diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_bsg.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_bsg.c | 344 |
1 files changed, 339 insertions, 5 deletions
diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c index 90745feca808..7bd7ae86bed5 100644 --- a/drivers/scsi/lpfc/lpfc_bsg.c +++ b/drivers/scsi/lpfc/lpfc_bsg.c @@ -27,6 +27,7 @@ #include <linux/delay.h> #include <linux/list.h> #include <linux/bsg-lib.h> +#include <linux/vmalloc.h> #include <scsi/scsi.h> #include <scsi/scsi_host.h> @@ -2843,9 +2844,6 @@ diag_cmd_data_alloc(struct lpfc_hba *phba, if (nocopydata) { bpl->tus.f.bdeFlags = 0; - pci_dma_sync_single_for_device(phba->pcidev, - dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE); - } else { memset((uint8_t *)dmp->dma.virt, 0, cnt); bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; @@ -5309,6 +5307,330 @@ job_error: } /** + * lpfc_check_fwlog_support: Check FW log support on the adapter + * @phba: Pointer to HBA context object. + * + * Check if FW Logging support by the adapter + **/ +int +lpfc_check_fwlog_support(struct lpfc_hba *phba) +{ + struct lpfc_ras_fwlog *ras_fwlog = NULL; + + ras_fwlog = &phba->ras_fwlog; + + if (ras_fwlog->ras_hwsupport == false) + return -EACCES; + else if (ras_fwlog->ras_enabled == false) + return -EPERM; + else + return 0; +} + +/** + * lpfc_bsg_get_ras_config: Get RAS configuration settings + * @job: fc_bsg_job to handle + * + * Get RAS configuration values set. + **/ +static int +lpfc_bsg_get_ras_config(struct bsg_job *job) +{ + struct Scsi_Host *shost = fc_bsg_to_shost(job); + struct lpfc_vport *vport = shost_priv(shost); + struct fc_bsg_reply *bsg_reply = job->reply; + struct lpfc_hba *phba = vport->phba; + struct lpfc_bsg_get_ras_config_reply *ras_reply; + struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; + int rc = 0; + + if (job->request_len < + sizeof(struct fc_bsg_request) + + sizeof(struct lpfc_bsg_ras_req)) { + lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, + "6181 Received RAS_LOG request " + "below minimum size\n"); + rc = -EINVAL; + goto ras_job_error; + } + + /* Check FW log status */ + rc = lpfc_check_fwlog_support(phba); + if (rc == -EACCES || rc == -EPERM) + goto ras_job_error; + + ras_reply = (struct lpfc_bsg_get_ras_config_reply *) + bsg_reply->reply_data.vendor_reply.vendor_rsp; + + /* Current logging state */ + if (ras_fwlog->ras_active == true) + ras_reply->state = LPFC_RASLOG_STATE_RUNNING; + else + ras_reply->state = LPFC_RASLOG_STATE_STOPPED; + + ras_reply->log_level = phba->ras_fwlog.fw_loglevel; + ras_reply->log_buff_sz = phba->cfg_ras_fwlog_buffsize; + +ras_job_error: + /* make error code available to userspace */ + bsg_reply->result = rc; + + /* complete the job back to userspace */ + bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); + return rc; +} + +/** + * lpfc_ras_stop_fwlog: Disable FW logging by the adapter + * @phba: Pointer to HBA context object. + * + * Disable FW logging into host memory on the adapter. To + * be done before reading logs from the host memory. + **/ +static void +lpfc_ras_stop_fwlog(struct lpfc_hba *phba) +{ + struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; + + ras_fwlog->ras_active = false; + + /* Disable FW logging to host memory */ + writel(LPFC_CTL_PDEV_CTL_DDL_RAS, + phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET); +} + +/** + * lpfc_bsg_set_ras_config: Set FW logging parameters + * @job: fc_bsg_job to handle + * + * Set log-level parameters for FW-logging in host memory + **/ +static int +lpfc_bsg_set_ras_config(struct bsg_job *job) +{ + struct Scsi_Host *shost = fc_bsg_to_shost(job); + struct lpfc_vport *vport = shost_priv(shost); + struct lpfc_hba *phba = vport->phba; + struct lpfc_bsg_set_ras_config_req *ras_req; + struct fc_bsg_request *bsg_request = job->request; + struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; + struct fc_bsg_reply *bsg_reply = job->reply; + uint8_t action = 0, log_level = 0; + int rc = 0; + + if (job->request_len < + sizeof(struct fc_bsg_request) + + sizeof(struct lpfc_bsg_set_ras_config_req)) { + lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, + "6182 Received RAS_LOG request " + "below minimum size\n"); + rc = -EINVAL; + goto ras_job_error; + } + + /* Check FW log status */ + rc = lpfc_check_fwlog_support(phba); + if (rc == -EACCES || rc == -EPERM) + goto ras_job_error; + + ras_req = (struct lpfc_bsg_set_ras_config_req *) + bsg_request->rqst_data.h_vendor.vendor_cmd; + action = ras_req->action; + log_level = ras_req->log_level; + + if (action == LPFC_RASACTION_STOP_LOGGING) { + /* Check if already disabled */ + if (ras_fwlog->ras_active == false) { + rc = -ESRCH; + goto ras_job_error; + } + + /* Disable logging */ + lpfc_ras_stop_fwlog(phba); + } else { + /*action = LPFC_RASACTION_START_LOGGING*/ + if (ras_fwlog->ras_active == true) { + rc = -EINPROGRESS; + goto ras_job_error; + } + + /* Enable logging */ + rc = lpfc_sli4_ras_fwlog_init(phba, log_level, + LPFC_RAS_ENABLE_LOGGING); + if (rc) + rc = -EINVAL; + } +ras_job_error: + /* make error code available to userspace */ + bsg_reply->result = rc; + + /* complete the job back to userspace */ + bsg_job_done(job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + + return rc; +} + +/** + * lpfc_bsg_get_ras_lwpd: Get log write position data + * @job: fc_bsg_job to handle + * + * Get Offset/Wrap count of the log message written + * in host memory + **/ +static int +lpfc_bsg_get_ras_lwpd(struct bsg_job *job) +{ + struct Scsi_Host *shost = fc_bsg_to_shost(job); + struct lpfc_vport *vport = shost_priv(shost); + struct lpfc_bsg_get_ras_lwpd *ras_reply; + struct lpfc_hba *phba = vport->phba; + struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; + struct fc_bsg_reply *bsg_reply = job->reply; + uint32_t lwpd_offset = 0; + uint64_t wrap_value = 0; + int rc = 0; + + rc = lpfc_check_fwlog_support(phba); + if (rc == -EACCES || rc == -EPERM) + goto ras_job_error; + + if (job->request_len < + sizeof(struct fc_bsg_request) + + sizeof(struct lpfc_bsg_ras_req)) { + lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, + "6183 Received RAS_LOG request " + "below minimum size\n"); + rc = -EINVAL; + goto ras_job_error; + } + + ras_reply = (struct lpfc_bsg_get_ras_lwpd *) + bsg_reply->reply_data.vendor_reply.vendor_rsp; + + lwpd_offset = *((uint32_t *)ras_fwlog->lwpd.virt) & 0xffffffff; + ras_reply->offset = be32_to_cpu(lwpd_offset); + + wrap_value = *((uint64_t *)ras_fwlog->lwpd.virt); + ras_reply->wrap_count = be32_to_cpu((wrap_value >> 32) & 0xffffffff); + +ras_job_error: + /* make error code available to userspace */ + bsg_reply->result = rc; + + /* complete the job back to userspace */ + bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); + + return rc; +} + +/** + * lpfc_bsg_get_ras_fwlog: Read FW log + * @job: fc_bsg_job to handle + * + * Copy the FW log into the passed buffer. + **/ +static int +lpfc_bsg_get_ras_fwlog(struct bsg_job *job) +{ + struct Scsi_Host *shost = fc_bsg_to_shost(job); + struct lpfc_vport *vport = shost_priv(shost); + struct lpfc_hba *phba = vport->phba; + struct fc_bsg_request *bsg_request = job->request; + struct fc_bsg_reply *bsg_reply = job->reply; + struct lpfc_bsg_get_fwlog_req *ras_req; + uint32_t rd_offset, rd_index, offset, pending_wlen; + uint32_t boundary = 0, align_len = 0, write_len = 0; + void *dest, *src, *fwlog_buff; + struct lpfc_ras_fwlog *ras_fwlog = NULL; + struct lpfc_dmabuf *dmabuf, *next; + int rc = 0; + + ras_fwlog = &phba->ras_fwlog; + + rc = lpfc_check_fwlog_support(phba); + if (rc == -EACCES || rc == -EPERM) + goto ras_job_error; + + /* Logging to be stopped before reading */ + if (ras_fwlog->ras_active == true) { + rc = -EINPROGRESS; + goto ras_job_error; + } + + if (job->request_len < + sizeof(struct fc_bsg_request) + + sizeof(struct lpfc_bsg_get_fwlog_req)) { + lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, + "6184 Received RAS_LOG request " + "below minimum size\n"); + rc = -EINVAL; + goto ras_job_error; + } + + ras_req = (struct lpfc_bsg_get_fwlog_req *) + bsg_request->rqst_data.h_vendor.vendor_cmd; + rd_offset = ras_req->read_offset; + + /* Allocate memory to read fw log*/ + fwlog_buff = vmalloc(ras_req->read_size); + if (!fwlog_buff) { + rc = -ENOMEM; + goto ras_job_error; + } + + rd_index = (rd_offset / LPFC_RAS_MAX_ENTRY_SIZE); + offset = (rd_offset % LPFC_RAS_MAX_ENTRY_SIZE); + pending_wlen = ras_req->read_size; + dest = fwlog_buff; + + list_for_each_entry_safe(dmabuf, next, + &ras_fwlog->fwlog_buff_list, list) { + + if (dmabuf->buffer_tag < rd_index) + continue; + + /* Align read to buffer size */ + if (offset) { + boundary = ((dmabuf->buffer_tag + 1) * + LPFC_RAS_MAX_ENTRY_SIZE); + + align_len = (boundary - offset); + write_len = min_t(u32, align_len, + LPFC_RAS_MAX_ENTRY_SIZE); + } else { + write_len = min_t(u32, pending_wlen, + LPFC_RAS_MAX_ENTRY_SIZE); + align_len = 0; + boundary = 0; + } + src = dmabuf->virt + offset; + memcpy(dest, src, write_len); + + pending_wlen -= write_len; + if (!pending_wlen) + break; + + dest += write_len; + offset = (offset + write_len) % LPFC_RAS_MAX_ENTRY_SIZE; + } + + bsg_reply->reply_payload_rcv_len = + sg_copy_from_buffer(job->reply_payload.sg_list, + job->reply_payload.sg_cnt, + fwlog_buff, ras_req->read_size); + + vfree(fwlog_buff); + +ras_job_error: + bsg_reply->result = rc; + bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); + + return rc; +} + + +/** * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job * @job: fc_bsg_job to handle **/ @@ -5355,6 +5677,18 @@ lpfc_bsg_hst_vendor(struct bsg_job *job) case LPFC_BSG_VENDOR_FORCED_LINK_SPEED: rc = lpfc_forced_link_speed(job); break; + case LPFC_BSG_VENDOR_RAS_GET_LWPD: + rc = lpfc_bsg_get_ras_lwpd(job); + break; + case LPFC_BSG_VENDOR_RAS_GET_FWLOG: + rc = lpfc_bsg_get_ras_fwlog(job); + break; + case LPFC_BSG_VENDOR_RAS_GET_CONFIG: + rc = lpfc_bsg_get_ras_config(job); + break; + case LPFC_BSG_VENDOR_RAS_SET_CONFIG: + rc = lpfc_bsg_set_ras_config(job); + break; default: rc = -EINVAL; bsg_reply->reply_payload_rcv_len = 0; @@ -5368,7 +5702,7 @@ lpfc_bsg_hst_vendor(struct bsg_job *job) /** * lpfc_bsg_request - handle a bsg request from the FC transport - * @job: fc_bsg_job to handle + * @job: bsg_job to handle **/ int lpfc_bsg_request(struct bsg_job *job) @@ -5402,7 +5736,7 @@ lpfc_bsg_request(struct bsg_job *job) /** * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport - * @job: fc_bsg_job that has timed out + * @job: bsg_job that has timed out * * This function just aborts the job's IOCB. The aborted IOCB will return to * the waiting function which will handle passing the error back to userspace |