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author | James Smart <james.smart@emulex.com> | 2011-05-24 15:42:11 (GMT) |
---|---|---|
committer | James Bottomley <jbottomley@parallels.com> | 2011-05-27 03:49:36 (GMT) |
commit | 912e3acde60b3b9ebf46c5ec5ae6bd01b80132c8 (patch) | |
tree | 2ca2593ff23e61580879e1deb405b2dfc8d92f83 /drivers/scsi/lpfc/lpfc_init.c | |
parent | c0c1151276aae83dffbe3f2837a3b1d893894115 (diff) | |
download | linux-fsl-qoriq-912e3acde60b3b9ebf46c5ec5ae6bd01b80132c8.tar.xz |
[SCSI] lpfc 8.3.24: Add SR-IOV control
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 144 |
1 files changed, 142 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 16b4da4..e81912c 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -4034,6 +4034,36 @@ lpfc_reset_hba(struct lpfc_hba *phba) } /** + * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions + * @phba: pointer to lpfc hba data structure. + * @nr_vfn: number of virtual functions to be enabled. + * + * This function enables the PCI SR-IOV virtual functions to a physical + * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to + * enable the number of virtual functions to the physical function. As + * not all devices support SR-IOV, the return code from the pci_enable_sriov() + * API call does not considered as an error condition for most of the device. + **/ +int +lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn) +{ + struct pci_dev *pdev = phba->pcidev; + int rc; + + rc = pci_enable_sriov(pdev, nr_vfn); + if (rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "2806 Failed to enable sriov on this device " + "with vfn number nr_vf:%d, rc:%d\n", + nr_vfn, rc); + } else + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "2807 Successful enable sriov on this device " + "with vfn number nr_vf:%d\n", nr_vfn); + return rc; +} + +/** * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev. * @phba: pointer to lpfc hba data structure. * @@ -4048,6 +4078,7 @@ static int lpfc_sli_driver_resource_setup(struct lpfc_hba *phba) { struct lpfc_sli *psli; + int rc; /* * Initialize timers used by driver @@ -4122,6 +4153,23 @@ lpfc_sli_driver_resource_setup(struct lpfc_hba *phba) if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ)) return -ENOMEM; + /* + * Enable sr-iov virtual functions if supported and configured + * through the module parameter. + */ + if (phba->cfg_sriov_nr_virtfn > 0) { + rc = lpfc_sli_probe_sriov_nr_virtfn(phba, + phba->cfg_sriov_nr_virtfn); + if (rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "2808 Requested number of SR-IOV " + "virtual functions (%d) is not " + "supported\n", + phba->cfg_sriov_nr_virtfn); + phba->cfg_sriov_nr_virtfn = 0; + } + } + return 0; } @@ -4427,6 +4475,23 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) goto out_free_fcp_eq_hdl; } + /* + * Enable sr-iov virtual functions if supported and configured + * through the module parameter. + */ + if (phba->cfg_sriov_nr_virtfn > 0) { + rc = lpfc_sli_probe_sriov_nr_virtfn(phba, + phba->cfg_sriov_nr_virtfn); + if (rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "3020 Requested number of SR-IOV " + "virtual functions (%d) is not " + "supported\n", + phba->cfg_sriov_nr_virtfn); + phba->cfg_sriov_nr_virtfn = 0; + } + } + return rc; out_free_fcp_eq_hdl: @@ -5780,7 +5845,12 @@ lpfc_sli4_read_config(struct lpfc_hba *phba) { LPFC_MBOXQ_t *pmb; struct lpfc_mbx_read_config *rd_config; - uint32_t rc = 0; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t shdr_status, shdr_add_status; + struct lpfc_mbx_get_func_cfg *get_func_cfg; + struct lpfc_rsrc_desc_fcfcoe *desc; + uint32_t desc_count; + int length, i, rc = 0; pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { @@ -5855,7 +5925,9 @@ lpfc_sli4_read_config(struct lpfc_hba *phba) phba->sli4_hba.max_cfg_param.fcfi_base, phba->sli4_hba.max_cfg_param.max_fcfi); } - mempool_free(pmb, phba->mbox_mem_pool); + + if (rc) + goto read_cfg_out; /* Reset the DFT_HBA_Q_DEPTH to the max xri */ if (phba->cfg_hba_queue_depth > @@ -5864,6 +5936,65 @@ lpfc_sli4_read_config(struct lpfc_hba *phba) phba->cfg_hba_queue_depth = phba->sli4_hba.max_cfg_param.max_xri - lpfc_sli4_get_els_iocb_cnt(phba); + + if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != + LPFC_SLI_INTF_IF_TYPE_2) + goto read_cfg_out; + + /* get the pf# and vf# for SLI4 if_type 2 port */ + length = (sizeof(struct lpfc_mbx_get_func_cfg) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG, + length, LPFC_SLI4_MBX_EMBED); + + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) + &pmb->u.mqe.un.sli4_config.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc || shdr_status || shdr_add_status) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3026 Mailbox failed , mbxCmd x%x " + "GET_FUNCTION_CONFIG, mbxStatus x%x\n", + bf_get(lpfc_mqe_command, &pmb->u.mqe), + bf_get(lpfc_mqe_status, &pmb->u.mqe)); + rc = -EIO; + goto read_cfg_out; + } + + /* search for fc_fcoe resrouce descriptor */ + get_func_cfg = &pmb->u.mqe.un.get_func_cfg; + desc_count = get_func_cfg->func_cfg.rsrc_desc_count; + + for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) { + desc = (struct lpfc_rsrc_desc_fcfcoe *) + &get_func_cfg->func_cfg.desc[i]; + if (LPFC_RSRC_DESC_TYPE_FCFCOE == + bf_get(lpfc_rsrc_desc_pcie_type, desc)) { + phba->sli4_hba.iov.pf_number = + bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc); + phba->sli4_hba.iov.vf_number = + bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc); + break; + } + } + + if (i < LPFC_RSRC_DESC_MAX_NUM) + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3027 GET_FUNCTION_CONFIG: pf_number:%d, " + "vf_number:%d\n", phba->sli4_hba.iov.pf_number, + phba->sli4_hba.iov.vf_number); + else { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3028 GET_FUNCTION_CONFIG: failed to find " + "Resrouce Descriptor:x%x\n", + LPFC_RSRC_DESC_TYPE_FCFCOE); + rc = -EIO; + } + +read_cfg_out: + mempool_free(pmb, phba->mbox_mem_pool); return rc; } @@ -7825,6 +7956,7 @@ lpfc_sli4_hba_unset(struct lpfc_hba *phba) { int wait_cnt = 0; LPFC_MBOXQ_t *mboxq; + struct pci_dev *pdev = phba->pcidev; lpfc_stop_hba_timers(phba); phba->sli4_hba.intr_enable = 0; @@ -7864,6 +7996,10 @@ lpfc_sli4_hba_unset(struct lpfc_hba *phba) /* Disable PCI subsystem interrupt */ lpfc_sli4_disable_intr(phba); + /* Disable SR-IOV if enabled */ + if (phba->cfg_sriov_nr_virtfn) + pci_disable_sriov(pdev); + /* Stop kthread signal shall trigger work_done one more time */ kthread_stop(phba->worker_thread); @@ -8243,6 +8379,10 @@ lpfc_pci_remove_one_s3(struct pci_dev *pdev) lpfc_debugfs_terminate(vport); + /* Disable SR-IOV if enabled */ + if (phba->cfg_sriov_nr_virtfn) + pci_disable_sriov(pdev); + /* Disable interrupt */ lpfc_sli_disable_intr(phba); |