/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
- * Copyright (C) 2004-2008 Emulex. All rights reserved. *
+ * Copyright (C) 2004-2009 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
*******************************************************************/
-
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
+#include <asm/unaligned.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_scsi.h"
#define LPFC_RESET_WAIT 2
#define LPFC_ABORT_WAIT 2
+int _dump_buf_done;
+
+static char *dif_op_str[] = {
+ "SCSI_PROT_NORMAL",
+ "SCSI_PROT_READ_INSERT",
+ "SCSI_PROT_WRITE_STRIP",
+ "SCSI_PROT_READ_STRIP",
+ "SCSI_PROT_WRITE_INSERT",
+ "SCSI_PROT_READ_PASS",
+ "SCSI_PROT_WRITE_PASS",
+};
+static void
+lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
+static void
+lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
+
+static void
+lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
+{
+ void *src, *dst;
+ struct scatterlist *sgde = scsi_sglist(cmnd);
+
+ if (!_dump_buf_data) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
+ __func__);
+ return;
+ }
+
+
+ if (!sgde) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9051 BLKGRD: ERROR: data scatterlist is null\n");
+ return;
+ }
+
+ dst = (void *) _dump_buf_data;
+ while (sgde) {
+ src = sg_virt(sgde);
+ memcpy(dst, src, sgde->length);
+ dst += sgde->length;
+ sgde = sg_next(sgde);
+ }
+}
+
+static void
+lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
+{
+ void *src, *dst;
+ struct scatterlist *sgde = scsi_prot_sglist(cmnd);
+
+ if (!_dump_buf_dif) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
+ __func__);
+ return;
+ }
+
+ if (!sgde) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9053 BLKGRD: ERROR: prot scatterlist is null\n");
+ return;
+ }
+
+ dst = _dump_buf_dif;
+ while (sgde) {
+ src = sg_virt(sgde);
+ memcpy(dst, src, sgde->length);
+ dst += sgde->length;
+ sgde = sg_next(sgde);
+ }
+}
+
+/**
+ * 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_scsi_buf *lpfc_cmd)
+{
+ struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
+ 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.
+ * lpfc_update_stats - Update statistical data for the command completion
* @phba: Pointer to HBA object.
* @lpfc_cmd: lpfc scsi command object pointer.
*
}
/**
- * lpfc_send_sdev_queuedepth_change_event: Posts a queuedepth change
- * event.
+ * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
* @phba: Pointer to HBA context object.
* @vport: Pointer to vport object.
* @ndlp: Pointer to FC node associated with the target.
}
/**
- * lpfc_rampdown_queue_depth: Post RAMP_DOWN_QUEUE event to worker thread.
+ * lpfc_change_queue_depth - Alter scsi device queue depth
+ * @sdev: Pointer the scsi device on which to change the queue depth.
+ * @qdepth: New queue depth to set the sdev to.
+ * @reason: The reason for the queue depth change.
+ *
+ * This function is called by the midlayer and the LLD to alter the queue
+ * depth for a scsi device. This function sets the queue depth to the new
+ * value and sends an event out to log the queue depth change.
+ **/
+int
+lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_rport_data *rdata;
+ unsigned long new_queue_depth, old_queue_depth;
+
+ old_queue_depth = sdev->queue_depth;
+ scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
+ new_queue_depth = sdev->queue_depth;
+ rdata = sdev->hostdata;
+ if (rdata)
+ lpfc_send_sdev_queuedepth_change_event(phba, vport,
+ rdata->pnode, sdev->lun,
+ old_queue_depth,
+ new_queue_depth);
+ return sdev->queue_depth;
+}
+
+/**
+ * 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.
}
/**
- * lpfc_rampup_queue_depth: Post RAMP_UP_QUEUE event for worker thread.
+ * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread
* @phba: The Hba for which this call is being executed.
*
* This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine
**/
static inline void
lpfc_rampup_queue_depth(struct lpfc_vport *vport,
- struct scsi_device *sdev)
+ uint32_t queue_depth)
{
unsigned long flags;
struct lpfc_hba *phba = vport->phba;
uint32_t evt_posted;
atomic_inc(&phba->num_cmd_success);
- if (vport->cfg_lun_queue_depth <= sdev->queue_depth)
+ if (vport->cfg_lun_queue_depth <= queue_depth)
return;
spin_lock_irqsave(&phba->hbalock, flags);
- if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) ||
- ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) {
+ if (time_before(jiffies,
+ phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) ||
+ time_before(jiffies,
+ phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) {
spin_unlock_irqrestore(&phba->hbalock, flags);
return;
}
}
/**
- * lpfc_ramp_down_queue_handler: WORKER_RAMP_DOWN_QUEUE event handler.
+ * 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
struct lpfc_vport **vports;
struct Scsi_Host *shost;
struct scsi_device *sdev;
- unsigned long new_queue_depth, old_queue_depth;
+ unsigned long new_queue_depth;
unsigned long num_rsrc_err, num_cmd_success;
int i;
- struct lpfc_rport_data *rdata;
num_rsrc_err = atomic_read(&phba->num_rsrc_err);
num_cmd_success = atomic_read(&phba->num_cmd_success);
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
- for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
shost = lpfc_shost_from_vport(vports[i]);
shost_for_each_device(sdev, shost) {
new_queue_depth =
else
new_queue_depth = sdev->queue_depth -
new_queue_depth;
- old_queue_depth = sdev->queue_depth;
- if (sdev->ordered_tags)
- scsi_adjust_queue_depth(sdev,
- MSG_ORDERED_TAG,
- new_queue_depth);
- else
- scsi_adjust_queue_depth(sdev,
- MSG_SIMPLE_TAG,
- new_queue_depth);
- rdata = sdev->hostdata;
- if (rdata)
- lpfc_send_sdev_queuedepth_change_event(
- phba, vports[i],
- rdata->pnode,
- sdev->lun, old_queue_depth,
- new_queue_depth);
+ lpfc_change_queue_depth(sdev, new_queue_depth,
+ SCSI_QDEPTH_DEFAULT);
}
}
lpfc_destroy_vport_work_array(phba, vports);
}
/**
- * lpfc_ramp_up_queue_handler: WORKER_RAMP_UP_QUEUE event handler.
+ * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler
* @phba: The Hba for which this call is being executed.
*
* This routine is called to process WORKER_RAMP_UP_QUEUE event for worker
struct Scsi_Host *shost;
struct scsi_device *sdev;
int i;
- struct lpfc_rport_data *rdata;
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
- for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+ 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 (vports[i]->cfg_lun_queue_depth <=
sdev->queue_depth)
continue;
- if (sdev->ordered_tags)
- scsi_adjust_queue_depth(sdev,
- MSG_ORDERED_TAG,
- sdev->queue_depth+1);
- else
- scsi_adjust_queue_depth(sdev,
- MSG_SIMPLE_TAG,
- sdev->queue_depth+1);
- rdata = sdev->hostdata;
- if (rdata)
- lpfc_send_sdev_queuedepth_change_event(
- phba, vports[i],
- rdata->pnode,
- sdev->lun,
- sdev->queue_depth - 1,
- sdev->queue_depth);
+ lpfc_change_queue_depth(sdev,
+ sdev->queue_depth+1,
+ SCSI_QDEPTH_RAMP_UP);
}
}
lpfc_destroy_vport_work_array(phba, vports);
}
/**
- * lpfc_scsi_dev_block: set all scsi hosts to block state.
+ * 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
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
- for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+ 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));
}
/**
- * lpfc_new_scsi_buf: Scsi buffer allocator.
+ * 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, which 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.
+ * 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:
- * NULL - Error
- * Pointer to lpfc_scsi_buf data structure - Success
+ * int - number of scsi buffers that were allocated.
+ * 0 = failure, less than num_to_alloc is a partial failure.
**/
-static struct lpfc_scsi_buf *
-lpfc_new_scsi_buf(struct lpfc_vport *vport)
+static int
+lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_scsi_buf *psb;
dma_addr_t pdma_phys_fcp_rsp;
dma_addr_t pdma_phys_bpl;
uint16_t iotag;
+ int bcnt;
- psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
- if (!psb)
- return NULL;
+ for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
+ psb = kzalloc(sizeof(struct lpfc_scsi_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 = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
+ GFP_KERNEL, &psb->dma_handle);
+ if (!psb->data) {
+ kfree(psb);
+ break;
+ }
+
+ /* Initialize virtual ptrs to dma_buf region. */
+ memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
+
+ /* Allocate iotag for psb->cur_iocbq. */
+ iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
+ if (iotag == 0) {
+ pci_pool_free(phba->lpfc_scsi_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->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
+ sizeof(struct fcp_rsp);
+
+ /* Initialize local short-hand pointers. */
+ bpl = psb->fcp_bpl;
+ pdma_phys_fcp_cmd = psb->dma_handle;
+ pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
+ pdma_phys_bpl = 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 responce 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_bpl);
+ iocb->un.fcpi64.bdl.addrHigh =
+ putPaddrHigh(pdma_phys_bpl);
+ iocb->ulpBdeCount = 1;
+ iocb->ulpLe = 1;
+ }
+ iocb->ulpClass = CLASS3;
+ psb->status = IOSTAT_SUCCESS;
+ /* Put it back into the SCSI buffer list */
+ lpfc_release_scsi_buf_s3(phba, psb);
- /*
- * 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 = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL,
- &psb->dma_handle);
- if (!psb->data) {
- kfree(psb);
- return NULL;
}
- /* Initialize virtual ptrs to dma_buf region. */
- memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
+ return bcnt;
+}
- /* Allocate iotag for psb->cur_iocbq. */
- iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
- if (iotag == 0) {
- pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
- psb->data, psb->dma_handle);
- kfree (psb);
- return NULL;
+/**
+ * lpfc_sli4_fcp_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 aborted xri.
+ **/
+void
+lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
+ struct sli4_wcqe_xri_aborted *axri)
+{
+ uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
+ struct lpfc_scsi_buf *psb, *next_psb;
+ unsigned long iflag = 0;
+
+ spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, iflag);
+ list_for_each_entry_safe(psb, next_psb,
+ &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
+ if (psb->cur_iocbq.sli4_xritag == xri) {
+ list_del(&psb->list);
+ psb->exch_busy = 0;
+ psb->status = IOSTAT_SUCCESS;
+ spin_unlock_irqrestore(
+ &phba->sli4_hba.abts_scsi_buf_list_lock,
+ iflag);
+ lpfc_release_scsi_buf_s4(phba, psb);
+ return;
+ }
}
- psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
+ spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
+ iflag);
+}
- psb->fcp_cmnd = psb->data;
- psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
- psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
- sizeof(struct fcp_rsp);
+/**
+ * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine walks the list of scsi buffers that have been allocated and
+ * repost them to the HBA by using SGL block post. This is needed after a
+ * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
+ * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
+ * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
+ *
+ * Returns: 0 = success, non-zero failure.
+ **/
+int
+lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
+{
+ struct lpfc_scsi_buf *psb;
+ int index, status, bcnt = 0, rcnt = 0, rc = 0;
+ LIST_HEAD(sblist);
+
+ for (index = 0; index < phba->sli4_hba.scsi_xri_cnt; index++) {
+ psb = phba->sli4_hba.lpfc_scsi_psb_array[index];
+ if (psb) {
+ /* Remove from SCSI buffer list */
+ list_del(&psb->list);
+ /* Add it to a local SCSI buffer list */
+ list_add_tail(&psb->list, &sblist);
+ if (++rcnt == LPFC_NEMBED_MBOX_SGL_CNT) {
+ bcnt = rcnt;
+ rcnt = 0;
+ }
+ } else
+ /* A hole present in the XRI array, need to skip */
+ bcnt = rcnt;
- /* Initialize local short-hand pointers. */
- bpl = psb->fcp_bpl;
- pdma_phys_fcp_cmd = psb->dma_handle;
- pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
- pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
- sizeof(struct fcp_rsp);
+ if (index == phba->sli4_hba.scsi_xri_cnt - 1)
+ /* End of XRI array for SCSI buffer, complete */
+ bcnt = rcnt;
- /*
- * 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);
+ /* Continue until collect up to a nembed page worth of sgls */
+ if (bcnt == 0)
+ continue;
+ /* Now, post the SCSI buffer list sgls as a block */
+ status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt);
+ /* Reset SCSI buffer count for next round of posting */
+ bcnt = 0;
+ while (!list_empty(&sblist)) {
+ list_remove_head(&sblist, psb, struct lpfc_scsi_buf,
+ list);
+ if (status) {
+ /* Put this back on the abort scsi list */
+ psb->exch_busy = 1;
+ rc++;
+ } else {
+ psb->exch_busy = 0;
+ psb->status = IOSTAT_SUCCESS;
+ }
+ /* Put it back into the SCSI buffer list */
+ lpfc_release_scsi_buf_s4(phba, psb);
+ }
+ }
+ return rc;
+}
- /*
- * 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) {
- /* fill in immediate fcp command BDE */
- iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
+/**
+ * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 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-4 interface spec,
+ * the scsi buffer contains all the necessary information needed to initiate
+ * a SCSI I/O.
+ *
+ * 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_s4(struct lpfc_vport *vport, int num_to_alloc)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_scsi_buf *psb;
+ struct sli4_sge *sgl;
+ IOCB_t *iocb;
+ dma_addr_t pdma_phys_fcp_cmd;
+ dma_addr_t pdma_phys_fcp_rsp;
+ dma_addr_t pdma_phys_bpl, pdma_phys_bpl1;
+ uint16_t iotag, last_xritag = NO_XRI;
+ int status = 0, index;
+ int bcnt;
+ int non_sequential_xri = 0;
+ int rc = 0;
+ LIST_HEAD(sblist);
+
+ for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
+ psb = kzalloc(sizeof(struct lpfc_scsi_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 = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
+ GFP_KERNEL, &psb->dma_handle);
+ if (!psb->data) {
+ kfree(psb);
+ break;
+ }
+
+ /* Initialize virtual ptrs to dma_buf region. */
+ memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
+
+ /* Allocate iotag for psb->cur_iocbq. */
+ iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
+ if (iotag == 0) {
+ kfree(psb);
+ break;
+ }
+
+ psb->cur_iocbq.sli4_xritag = lpfc_sli4_next_xritag(phba);
+ if (psb->cur_iocbq.sli4_xritag == NO_XRI) {
+ pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
+ psb->data, psb->dma_handle);
+ kfree(psb);
+ break;
+ }
+ if (last_xritag != NO_XRI
+ && psb->cur_iocbq.sli4_xritag != (last_xritag+1)) {
+ non_sequential_xri = 1;
+ } else
+ list_add_tail(&psb->list, &sblist);
+ last_xritag = psb->cur_iocbq.sli4_xritag;
+
+ index = phba->sli4_hba.scsi_xri_cnt++;
+ psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
+
+ psb->fcp_bpl = psb->data;
+ psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size)
+ - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
+ psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd +
+ sizeof(struct fcp_cmnd));
+
+ /* Initialize local short-hand pointers. */
+ sgl = (struct sli4_sge *)psb->fcp_bpl;
+ pdma_phys_bpl = psb->dma_handle;
+ pdma_phys_fcp_cmd =
+ (psb->dma_handle + phba->cfg_sg_dma_buf_size)
+ - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
+ pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
+
+ /*
+ * 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.
+ */
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
+ 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 */
+ sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
+ sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
+ 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_scsi_buf, initialize it with all known data now.
+ */
+ iocb = &psb->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 = offsetof(IOCB_t,
- unsli3.fcp_ext.icd);
- iocb->un.fcpi64.bdl.addrHigh = 0;
- iocb->ulpBdeCount = 0;
- iocb->ulpLe = 0;
- /* fill in responce 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_bpl);
- iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_bpl);
+ 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 (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
+ pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE;
+ else
+ pdma_phys_bpl1 = 0;
+ psb->dma_phys_bpl = pdma_phys_bpl;
+ phba->sli4_hba.lpfc_scsi_psb_array[index] = psb;
+ if (non_sequential_xri) {
+ status = lpfc_sli4_post_sgl(phba, pdma_phys_bpl,
+ pdma_phys_bpl1,
+ psb->cur_iocbq.sli4_xritag);
+ if (status) {
+ /* Put this back on the abort scsi list */
+ psb->exch_busy = 1;
+ rc++;
+ } else {
+ psb->exch_busy = 0;
+ psb->status = IOSTAT_SUCCESS;
+ }
+ /* Put it back into the SCSI buffer list */
+ lpfc_release_scsi_buf_s4(phba, psb);
+ break;
+ }
+ }
+ if (bcnt) {
+ status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt);
+ /* Reset SCSI buffer count for next round of posting */
+ while (!list_empty(&sblist)) {
+ list_remove_head(&sblist, psb, struct lpfc_scsi_buf,
+ list);
+ if (status) {
+ /* Put this back on the abort scsi list */
+ psb->exch_busy = 1;
+ rc++;
+ } else {
+ psb->exch_busy = 0;
+ psb->status = IOSTAT_SUCCESS;
+ }
+ /* Put it back into the SCSI buffer list */
+ lpfc_release_scsi_buf_s4(phba, psb);
+ }
}
- iocb->ulpClass = CLASS3;
- return psb;
+ return bcnt + non_sequential_xri - rc;
}
/**
- * lpfc_get_scsi_buf: Get a scsi buffer from lpfc_scsi_buf_list list of Hba.
- * @phba: The Hba for which this call is being executed.
+ * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
+ * @vport: The virtual port for which this call being executed.
+ * @num_to_allocate: The requested number of buffers to allocate.
+ *
+ * This routine wraps the actual SCSI buffer allocator function pointer from
+ * the lpfc_hba struct.
+ *
+ * Return codes:
+ * int - number of scsi buffers that were allocated.
+ * 0 = failure, less than num_to_alloc is a partial failure.
+ **/
+static inline int
+lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
+{
+ return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc);
+}
+
+/**
+ * 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.
if (lpfc_cmd) {
lpfc_cmd->seg_cnt = 0;
lpfc_cmd->nonsg_phys = 0;
+ lpfc_cmd->prot_seg_cnt = 0;
}
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
return lpfc_cmd;
}
/**
- * lpfc_release_scsi_buf: Return a scsi buffer back to hba lpfc_scsi_buf_list list.
+ * 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.
*
* lpfc_scsi_buf_list list.
**/
static void
-lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
+lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
{
unsigned long iflag = 0;
}
/**
- * lpfc_scsi_prep_dma_buf: Routine to do DMA mapping for scsi buffer.
+ * 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 @phba
+ * lpfc_scsi_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_scsi_buf *psb)
+{
+ unsigned long iflag = 0;
+
+ if (psb->exch_busy) {
+ spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
+ iflag);
+ psb->pCmd = NULL;
+ list_add_tail(&psb->list,
+ &phba->sli4_hba.lpfc_abts_scsi_buf_list);
+ spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
+ iflag);
+ } else {
+
+ spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
+ psb->pCmd = NULL;
+ list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list);
+ spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
+ }
+}
+
+/**
+ * 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_scsi_buf *psb)
+{
+
+ 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. This routine scans through sg elements and format the
- * bdea. This routine also initializes all IOCB fields which are dependent on
- * scsi command request buffer.
+ * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
+ * through sg elements and format the bdea. 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(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
+lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
{
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
struct scatterlist *sgel = NULL;
lpfc_cmd->seg_cnt = nseg;
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
- printk(KERN_ERR "%s: Too many sg segments from "
- "dma_map_sg. Config %d, seg_cnt %d",
+ 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);
scsi_dma_unmap(scsi_cmnd);
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) &&
nseg <= LPFC_EXT_DATA_BDE_COUNT) {
data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
data_bde->tus.f.bdeSize = sg_dma_len(sgel);
* 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) {
+ if (phba->sli_rev == 3 &&
+ !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
/*
* The extended IOCB format can only fit 3 BDE or a BPL.
((num_bde + 2) * sizeof(struct ulp_bde64));
}
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;
}
+/*
+ * Given a scsi cmnd, determine the BlockGuard profile to be used
+ * with the cmd
+ */
+static int
+lpfc_sc_to_sli_prof(struct lpfc_hba *phba, struct scsi_cmnd *sc)
+{
+ uint8_t guard_type = scsi_host_get_guard(sc->device->host);
+ uint8_t ret_prof = LPFC_PROF_INVALID;
+
+ if (guard_type == SHOST_DIX_GUARD_IP) {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ ret_prof = LPFC_PROF_AST2;
+ break;
+
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ ret_prof = LPFC_PROF_A1;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ ret_prof = LPFC_PROF_AST1;
+ break;
+
+ case SCSI_PROT_NORMAL:
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9063 BLKGRD:Bad op/guard:%d/%d combination\n",
+ scsi_get_prot_op(sc), guard_type);
+ break;
+
+ }
+ } else if (guard_type == SHOST_DIX_GUARD_CRC) {
+ switch (scsi_get_prot_op(sc)) {
+ case SCSI_PROT_READ_STRIP:
+ case SCSI_PROT_WRITE_INSERT:
+ ret_prof = LPFC_PROF_A1;
+ break;
+
+ case SCSI_PROT_READ_PASS:
+ case SCSI_PROT_WRITE_PASS:
+ ret_prof = LPFC_PROF_C1;
+ break;
+
+ case SCSI_PROT_READ_INSERT:
+ case SCSI_PROT_WRITE_STRIP:
+ case SCSI_PROT_NORMAL:
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9075 BLKGRD: Bad op/guard:%d/%d combination\n",
+ scsi_get_prot_op(sc), guard_type);
+ break;
+ }
+ } else {
+ /* unsupported format */
+ BUG();
+ }
+
+ return ret_prof;
+}
+
+struct scsi_dif_tuple {
+ __be16 guard_tag; /* Checksum */
+ __be16 app_tag; /* Opaque storage */
+ __be32 ref_tag; /* Target LBA or indirect LBA */
+};
+
+static inline unsigned
+lpfc_cmd_blksize(struct scsi_cmnd *sc)
+{
+ return sc->device->sector_size;
+}
+
/**
- * 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.
+ * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command
+ * @sc: in: SCSI command
+ * @apptagmask: out: app tag mask
+ * @apptagval: out: app tag value
+ * @reftag: out: ref tag (reference tag)
+ *
+ * Description:
+ * Extract DIF parameters from the command if possible. Otherwise,
+ * use default parameters.
*
- * 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_scsi_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;
+static inline void
+lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask,
+ uint16_t *apptagval, uint32_t *reftag)
+{
+ struct scsi_dif_tuple *spt;
+ unsigned char op = scsi_get_prot_op(sc);
+ unsigned int protcnt = scsi_prot_sg_count(sc);
+ static int cnt;
- /* 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;
+ if (protcnt && (op == SCSI_PROT_WRITE_STRIP ||
+ op == SCSI_PROT_WRITE_PASS)) {
+
+ cnt++;
+ spt = page_address(sg_page(scsi_prot_sglist(sc))) +
+ scsi_prot_sglist(sc)[0].offset;
+ *apptagmask = 0;
+ *apptagval = 0;
+ *reftag = cpu_to_be32(spt->ref_tag);
+
+ } else {
+ /* SBC defines ref tag to be lower 32bits of LBA */
+ *reftag = (uint32_t) (0xffffffff & scsi_get_lba(sc));
+ *apptagmask = 0;
+ *apptagval = 0;
+ }
+}
+
+/*
+ * This function sets up 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_1 |
+ * +-------------------------+
+ * | Data BDE |
+ * +-------------------------+
+ * |more Data BDE's ... (opt)|
+ * +-------------------------+
+ *
+ * @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
+ *
+ * Note: Data s/g buffers have been dma mapped
+ */
+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_pde *pde1 = NULL;
+ dma_addr_t physaddr;
+ int i = 0, num_bde = 0;
+ int datadir = sc->sc_data_direction;
+ int prof = LPFC_PROF_INVALID;
+ unsigned blksize;
+ uint32_t reftag;
+ uint16_t apptagmask, apptagval;
+
+ pde1 = (struct lpfc_pde *) bpl;
+ prof = lpfc_sc_to_sli_prof(phba, sc);
+
+ if (prof == LPFC_PROF_INVALID)
+ goto out;
+
+ /* extract some info from the scsi command for PDE1*/
+ blksize = lpfc_cmd_blksize(sc);
+ lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag);
+
+ /* setup PDE1 with what we have */
+ lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize,
+ BG_EC_STOP_ERR);
+ lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag);
+
+ 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;
+}
+
+/*
+ * This function sets up buffer list for protection groups of
+ * type LPFC_PG_TYPE_DIF_BUF
+ *
+ * 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_1 |
+ * +-------------------------+
+ * | PDE_3 (Prot BDE) |
+ * +-------------------------+
+ * | Data BDE |
+ * +-------------------------+
+ * |more Data BDE's ... (opt)|
+ * +-------------------------+
+ * start of new prot group --> | PDE_1 |
+ * +-------------------------+
+ * | ... |
+ * +-------------------------+
+ *
+ * @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
+ *
+ * Note: It is assumed that both data and protection s/g buffers have been
+ * mapped for DMA
+ */
+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_pde *pde1 = NULL;
+ struct ulp_bde64 *prot_bde = NULL;
+ dma_addr_t dataphysaddr, protphysaddr;
+ unsigned short curr_data = 0, curr_prot = 0;
+ unsigned int split_offset, protgroup_len;
+ unsigned int protgrp_blks, protgrp_bytes;
+ unsigned int remainder, subtotal;
+ int prof = LPFC_PROF_INVALID;
+ int datadir = sc->sc_data_direction;
+ unsigned char pgdone = 0, alldone = 0;
+ unsigned blksize;
+ uint32_t reftag;
+ uint16_t apptagmask, apptagval;
+ 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=0x%p prot=0x%p\n",
+ sgpe, sgde);
+ return 0;
+ }
+
+ prof = lpfc_sc_to_sli_prof(phba, sc);
+ if (prof == LPFC_PROF_INVALID)
+ goto out;
+
+ /* extract some info from the scsi command for PDE1*/
+ blksize = lpfc_cmd_blksize(sc);
+ lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag);
+
+ split_offset = 0;
+ do {
+ /* setup the first PDE_1 */
+ pde1 = (struct lpfc_pde *) bpl;
+
+ lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize,
+ BG_EC_STOP_ERR);
+ lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag);
+
+ num_bde++;
+ bpl++;
+
+ /* setup the first BDE that points to protection buffer */
+ prot_bde = (struct ulp_bde64 *) bpl;
+ protphysaddr = sg_dma_address(sgpe);
+ prot_bde->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
+ prot_bde->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
+ protgroup_len = sg_dma_len(sgpe);
+
+
+ /* must be integer multiple of the DIF block length */
+ BUG_ON(protgroup_len % 8);
+
+ protgrp_blks = protgroup_len / 8;
+ protgrp_bytes = protgrp_blks * blksize;
+
+ prot_bde->tus.f.bdeSize = protgroup_len;
+ if (datadir == DMA_TO_DEVICE)
+ prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ else
+ prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
+ prot_bde->tus.w = le32_to_cpu(bpl->tus.w);
+
+ 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) {
+ 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);
+ }
+
+ /* 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;
+}
+/*
+ * Given a SCSI command that supports DIF, determine composition of protection
+ * groups involved in setting up buffer lists
+ *
+ * Returns:
+ * for DIF (for both read and write)
+ * */
+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:
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9021 Unsupported protection op:%d\n", op);
+ break;
+ }
+
+ return ret;
+}
+
+/*
+ * 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
+ */
+static int
+lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba,
+ struct lpfc_scsi_buf *lpfc_cmd)
+{
+ struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
+ struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
+ struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
+ 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 diflen, fcpdl;
+ unsigned blksize;
+
+ /*
+ * 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;
+ if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9067 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);
+ scsi_dma_unmap(scsi_cmnd);
+ return 1;
+ }
+
+ prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
+
+ switch (prot_group_type) {
+ case LPFC_PG_TYPE_NO_DIF:
+ 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)
+ 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;
+ if (lpfc_cmd->prot_seg_cnt
+ > phba->cfg_prot_sg_seg_cnt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9068 BLKGRD: %s: Too many prot sg "
+ "segments from dma_map_sg. Config %d,"
+ "prot_seg_cnt %d\n", __func__,
+ phba->cfg_prot_sg_seg_cnt,
+ lpfc_cmd->prot_seg_cnt);
+ dma_unmap_sg(&phba->pcidev->dev,
+ scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ datadir);
+ scsi_dma_unmap(scsi_cmnd);
+ return 1;
+ }
+
+ 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)
+ goto err;
+ break;
+ }
+ case LPFC_PG_TYPE_INVALID:
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9022 Unexpected protection group %i\n",
+ prot_group_type);
+ return 1;
+ }
+ }
+
+ /*
+ * 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 = scsi_bufflen(scsi_cmnd);
+
+ if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) {
+ /*
+ * We are in DIF Type 1 mode
+ * Every data block has a 8 byte DIF (trailer)
+ * attached to it. Must ajust FCP data length
+ */
+ blksize = lpfc_cmd_blksize(scsi_cmnd);
+ diflen = (fcpdl / blksize) * 8;
+ fcpdl += diflen;
+ }
+ 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;
+
+ return 0;
+err:
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "9023 Could not setup all needed BDE's"
+ "prot_group_type=%d, num_bde=%d\n",
+ prot_group_type, num_bde);
+ return 1;
+}
+
+/*
+ * 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_scsi_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;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd"
+ " 0x%x lba 0x%llx blk cnt 0x%x "
+ "bgstat=0x%x bghm=0x%x\n",
+ cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd),
+ blk_rq_sectors(cmd->request), bgstat, bghm);
+
+ spin_lock(&_dump_buf_lock);
+ if (!_dump_buf_done) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
+ " Data for %u blocks to debugfs\n",
+ (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
+ lpfc_debug_save_data(phba, cmd);
+
+ /* If we have a prot sgl, save the DIF buffer */
+ if (lpfc_prot_group_type(phba, cmd) ==
+ LPFC_PG_TYPE_DIF_BUF) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
+ "Saving DIF for %u blocks to debugfs\n",
+ (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
+ lpfc_debug_save_dif(phba, cmd);
+ }
+
+ _dump_buf_done = 1;
+ }
+ spin_unlock(&_dump_buf_lock);
+
+ if (lpfc_bgs_get_invalid_prof(bgstat)) {
+ cmd->result = ScsiResult(DID_ERROR, 0);
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid"
+ " BlockGuard profile. bgstat:0x%x\n",
+ bgstat);
+ ret = (-1);
+ goto out;
+ }
+
+ if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
+ cmd->result = ScsiResult(DID_ERROR, 0);
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: "
+ "Invalid BlockGuard DIF Block. bgstat:0x%x\n",
+ bgstat);
+ 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
+ | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
+ phba->bg_guard_err_cnt++;
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9055 BLKGRD: guard_tag error\n");
+ }
+
+ 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
+ | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
+
+ phba->bg_reftag_err_cnt++;
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9056 BLKGRD: ref_tag error\n");
+ }
+
+ 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
+ | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
+
+ phba->bg_apptag_err_cnt++;
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9061 BLKGRD: app_tag error\n");
+ }
+
+ 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
+ */
+ cmd->sense_buffer[8] = 0; /* Information */
+ cmd->sense_buffer[9] = 0xa; /* Add. length */
+ bghm /= cmd->device->sector_size;
+
+ failing_sector = scsi_get_lba(cmd);
+ failing_sector += bghm;
+
+ put_unaligned_be64(failing_sector, &cmd->sense_buffer[10]);
+ }
+
+ if (!ret) {
+ /* No error was reported - problem in FW? */
+ cmd->result = ScsiResult(DID_ERROR, 0);
+ lpfc_printf_log(phba, KERN_ERR, LOG_BG,
+ "9057 BLKGRD: no errors reported!\n");
+ }
+
+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:
+ * 1 - Error
+ * 0 - Success
+ **/
+static int
+lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_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->fcp_bpl;
+ 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;
+
+ /*
+ * 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))
+ 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 = nseg;
+ if (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);
+ scsi_dma_unmap(scsi_cmnd);
+ return 1;
+ }
+
+ /*
+ * 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.
+ */
+ scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
+ 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));
+ if ((num_bde + 1) == nseg)
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ else
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+ 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;
+ sgl++;
+ }
+ } 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);
+ }
+
+ /*
+ * 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);
+ return 0;
+}
+
+/**
+ * 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_scsi_buf *lpfc_cmd)
+{
+ return phba->lpfc_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_scsi_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 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 =
}
/**
- * lpfc_scsi_unprep_dma_buf: Routine to un-map DMA mapping of scatter gather.
- * @phba: The Hba for which this call is being executed.
+ * 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.
+ * field of @lpfc_cmd for device with SLI-3 interface spec.
**/
static void
-lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb)
+lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
{
/*
* There are only two special cases to consider. (1) the scsi command
*/
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.
+ * lpfc_handler_fcp_err - FCP response handler
* @vport: The virtual port for which this call is being executed.
* @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
* @rsp_iocb: The response IOCB which contains FCP error.
goto out;
}
+ if (resp_info & RSP_LEN_VALID) {
+ rsplen = be32_to_cpu(fcprsp->rspRspLen);
+ if ((rsplen != 0 && rsplen != 4 && rsplen != 8) ||
+ (fcprsp->rspInfo3 != RSP_NO_FAILURE)) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "2719 Invalid response length: "
+ "tgt x%x lun x%x cmnd x%x rsplen x%x\n",
+ cmnd->device->id,
+ cmnd->device->lun, cmnd->cmnd[0],
+ rsplen);
+ 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)
logit = LOG_FCP;
lpfc_printf_vlog(vport, KERN_WARNING, logit,
- "0730 FCP command x%x failed: x%x SNS x%x x%x "
+ "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->rspRspLen),
fcprsp->rspInfo3);
- if (resp_info & RSP_LEN_VALID) {
- rsplen = be32_to_cpu(fcprsp->rspRspLen);
- if ((rsplen != 0 && rsplen != 4 && rsplen != 8) ||
- (fcprsp->rspInfo3 != RSP_NO_FAILURE)) {
- host_status = DID_ERROR;
- goto out;
- }
- }
-
scsi_set_resid(cmnd, 0);
if (resp_info & RESID_UNDER) {
scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
- "0716 FCP Read Underrun, expected %d, "
+ "9025 FCP Read Underrun, expected %d, "
"residual %d Data: x%x x%x x%x\n",
be32_to_cpu(fcpcmd->fcpDl),
scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
(scsi_get_resid(cmnd) != fcpi_parm)) {
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_FCP | LOG_FCP_ERROR,
- "0735 FCP Read Check Error "
+ "9026 FCP Read Check Error "
"and Underrun Data: x%x x%x x%x x%x\n",
be32_to_cpu(fcpcmd->fcpDl),
scsi_get_resid(cmnd), fcpi_parm,
(scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
< cmnd->underflow)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
- "0717 FCP command x%x residual "
+ "9027 FCP command x%x residual "
"underrun converted to error "
"Data: x%x x%x x%x\n",
cmnd->cmnd[0], scsi_bufflen(cmnd),
}
} else if (resp_info & RESID_OVER) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
- "0720 FCP command x%x residual overrun error. "
- "Data: x%x x%x \n", cmnd->cmnd[0],
+ "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;
} else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm &&
(cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
- "0734 FCP Read Check Error Data: "
+ "9029 FCP Read Check Error Data: "
"x%x x%x x%x x%x\n",
be32_to_cpu(fcpcmd->fcpDl),
be32_to_cpu(fcprsp->rspResId),
}
/**
- * lpfc_scsi_cmd_iocb_cmpl: Scsi cmnd IOCB completion routine.
+ * 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 .
+ * @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
struct lpfc_nodelist *pnode = rdata->pnode;
struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
int result;
- struct scsi_device *sdev, *tmp_sdev;
- int depth = 0;
+ struct scsi_device *tmp_sdev;
+ int depth;
unsigned long flags;
struct lpfc_fast_path_event *fast_path_evt;
+ struct Scsi_Host *shost = cmd->device->host;
+ uint32_t queue_depth, scsi_id;
lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
+ /* pick up SLI4 exhange busy status from HBA */
+ lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
+
if (pnode && NLP_CHK_NODE_ACT(pnode))
atomic_dec(&pnode->cmd_pending);
lpfc_cmd->status = IOSTAT_DEFAULT;
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
- "0729 FCP cmd x%x failed <%d/%d> "
+ "9030 FCP cmd x%x failed <%d/%d> "
"status: x%x result: x%x Data: x%x x%x\n",
cmd->cmnd[0],
cmd->device ? cmd->device->id : 0xffff,
lpfc_cmd->result == IOERR_ABORT_REQUESTED) {
cmd->result = ScsiResult(DID_REQUEUE, 0);
break;
- } /* else: fall through */
+ }
+
+ 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");
+ }
+ }
+
+ /* else: fall through */
default:
cmd->result = ScsiResult(DID_ERROR, 0);
break;
lpfc_update_stats(phba, lpfc_cmd);
result = cmd->result;
- sdev = cmd->device;
if (vport->cfg_max_scsicmpl_time &&
time_after(jiffies, lpfc_cmd->start_time +
msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
if (pnode && NLP_CHK_NODE_ACT(pnode)) {
if (pnode->cmd_qdepth >
atomic_read(&pnode->cmd_pending) &&
pnode->last_change_time = jiffies;
}
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
} else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) &&
time_after(jiffies, pnode->last_change_time +
msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
pnode->cmd_qdepth += pnode->cmd_qdepth *
LPFC_TGTQ_RAMPUP_PCENT / 100;
if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH)
pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
pnode->last_change_time = jiffies;
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
}
}
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
+
+ /* The sdev is not guaranteed to be valid post scsi_done upcall. */
+ queue_depth = cmd->device->queue_depth;
+ scsi_id = cmd->device->id;
cmd->scsi_done(cmd);
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
* If there is a thread waiting for command completion
* wake up the thread.
*/
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
lpfc_cmd->pCmd = NULL;
if (lpfc_cmd->waitq)
wake_up(lpfc_cmd->waitq);
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
lpfc_release_scsi_buf(phba, lpfc_cmd);
return;
}
-
if (!result)
- lpfc_rampup_queue_depth(vport, sdev);
-
- if (!result && pnode && NLP_CHK_NODE_ACT(pnode) &&
- ((jiffies - pnode->last_ramp_up_time) >
- LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
- ((jiffies - pnode->last_q_full_time) >
- LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
- (vport->cfg_lun_queue_depth > sdev->queue_depth)) {
- shost_for_each_device(tmp_sdev, sdev->host) {
- if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){
- if (tmp_sdev->id != sdev->id)
- continue;
- if (tmp_sdev->ordered_tags)
- scsi_adjust_queue_depth(tmp_sdev,
- MSG_ORDERED_TAG,
- tmp_sdev->queue_depth+1);
- else
- scsi_adjust_queue_depth(tmp_sdev,
- MSG_SIMPLE_TAG,
- tmp_sdev->queue_depth+1);
-
- pnode->last_ramp_up_time = jiffies;
- }
- }
- lpfc_send_sdev_queuedepth_change_event(phba, vport, pnode,
- 0xFFFFFFFF,
- sdev->queue_depth - 1, sdev->queue_depth);
- }
+ lpfc_rampup_queue_depth(vport, queue_depth);
/*
* Check for queue full. If the lun is reporting queue full, then
*/
if (result == SAM_STAT_TASK_SET_FULL && pnode &&
NLP_CHK_NODE_ACT(pnode)) {
- pnode->last_q_full_time = jiffies;
-
- shost_for_each_device(tmp_sdev, sdev->host) {
- if (tmp_sdev->id != sdev->id)
+ shost_for_each_device(tmp_sdev, shost) {
+ if (tmp_sdev->id != scsi_id)
continue;
depth = scsi_track_queue_full(tmp_sdev,
- tmp_sdev->queue_depth - 1);
- }
- /*
- * The queue depth cannot be lowered any more.
- * Modify the returned error code to store
- * the final depth value set by
- * scsi_track_queue_full.
- */
- if (depth == -1)
- depth = sdev->host->cmd_per_lun;
-
- if (depth) {
+ tmp_sdev->queue_depth-1);
+ if (depth <= 0)
+ continue;
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
"0711 detected queue full - lun queue "
"depth adjusted to %d.\n", depth);
lpfc_send_sdev_queuedepth_change_event(phba, vport,
- pnode, 0xFFFFFFFF,
- depth+1, depth);
+ pnode,
+ tmp_sdev->lun,
+ depth+1, depth);
}
}
* If there is a thread waiting for command completion
* wake up the thread.
*/
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
lpfc_cmd->pCmd = NULL;
if (lpfc_cmd->waitq)
wake_up(lpfc_cmd->waitq);
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
lpfc_release_scsi_buf(phba, lpfc_cmd);
}
/**
- * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB.
+ * 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.
*
}
/**
- * lpfc_scsi_prep_cmnd: Routine to convert scsi cmnd to FCP information unit.
+ * 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.
+ * to transfer for device with SLI3 interface spec.
**/
static void
lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
if (scsi_sg_count(scsi_cmnd)) {
if (datadir == DMA_TO_DEVICE) {
iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
- iocb_cmd->un.fcpi.fcpi_parm = 0;
- iocb_cmd->ulpPU = 0;
+ if (phba->sli_rev < LPFC_SLI_REV4) {
+ iocb_cmd->un.fcpi.fcpi_parm = 0;
+ iocb_cmd->ulpPU = 0;
+ } else
+ iocb_cmd->ulpPU = PARM_READ_CHECK;
fcp_cmnd->fcpCntl3 = WRITE_DATA;
phba->fc4OutputRequests++;
} else {
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
iocb_cmd->ulpPU = PARM_READ_CHECK;
- iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
fcp_cmnd->fcpCntl3 = READ_DATA;
phba->fc4InputRequests++;
}
fcp_cmnd->fcpCntl3 = 0;
phba->fc4ControlRequests++;
}
- if (phba->sli_rev == 3)
+ 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
}
/**
- * lpfc_scsi_prep_task_mgmt_cmnd: Convert scsi TM cmnd to FCP information unit.
+ * lpfc_scsi_prep_task_mgmt_cmnd - 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_scsi_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.
+ * This routine creates FCP information unit corresponding to @task_mgmt_cmd
+ * for device with SLI-3 interface spec.
*
* Return codes:
* 0 - Error
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)
+ 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;
* The driver will provide the timeout mechanism.
*/
piocb->ulpTimeout = 0;
- } else {
+ } 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;
}
/**
- * lpc_taskmgmt_def_cmpl: IOCB completion routine for task management command.
+ * lpfc_scsi_api_table_setup - Set up scsi api fucntion 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;
+ phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
+
+ switch (dev_grp) {
+ case LPFC_PCI_DEV_LP:
+ phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
+ phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
+ phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
+ break;
+ case LPFC_PCI_DEV_OC:
+ phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
+ phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
+ phba->lpfc_release_scsi_buf = lpfc_release_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_get_scsi_buf = lpfc_get_scsi_buf;
+ 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.
}
/**
- * lpfc_scsi_tgt_reset: Target reset handler.
- * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure
- * @vport: The virtual port for which this call is being executed.
- * @tgt_id: Target ID.
- * @lun: Lun number.
- * @rdata: Pointer to lpfc_rport_data.
- *
- * This routine issues a TARGET RESET iocb to reset a target with @tgt_id ID.
- *
- * Return Code:
- * 0x2003 - Error
- * 0x2002 - Success.
- **/
-static int
-lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport,
- unsigned tgt_id, unsigned int lun,
- struct lpfc_rport_data *rdata)
-{
- struct lpfc_hba *phba = vport->phba;
- struct lpfc_iocbq *iocbq;
- struct lpfc_iocbq *iocbqrsp;
- int ret;
- int status;
-
- if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
- return FAILED;
-
- lpfc_cmd->rdata = rdata;
- status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun,
- FCP_TARGET_RESET);
- if (!status)
- return FAILED;
-
- iocbq = &lpfc_cmd->cur_iocbq;
- iocbqrsp = lpfc_sli_get_iocbq(phba);
-
- if (!iocbqrsp)
- return FAILED;
-
- /* Issue Target Reset to TGT <num> */
- lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
- "0702 Issue Target Reset to TGT %d Data: x%x x%x\n",
- tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag);
- status = lpfc_sli_issue_iocb_wait(phba,
- &phba->sli.ring[phba->sli.fcp_ring],
- iocbq, iocbqrsp, lpfc_cmd->timeout);
- if (status != IOCB_SUCCESS) {
- if (status == IOCB_TIMEDOUT) {
- iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
- ret = TIMEOUT_ERROR;
- } else
- ret = FAILED;
- lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
- } else {
- ret = SUCCESS;
- lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4];
- lpfc_cmd->status = iocbqrsp->iocb.ulpStatus;
- if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
- (lpfc_cmd->result & IOERR_DRVR_MASK))
- lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
- }
-
- lpfc_sli_release_iocbq(phba, iocbqrsp);
- return ret;
-}
-
-/**
- * lpfc_info: Info entry point of scsi_host_template data structure.
+ * 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.
" port %s",
phba->Port);
}
+ len = strlen(lpfcinfobuf);
+ if (phba->sli4_hba.link_state.logical_speed) {
+ snprintf(lpfcinfobuf + len,
+ 384-len,
+ " Logical Link Speed: %d Mbps",
+ phba->sli4_hba.link_state.logical_speed * 10);
+ }
}
return lpfcinfobuf;
}
/**
- * lpfc_poll_rearm_time: Routine to modify fcp_poll timer of hba.
+ * 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.
}
/**
- * lpfc_poll_start_timer: Routine to start fcp_poll_timer of HBA.
+ * 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.
}
/**
- * lpfc_poll_timeout: Restart polling timer.
+ * 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
struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
- lpfc_sli_poll_fcp_ring (phba);
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
lpfc_poll_rearm_timer(phba);
}
}
/**
- * lpfc_queuecommand: Queuecommand entry point of Scsi Host Templater data
- * structure.
+ * lpfc_queuecommand - scsi_host_template queuecommand entry point
* @cmnd: Pointer to scsi_cmnd data structure.
* @done: Pointer to done routine.
*
struct Scsi_Host *shost = cmnd->device->host;
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
- struct lpfc_sli *psli = &phba->sli;
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
- struct lpfc_nodelist *ndlp = rdata->pnode;
+ struct lpfc_nodelist *ndlp;
struct lpfc_scsi_buf *lpfc_cmd;
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
int err;
cmnd->result = err;
goto out_fail_command;
}
+ ndlp = rdata->pnode;
+
+ if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
+ scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
+
+ 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
cmnd->host_scribble = (unsigned char *)lpfc_cmd;
cmnd->scsi_done = done;
- err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
+ if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
+ if (vport->phba->cfg_enable_bg) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9033 BLKGRD: rcvd protected cmd:%02x op:%02x "
+ "str=%s\n",
+ cmnd->cmnd[0], scsi_get_prot_op(cmnd),
+ dif_op_str[scsi_get_prot_op(cmnd)]);
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x "
+ "%02x %02x %02x %02x %02x\n",
+ cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2],
+ cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5],
+ cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8],
+ cmnd->cmnd[9]);
+ if (cmnd->cmnd[0] == READ_10)
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9035 BLKGRD: READ @ sector %llu, "
+ "count %u\n",
+ (unsigned long long)scsi_get_lba(cmnd),
+ blk_rq_sectors(cmnd->request));
+ else if (cmnd->cmnd[0] == WRITE_10)
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9036 BLKGRD: WRITE @ sector %llu, "
+ "count %u cmd=%p\n",
+ (unsigned long long)scsi_get_lba(cmnd),
+ blk_rq_sectors(cmnd->request),
+ cmnd);
+ }
+
+ err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
+ } else {
+ if (vport->phba->cfg_enable_bg) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9038 BLKGRD: rcvd unprotected cmd:"
+ "%02x op:%02x str=%s\n",
+ cmnd->cmnd[0], scsi_get_prot_op(cmnd),
+ dif_op_str[scsi_get_prot_op(cmnd)]);
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9039 BLKGRD: CDB: %02x %02x %02x "
+ "%02x %02x %02x %02x %02x %02x %02x\n",
+ cmnd->cmnd[0], cmnd->cmnd[1],
+ cmnd->cmnd[2], cmnd->cmnd[3],
+ cmnd->cmnd[4], cmnd->cmnd[5],
+ cmnd->cmnd[6], cmnd->cmnd[7],
+ cmnd->cmnd[8], cmnd->cmnd[9]);
+ if (cmnd->cmnd[0] == READ_10)
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9040 dbg: READ @ sector %llu, "
+ "count %u\n",
+ (unsigned long long)scsi_get_lba(cmnd),
+ blk_rq_sectors(cmnd->request));
+ else if (cmnd->cmnd[0] == WRITE_10)
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9041 dbg: WRITE @ sector %llu, "
+ "count %u cmd=%p\n",
+ (unsigned long long)scsi_get_lba(cmnd),
+ blk_rq_sectors(cmnd->request), cmnd);
+ else
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
+ "9042 dbg: parser not implemented\n");
+ }
+ err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
+ }
+
if (err)
goto out_host_busy_free_buf;
lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
atomic_inc(&ndlp->cmd_pending);
- err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring],
+ err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
&lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
if (err) {
atomic_dec(&ndlp->cmd_pending);
goto out_host_busy_free_buf;
}
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
- lpfc_sli_poll_fcp_ring(phba);
+ spin_unlock(shost->host_lock);
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
+
+ spin_lock(shost->host_lock);
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
lpfc_poll_rearm_timer(phba);
}
}
/**
- * lpfc_block_error_handler: Routine to block error handler.
- * @cmnd: Pointer to scsi_cmnd data structure.
- *
- * This routine blocks execution till fc_rport state is not FC_PORSTAT_BLCOEKD.
- **/
-static void
-lpfc_block_error_handler(struct scsi_cmnd *cmnd)
-{
- struct Scsi_Host *shost = cmnd->device->host;
- struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
-
- spin_lock_irq(shost->host_lock);
- while (rport->port_state == FC_PORTSTATE_BLOCKED) {
- spin_unlock_irq(shost->host_lock);
- msleep(1000);
- spin_lock_irq(shost->host_lock);
- }
- spin_unlock_irq(shost->host_lock);
- return;
-}
-
-/**
- * lpfc_abort_handler: Eh_abort_handler entry point of Scsi Host Template data
- *structure.
+ * 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.
struct Scsi_Host *shost = cmnd->device->host;
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
- struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring];
struct lpfc_iocbq *iocb;
struct lpfc_iocbq *abtsiocb;
struct lpfc_scsi_buf *lpfc_cmd;
int ret = SUCCESS;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
- lpfc_block_error_handler(cmnd);
+ fc_block_scsi_eh(cmnd);
lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
BUG_ON(!lpfc_cmd);
icmd = &abtsiocb->iocb;
icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
icmd->un.acxri.abortContextTag = cmd->ulpContext;
- icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
+ 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->fcp_wqidx = iocb->fcp_wqidx;
+ abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
+
if (lpfc_is_link_up(phba))
icmd->ulpCommand = CMD_ABORT_XRI_CN;
else
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
abtsiocb->vport = vport;
- if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) {
+ if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) ==
+ IOCB_ERROR) {
lpfc_sli_release_iocbq(phba, abtsiocb);
ret = FAILED;
goto out;
}
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
- lpfc_sli_poll_fcp_ring (phba);
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
lpfc_cmd->waitq = &waitq;
/* Wait for abort to complete */
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_device_reset_handler: eh_device_reset entry point of Scsi Host Template
- *data structure.
- * @cmnd: Pointer to scsi_cmnd data structure.
+ * 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 does a device reset by sending a TARGET_RESET task management
- * command.
+ * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
+ * a remote port.
*
- * Return code :
- * 0x2003 - Error
- * 0ex2002 - Success
+ * Return Code:
+ * 0x2003 - Error
+ * 0x2002 - Success.
**/
static int
-lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
+lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
+ unsigned tgt_id, unsigned int lun_id,
+ uint8_t task_mgmt_cmd)
{
- struct Scsi_Host *shost = cmnd->device->host;
- struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
struct lpfc_scsi_buf *lpfc_cmd;
- struct lpfc_iocbq *iocbq, *iocbqrsp;
- struct lpfc_rport_data *rdata = cmnd->device->hostdata;
- struct lpfc_nodelist *pnode = rdata->pnode;
- unsigned long later;
- int ret = SUCCESS;
+ struct lpfc_iocbq *iocbq;
+ struct lpfc_iocbq *iocbqrsp;
+ int ret;
int status;
- int cnt;
- struct lpfc_scsi_event_header scsi_event;
-
- lpfc_block_error_handler(cmnd);
- /*
- * If target is not in a MAPPED state, delay the reset 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)
- break;
- schedule_timeout_uninterruptible(msecs_to_jiffies(500));
- rdata = cmnd->device->hostdata;
- if (!rdata)
- break;
- pnode = rdata->pnode;
- }
-
- 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);
- if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) {
- lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0721 LUN Reset rport "
- "failure: msec x%x rdata x%p\n",
- jiffies_to_msecs(jiffies - later), rdata);
+ if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
return FAILED;
- }
+
lpfc_cmd = lpfc_get_scsi_buf(phba);
if (lpfc_cmd == NULL)
return FAILED;
lpfc_cmd->timeout = 60;
lpfc_cmd->rdata = rdata;
- status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd,
- cmnd->device->lun,
- FCP_TARGET_RESET);
+ 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;
- /* get a buffer for this IOCB command response */
+ iocbq = &lpfc_cmd->cur_iocbq;
iocbqrsp = lpfc_sli_get_iocbq(phba);
if (iocbqrsp == NULL) {
lpfc_release_scsi_buf(phba, lpfc_cmd);
return FAILED;
}
+
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
- "0703 Issue target reset to TGT %d LUN %d "
- "rpi x%x nlp_flag x%x\n", cmnd->device->id,
- cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag);
- status = lpfc_sli_issue_iocb_wait(phba,
- &phba->sli.ring[phba->sli.fcp_ring],
+ "0702 Issue %s to TGT %d LUN %d "
+ "rpi x%x nlp_flag x%x\n",
+ lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
+ rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag);
+
+ status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
iocbq, iocbqrsp, lpfc_cmd->timeout);
- if (status == IOCB_TIMEDOUT) {
- iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
- ret = TIMEOUT_ERROR;
- } else {
- if (status != IOCB_SUCCESS)
+ if (status != IOCB_SUCCESS) {
+ if (status == IOCB_TIMEDOUT) {
+ iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
+ ret = TIMEOUT_ERROR;
+ } else
ret = FAILED;
- lpfc_release_scsi_buf(phba, lpfc_cmd);
- }
- lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0713 SCSI layer issued device reset (%d, %d) "
- "return x%x status x%x result x%x\n",
- cmnd->device->id, cmnd->device->lun, ret,
- iocbqrsp->iocb.ulpStatus,
+ lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n",
+ lpfc_taskmgmt_name(task_mgmt_cmd),
+ tgt_id, lun_id, iocbqrsp->iocb.ulpStatus,
iocbqrsp->iocb.un.ulpWord[4]);
+ } else
+ ret = SUCCESS;
+
lpfc_sli_release_iocbq(phba, iocbqrsp);
- cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun,
- LPFC_CTX_TGT);
+
+ 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 = cmnd->device->hostdata;
+ struct lpfc_nodelist *pnode;
+ unsigned long later;
+
+ if (!rdata) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+ "0797 Tgt Map rport failure: rdata x%p\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 = cmnd->device->hostdata;
+ 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_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
- cmnd->device->id, cmnd->device->lun,
- LPFC_CTX_TGT);
+ 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, cmnd->device->id,
- cmnd->device->lun, LPFC_CTX_TGT);
+ cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
}
if (cnt) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0719 device reset I/O flush failure: "
- "cnt x%x\n", cnt);
- ret = FAILED;
+ "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 ret;
+ return SUCCESS;
}
/**
- * lpfc_bus_reset_handler: eh_bus_reset_handler entry point of Scsi Host
- * Template data structure.
+ * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
* @cmnd: Pointer to scsi_cmnd data structure.
*
- * This routine does target reset to all target on @cmnd->device->host.
+ * This routine does a device reset by sending a LUN_RESET task management
+ * command.
*
- * Return Code:
- * 0x2003 - Error
- * 0x2002 - Success
+ * 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 = cmnd->device->hostdata;
+ struct lpfc_nodelist *pnode;
+ unsigned tgt_id = cmnd->device->id;
+ unsigned int lun_id = cmnd->device->lun;
+ struct lpfc_scsi_event_header scsi_event;
+ int status;
+
+ if (!rdata) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0798 Device Reset rport failure: rdata x%p\n", rdata);
+ return FAILED;
+ }
+ pnode = rdata->pnode;
+ fc_block_scsi_eh(cmnd);
+
+ 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%p\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, rdata, tgt_id, lun_id,
+ FCP_LUN_RESET);
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0713 SCSI layer issued Device Reset (%d, %d) "
+ "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.
+ */
+ 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 = cmnd->device->hostdata;
+ struct lpfc_nodelist *pnode;
+ unsigned tgt_id = cmnd->device->id;
+ unsigned int lun_id = cmnd->device->lun;
+ struct lpfc_scsi_event_header scsi_event;
+ int status;
+
+ if (!rdata) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0799 Target Reset rport failure: rdata x%p\n", rdata);
+ return FAILED;
+ }
+ pnode = rdata->pnode;
+ fc_block_scsi_eh(cmnd);
+
+ 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%p\n", rdata);
+ return FAILED;
+ }
+
+ 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, rdata, tgt_id, lun_id,
+ FCP_TARGET_RESET);
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
+ "0723 SCSI layer issued Target Reset (%d, %d) "
+ "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.
+ */
+ 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_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp = NULL;
- int match;
- int ret = SUCCESS, status = SUCCESS, i;
- int cnt;
- struct lpfc_scsi_buf * lpfc_cmd;
- unsigned long later;
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;
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);
+ fc_host_post_vendor_event(shost, fc_get_event_number(),
+ sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
+
+ fc_block_scsi_eh(cmnd);
- lpfc_block_error_handler(cmnd);
/*
* Since the driver manages a single bus device, reset all
* targets known to the driver. Should any target reset
spin_unlock_irq(shost->host_lock);
if (!match)
continue;
- lpfc_cmd = lpfc_get_scsi_buf(phba);
- if (lpfc_cmd) {
- lpfc_cmd->timeout = 60;
- status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i,
- cmnd->device->lun,
- ndlp->rport->dd_data);
- if (status != TIMEOUT_ERROR)
- lpfc_release_scsi_buf(phba, lpfc_cmd);
- }
- if (!lpfc_cmd || status != SUCCESS) {
+
+ status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data,
+ 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);
}
}
/*
- * All outstanding txcmplq I/Os should have been aborted by
- * the targets. Unfortunately, some targets do not abide by
- * this forcing the driver to double check.
+ * 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.
*/
- cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST);
- if (cnt)
- lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
- 0, 0, LPFC_CTX_HOST);
- 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, 0, 0, LPFC_CTX_HOST);
- }
- if (cnt) {
- lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0715 Bus Reset I/O flush failure: "
- "cnt x%x left x%x\n", cnt, i);
+
+ 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_slave_alloc: slave_alloc entry point of Scsi Host Template data
- * structure.
+ * 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
{
struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
struct lpfc_hba *phba = vport->phba;
- struct lpfc_scsi_buf *scsi_buf = NULL;
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
- uint32_t total = 0, i;
+ uint32_t total = 0;
uint32_t num_to_alloc = 0;
- unsigned long flags;
+ int num_allocated = 0;
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
(phba->cfg_hba_queue_depth - total));
num_to_alloc = phba->cfg_hba_queue_depth - total;
}
-
- for (i = 0; i < num_to_alloc; i++) {
- scsi_buf = lpfc_new_scsi_buf(vport);
- if (!scsi_buf) {
- lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0706 Failed to allocate "
- "command buffer\n");
- break;
- }
-
- spin_lock_irqsave(&phba->scsi_buf_list_lock, flags);
- phba->total_scsi_bufs++;
- list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list);
- spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags);
+ num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc);
+ if (num_to_alloc != num_allocated) {
+ lpfc_printf_vlog(vport, KERN_WARNING, 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: slave_configure entry point of Scsi Host Templater data
- * structure.
+ * lpfc_slave_configure - scsi_host_template slave_configure entry point
* @sdev: Pointer to scsi_device.
*
* This routine configures following items
rport->dev_loss_tmo = vport->cfg_devloss_tmo;
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
- lpfc_sli_poll_fcp_ring(phba);
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
lpfc_poll_rearm_timer(phba);
}
}
/**
- * lpfc_slave_destroy: slave_destroy entry point of SHT data structure.
+ * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
* @sdev: Pointer to scsi_device.
*
* This routine sets @sdev hostatdata filed to null.
.info = lpfc_info,
.queuecommand = lpfc_queuecommand,
.eh_abort_handler = lpfc_abort_handler,
- .eh_device_reset_handler= lpfc_device_reset_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,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = lpfc_hba_attrs,
.max_sectors = 0xFFFF,
+ .vendor_id = LPFC_NL_VENDOR_ID,
+ .change_queue_depth = lpfc_change_queue_depth,
};
struct scsi_host_template lpfc_vport_template = {
.info = lpfc_info,
.queuecommand = lpfc_queuecommand,
.eh_abort_handler = lpfc_abort_handler,
- .eh_device_reset_handler= lpfc_device_reset_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,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = lpfc_vport_attrs,
.max_sectors = 0xFFFF,
+ .change_queue_depth = lpfc_change_queue_depth,
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff