_VENDOR_ID,
+ .track_queue_depth = 0,
+};
+
+struct scsi_host_template lpfc_template_no_hr = {
+ .module = THIS_MODULE,
+ .name = LPFC_DRIVER_NAME,
+ .proc_name = LPFC_DRIVER_NAME,
+ .info = lpfc_info,
+ .queuecommand = lpfc_queuecommand,
+ .eh_timed_out = fc_eh_timed_out,
+ .eh_abort_handler = lpfc_abort_handler,
+ .eh_device_reset_handler = lpfc_device_reset_handler,
+ .eh_target_reset_handler = lpfc_target_reset_handler,
+ .eh_bus_reset_handler = lpfc_bus_reset_handler,
+ .slave_alloc = lpfc_slave_alloc,
+ .slave_configure = lpfc_slave_configure,
+ .slave_destroy = lpfc_slave_destroy,
+ .scan_finished = lpfc_scan_finished,
+ .this_id = -1,
+ .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
+ .cmd_per_lun = LPFC_CMD_PER_LUN,
+ .shost_attrs = lpfc_hba_attrs,
+ .max_sectors = 0xFFFFFFFF,
+ .vendor_id = LPFC_NL_VENDOR_ID,
+ .change_queue_depth = scsi_change_queue_depth,
+ .track_queue_depth = 1,
+};
+
+struct scsi_host_template lpfc_template = {
+ .module = THIS_MODULE,
+ .name = LPFC_DRIVER_NAME,
+ .proc_name = LPFC_DRIVER_NAME,
+ .info = lpfc_info,
+ .queuecommand = lpfc_queuecommand,
+ .eh_timed_out = fc_eh_timed_out,
+ .eh_abort_handler = lpfc_abort_handler,
+ .eh_device_reset_handler = lpfc_device_reset_handler,
+ .eh_target_reset_handler = lpfc_target_reset_handler,
+ .eh_bus_reset_handler = lpfc_bus_reset_handler,
+ .eh_host_reset_handler = lpfc_host_reset_handler,
+ .slave_alloc = lpfc_slave_alloc,
+ .slave_configure = lpfc_slave_configure,
+ .slave_destroy = lpfc_slave_destroy,
+ .scan_finished = lpfc_scan_finished,
+ .this_id = -1,
+ .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
+ .cmd_per_lun = LPFC_CMD_PER_LUN,
+ .shost_attrs = lpfc_hba_attrs,
+ .max_sectors = 0xFFFF,
+ .vendor_id = LPFC_NL_VENDOR_ID,
+ .change_queue_depth = scsi_change_queue_depth,
+ .track_queue_depth = 1,
+};
+
+struct scsi_host_template lpfc_vport_template = {
+ .module = THIS_MODULE,
+ .name = LPFC_DRIVER_NAME,
+ .proc_name = LPFC_DRIVER_NAME,
+ .info = lpfc_info,
+ .queuecommand = lpfc_queuecommand,
+ .eh_timed_out = fc_eh_timed_out,
+ .eh_abort_handler = lpfc_abort_handler,
+ .eh_device_reset_handler = lpfc_device_reset_handler,
+ .eh_target_reset_handler = lpfc_target_reset_handler,
+ .slave_alloc = lpfc_slave_alloc,
+ .slave_configure = lpfc_slave_configure,
+ .slave_destroy = lpfc_slave_destroy,
+ .scan_finished = lpfc_scan_finished,
+ .this_id = -1,
+ .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
+ .cmd_per_lun = LPFC_CMD_PER_LUN,
+ .shost_attrs = lpfc_vport_attrs,
+ .max_sectors = 0xFFFF,
+ .change_queue_depth = scsi_change_queue_depth,
+ .track_queue_depth = 1,
+};