diff options
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 76 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_crtn.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 44 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 1 |
4 files changed, 49 insertions, 73 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index bffd86f204d..80ca11c5158 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -1466,80 +1466,10 @@ lpfc_sriov_hw_max_virtfn_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_hba *phba = vport->phba; - struct pci_dev *pdev = phba->pcidev; - union lpfc_sli4_cfg_shdr *shdr; - uint32_t shdr_status, shdr_add_status; - LPFC_MBOXQ_t *mboxq; - struct lpfc_mbx_get_prof_cfg *get_prof_cfg; - struct lpfc_rsrc_desc_pcie *desc; - uint32_t max_nr_virtfn; - uint32_t desc_count; - int length, rc, i; - - if ((phba->sli_rev < LPFC_SLI_REV4) || - (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != - LPFC_SLI_INTF_IF_TYPE_2)) - return -EPERM; - - if (!pdev->is_physfn) - return snprintf(buf, PAGE_SIZE, "%d\n", 0); - - mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); - if (!mboxq) - return -ENOMEM; - - /* get the maximum number of virtfn support by physfn */ - length = (sizeof(struct lpfc_mbx_get_prof_cfg) - - sizeof(struct lpfc_sli4_cfg_mhdr)); - lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, - LPFC_MBOX_OPCODE_GET_PROFILE_CONFIG, - length, LPFC_SLI4_MBX_EMBED); - shdr = (union lpfc_sli4_cfg_shdr *) - &mboxq->u.mqe.un.sli4_config.header.cfg_shdr; - bf_set(lpfc_mbox_hdr_pf_num, &shdr->request, - phba->sli4_hba.iov.pf_number + 1); - - get_prof_cfg = &mboxq->u.mqe.un.get_prof_cfg; - bf_set(lpfc_mbx_get_prof_cfg_prof_tp, &get_prof_cfg->u.request, - LPFC_CFG_TYPE_CURRENT_ACTIVE); - - rc = lpfc_sli_issue_mbox_wait(phba, mboxq, - lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG)); - - if (rc != MBX_TIMEOUT) { - /* check return status */ - shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); - shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, - &shdr->response); - if (shdr_status || shdr_add_status || rc) - goto error_out; - - } else - goto error_out; - - desc_count = get_prof_cfg->u.response.prof_cfg.rsrc_desc_count; - - for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) { - desc = (struct lpfc_rsrc_desc_pcie *) - &get_prof_cfg->u.response.prof_cfg.desc[i]; - if (LPFC_RSRC_DESC_TYPE_PCIE == - bf_get(lpfc_rsrc_desc_pcie_type, desc)) { - max_nr_virtfn = bf_get(lpfc_rsrc_desc_pcie_nr_virtfn, - desc); - break; - } - } - - if (i < LPFC_RSRC_DESC_MAX_NUM) { - if (rc != MBX_TIMEOUT) - mempool_free(mboxq, phba->mbox_mem_pool); - return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn); - } + uint16_t max_nr_virtfn; -error_out: - if (rc != MBX_TIMEOUT) - mempool_free(mboxq, phba->mbox_mem_pool); - return -EIO; + max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba); + return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn); } /** diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index a4f00cc72f4..1e41af8dea7 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -440,3 +440,4 @@ struct lpfc_node_rrq *lpfc_get_active_rrq(struct lpfc_vport *, uint16_t, int lpfc_wr_object(struct lpfc_hba *, struct list_head *, uint32_t, uint32_t *); /* functions to support SR-IOV */ int lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *, int); +uint16_t lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *); diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 9d3e8affccb..027b797c991 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -4037,6 +4037,34 @@ lpfc_reset_hba(struct lpfc_hba *phba) } /** + * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions + * @phba: pointer to lpfc hba data structure. + * + * 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. + **/ +uint16_t +lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba) +{ + struct pci_dev *pdev = phba->pcidev; + uint16_t nr_virtfn; + int pos; + + if (!pdev->is_physfn) + return 0; + + pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); + if (pos == 0) + return 0; + + pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn); + return nr_virtfn; +} + +/** * 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. @@ -4051,8 +4079,17 @@ int lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn) { struct pci_dev *pdev = phba->pcidev; + uint16_t max_nr_vfn; int rc; + max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba); + if (nr_vfn > max_nr_vfn) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3057 Requested vfs (%d) greater than " + "supported vfs (%d)", nr_vfn, max_nr_vfn); + return -EINVAL; + } + rc = pci_enable_sriov(pdev, nr_vfn); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, @@ -9487,6 +9524,13 @@ lpfc_io_slot_reset_s4(struct pci_dev *pdev) } pci_restore_state(pdev); + + /* + * As the new kernel behavior of pci_restore_state() API call clears + * device saved_state flag, need to save the restored state again. + */ + pci_save_state(pdev); + if (pdev->is_busmaster) pci_set_master(pdev); diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 59d81624a85..5b28ea1d72c 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -5839,6 +5839,7 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba) "Advanced Error Reporting (AER)\n"); phba->cfg_aer_support = 0; } + rc = 0; } if (!(phba->hba_flag & HBA_FCOE_MODE)) { |