From d7c479929b6804f4e9d5fb5f721aba31622f3d97 Mon Sep 17 00:00:00 2001 From: James Smart Date: Tue, 8 Jun 2010 18:31:54 -0400 Subject: [PATCH] [SCSI] lpfc 8.3.14: SCSI and SLI API fixes - Fixed accounting of allocated SCSI buffers when post sgl fails. - Restrict scsi buffer allocation based on LUN count (sdev_cnt). - Create __lpfc_sli_free_rpi that doesn't take out the hbalock. - Modify lpfc_sli_free_rpi to call __lpfc_sli_free_rpi. - Call __lpfc_sli_free_rpi in lpfc_cleanup_pending_mbox. - Do not swap the strings returned in mailbox commands and do not swap byte aligned data in VPD. Signed-off-by: Alex Iannicelli Signed-off-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc.h | 1 + drivers/scsi/lpfc/lpfc_crtn.h | 1 + drivers/scsi/lpfc/lpfc_hbadisc.c | 1 + drivers/scsi/lpfc/lpfc_init.c | 1 + drivers/scsi/lpfc/lpfc_mbox.c | 20 ++++++++++++++++++++ drivers/scsi/lpfc/lpfc_scsi.c | 14 ++++++++++---- drivers/scsi/lpfc/lpfc_sli.c | 34 +++++++++++++++++++++++++++------- drivers/scsi/lpfc/lpfc_sli4.h | 1 + 8 files changed, 62 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index fcfc495..bb40fcb 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -815,6 +815,7 @@ struct lpfc_hba { #define HBA_MENLO_SUPPORT 0x1 /* HBA supports menlo commands */ uint32_t iocb_cnt; uint32_t iocb_max; + atomic_t sdev_cnt; }; static inline struct Scsi_Host * diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index 361f4e7..03f4ddc 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -191,6 +191,7 @@ irqreturn_t lpfc_sli4_sp_intr_handler(int, void *); irqreturn_t lpfc_sli4_fp_intr_handler(int, void *); void lpfc_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *); +void lpfc_sli4_swap_str(struct lpfc_hba *, LPFC_MBOXQ_t *); void lpfc_config_ring(struct lpfc_hba *, int, LPFC_MBOXQ_t *); void lpfc_config_port(struct lpfc_hba *, LPFC_MBOXQ_t *); void lpfc_kill_board(struct lpfc_hba *, LPFC_MBOXQ_t *); diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 7cd5c47..9fcad20 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -3845,6 +3845,7 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) mempool_free(mbox, phba->mbox_mem_pool); } lpfc_no_rpi(phba, ndlp); + ndlp->nlp_rpi = 0; ndlp->nlp_flag &= ~NLP_RPI_VALID; ndlp->nlp_flag &= ~NLP_NPR_ADISC; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 08db674..fb06933 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -4919,6 +4919,7 @@ lpfc_create_shost(struct lpfc_hba *phba) phba->fc_altov = FF_DEF_ALTOV; phba->fc_arbtov = FF_DEF_ARBTOV; + atomic_set(&phba->sdev_cnt, 0); vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev); if (!vport) return -ENODEV; diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c index 196371f..cb5d93b 100644 --- a/drivers/scsi/lpfc/lpfc_mbox.c +++ b/drivers/scsi/lpfc/lpfc_mbox.c @@ -955,6 +955,26 @@ lpfc_read_rev(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) return; } +void +lpfc_sli4_swap_str(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + MAILBOX_t *mb = &pmb->u.mb; + struct lpfc_mqe *mqe; + + switch (mb->mbxCommand) { + case MBX_READ_REV: + mqe = &pmb->u.mqe; + lpfc_sli_pcimem_bcopy(mqe->un.read_rev.fw_name, + mqe->un.read_rev.fw_name, 16); + lpfc_sli_pcimem_bcopy(mqe->un.read_rev.ulp_fw_name, + mqe->un.read_rev.ulp_fw_name, 16); + break; + default: + break; + } + return; +} + /** * lpfc_build_hbq_profile2 - Set up the HBQ Selection Profile 2 * @hbqmb: pointer to the HBQ configuration data structure in mailbox command. diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index f68753e..7b66b71 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -747,7 +747,6 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) 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++) { @@ -860,7 +859,6 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) if (status) { /* Put this back on the abort scsi list */ psb->exch_busy = 1; - rc++; } else { psb->exch_busy = 0; psb->status = IOSTAT_SUCCESS; @@ -879,7 +877,6 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) if (status) { /* Put this back on the abort scsi list */ psb->exch_busy = 1; - rc++; } else { psb->exch_busy = 0; psb->status = IOSTAT_SUCCESS; @@ -889,7 +886,7 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) } } - return bcnt + non_sequential_xri - rc; + return bcnt + non_sequential_xri; } /** @@ -3572,11 +3569,13 @@ lpfc_slave_alloc(struct scsi_device *sdev) uint32_t total = 0; uint32_t num_to_alloc = 0; int num_allocated = 0; + uint32_t sdev_cnt; if (!rport || fc_remote_port_chkready(rport)) return -ENXIO; sdev->hostdata = rport->dd_data; + sdev_cnt = atomic_inc_return(&phba->sdev_cnt); /* * Populate the cmds_per_lun count scsi_bufs into this host's globally @@ -3588,6 +3587,10 @@ lpfc_slave_alloc(struct scsi_device *sdev) total = phba->total_scsi_bufs; num_to_alloc = vport->cfg_lun_queue_depth + 2; + /* If allocated buffers are enough do nothing */ + if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) + return 0; + /* Allow some exchanges to be available always to complete discovery */ if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, @@ -3669,6 +3672,9 @@ lpfc_slave_configure(struct scsi_device *sdev) static void lpfc_slave_destroy(struct scsi_device *sdev) { + struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; + struct lpfc_hba *phba = vport->phba; + atomic_dec(&phba->sdev_cnt); sdev->hostdata = NULL; return; } diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index f38c05d..7ddf526 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -4236,7 +4236,8 @@ lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, if (mqe->un.read_rev.avail_vpd_len < *vpd_size) *vpd_size = mqe->un.read_rev.avail_vpd_len; - lpfc_sli_pcimem_bcopy(dmabuf->virt, vpd, *vpd_size); + memcpy(vpd, dmabuf->virt, *vpd_size); + dma_free_coherent(&phba->pcidev->dev, dma_size, dmabuf->virt, dmabuf->phys); kfree(dmabuf); @@ -5305,7 +5306,8 @@ lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) if (mcqe_status != MB_CQE_STATUS_SUCCESS) { bf_set(lpfc_mqe_status, mb, LPFC_MBX_ERROR_RANGE | mcqe_status); rc = MBXERR_ERROR; - } + } else + lpfc_sli4_swap_str(phba, mboxq); lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0356 Mailbox cmd x%x (x%x) Status x%x " @@ -7790,9 +7792,10 @@ lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq, * if LPFC_MBX_WAKE flag is set the mailbox is completed * else do not free the resources. */ - if (pmboxq->mbox_flag & LPFC_MBX_WAKE) + if (pmboxq->mbox_flag & LPFC_MBX_WAKE) { retval = MBX_SUCCESS; - else { + lpfc_sli4_swap_str(phba, pmboxq); + } else { retval = MBX_TIMEOUT; pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; } @@ -11975,12 +11978,26 @@ lpfc_sli4_alloc_rpi(struct lpfc_hba *phba) * available rpis maintained by the driver. **/ void +__lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) +{ + if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) { + phba->sli4_hba.rpi_count--; + phba->sli4_hba.max_cfg_param.rpi_used--; + } +} + +/** + * lpfc_sli4_free_rpi - Release an rpi for reuse. + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to release an rpi to the pool of + * available rpis maintained by the driver. + **/ +void lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) { spin_lock_irq(&phba->hbalock); - clear_bit(rpi, phba->sli4_hba.rpi_bmask); - phba->sli4_hba.rpi_count--; - phba->sli4_hba.max_cfg_param.rpi_used--; + __lpfc_sli4_free_rpi(phba, rpi); spin_unlock_irq(&phba->hbalock); } @@ -12751,6 +12768,9 @@ lpfc_cleanup_pending_mbox(struct lpfc_vport *vport) continue; if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) { + if (phba->sli_rev == LPFC_SLI_REV4) + __lpfc_sli4_free_rpi(phba, + mb->u.mb.un.varRegLogin.rpi); mp = (struct lpfc_dmabuf *) (mb->context1); if (mp) { __lpfc_mbuf_free(phba, mp->virt, mp->phys); diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 7686c1a..c916079 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -528,6 +528,7 @@ int lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *); struct lpfc_rpi_hdr *lpfc_sli4_create_rpi_hdr(struct lpfc_hba *); void lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *); int lpfc_sli4_alloc_rpi(struct lpfc_hba *); +void __lpfc_sli4_free_rpi(struct lpfc_hba *, int); void lpfc_sli4_free_rpi(struct lpfc_hba *, int); void lpfc_sli4_remove_rpis(struct lpfc_hba *); void lpfc_sli4_async_event_proc(struct lpfc_hba *); -- 2.7.4