diff options
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 3 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 87 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 42 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 2 |
4 files changed, 123 insertions, 11 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 0c6a56b24c6e..b5a765b73c76 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -2214,6 +2214,7 @@ struct megasas_irq_context { struct irq_poll irqpoll; bool irq_poll_scheduled; bool irq_line_enable; + atomic_t in_used; }; struct MR_DRV_SYSTEM_INFO { @@ -2448,6 +2449,7 @@ struct megasas_instance { bool support_pci_lane_margining; u8 low_latency_index_start; int perf_mode; + int iopoll_q_count; }; struct MR_LD_VF_MAP { @@ -2728,5 +2730,6 @@ void megasas_init_debugfs(void); void megasas_exit_debugfs(void); void megasas_setup_debugfs(struct megasas_instance *instance); void megasas_destroy_debugfs(struct megasas_instance *instance); +int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num); #endif /*LSI_MEGARAID_SAS_H */ diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 63a4f48bdc75..25673d0ee524 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -114,6 +114,15 @@ unsigned int enable_sdev_max_qd; module_param(enable_sdev_max_qd, int, 0444); MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0"); +int poll_queues; +module_param(poll_queues, int, 0444); +MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t" + "This parameter is effective only if host_tagset_enable=1 &\n\t\t" + "It is not applicable for MFI_SERIES. &\n\t\t" + "Driver will work in latency mode. &\n\t\t" + "High iops queues are not allocated &\n\t\t" + ); + int host_tagset_enable = 1; module_param(host_tagset_enable, int, 0444); MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)"); @@ -207,6 +216,7 @@ static bool support_pci_lane_margining; static spinlock_t poll_aen_lock; extern struct dentry *megasas_debugfs_root; +extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num); void megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, @@ -3127,14 +3137,37 @@ megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, static int megasas_map_queues(struct Scsi_Host *shost) { struct megasas_instance *instance; + int qoff = 0, offset; + struct blk_mq_queue_map *map; instance = (struct megasas_instance *)shost->hostdata; if (shost->nr_hw_queues == 1) return 0; - return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT], - instance->pdev, instance->low_latency_index_start); + offset = instance->low_latency_index_start; + + /* Setup Default hctx */ + map = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; + map->nr_queues = instance->msix_vectors - offset; + map->queue_offset = 0; + blk_mq_pci_map_queues(map, instance->pdev, offset); + qoff += map->nr_queues; + offset += map->nr_queues; + + /* Setup Poll hctx */ + map = &shost->tag_set.map[HCTX_TYPE_POLL]; + map->nr_queues = instance->iopoll_q_count; + if (map->nr_queues) { + /* + * The poll queue(s) doesn't have an IRQ (and hence IRQ + * affinity), so use the regular blk-mq cpu mapping + */ + map->queue_offset = qoff; + blk_mq_map_queues(map); + } + + return 0; } static void megasas_aen_polling(struct work_struct *work); @@ -3446,6 +3479,7 @@ static struct scsi_host_template megasas_template = { .shost_attrs = megaraid_host_attrs, .bios_param = megasas_bios_param, .map_queues = megasas_map_queues, + .mq_poll = megasas_blk_mq_poll, .change_queue_depth = scsi_change_queue_depth, .max_segment_size = 0xffffffff, }; @@ -5834,13 +5868,16 @@ __megasas_alloc_irq_vectors(struct megasas_instance *instance) irq_flags = PCI_IRQ_MSIX; if (instance->smp_affinity_enable) - irq_flags |= PCI_IRQ_AFFINITY; + irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; else descp = NULL; + /* Do not allocate msix vectors for poll_queues. + * msix_vectors is always within a range of FW supported reply queue. + */ i = pci_alloc_irq_vectors_affinity(instance->pdev, instance->low_latency_index_start, - instance->msix_vectors, irq_flags, descp); + instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); return i; } @@ -5856,10 +5893,30 @@ megasas_alloc_irq_vectors(struct megasas_instance *instance) int i; unsigned int num_msix_req; + instance->iopoll_q_count = 0; + if ((instance->adapter_type != MFI_SERIES) && + poll_queues) { + + instance->perf_mode = MR_LATENCY_PERF_MODE; + instance->low_latency_index_start = 1; + + /* reserve for default and non-mananged pre-vector. */ + if (instance->msix_vectors > (poll_queues + 2)) + instance->iopoll_q_count = poll_queues; + else + instance->iopoll_q_count = 0; + + num_msix_req = num_online_cpus() + instance->low_latency_index_start; + instance->msix_vectors = min(num_msix_req, + instance->msix_vectors); + + } + i = __megasas_alloc_irq_vectors(instance); - if ((instance->perf_mode == MR_BALANCED_PERF_MODE) && - (i != instance->msix_vectors)) { + if (((instance->perf_mode == MR_BALANCED_PERF_MODE) + || instance->iopoll_q_count) && + (i != (instance->msix_vectors - instance->iopoll_q_count))) { if (instance->msix_vectors) pci_free_irq_vectors(instance->pdev); /* Disable Balanced IOPS mode and try realloc vectors */ @@ -5870,12 +5927,15 @@ megasas_alloc_irq_vectors(struct megasas_instance *instance) instance->msix_vectors = min(num_msix_req, instance->msix_vectors); + instance->iopoll_q_count = 0; i = __megasas_alloc_irq_vectors(instance); } dev_info(&instance->pdev->dev, - "requested/available msix %d/%d\n", instance->msix_vectors, i); + "requested/available msix %d/%d poll_queue %d\n", + instance->msix_vectors - instance->iopoll_q_count, + i, instance->iopoll_q_count); if (i > 0) instance->msix_vectors = i; @@ -6841,12 +6901,18 @@ static int megasas_io_attach(struct megasas_instance *instance) instance->smp_affinity_enable) { host->host_tagset = 1; host->nr_hw_queues = instance->msix_vectors - - instance->low_latency_index_start; + instance->low_latency_index_start + instance->iopoll_q_count; + if (instance->iopoll_q_count) + host->nr_maps = 3; + } else { + instance->iopoll_q_count = 0; } dev_info(&instance->pdev->dev, - "Max firmware commands: %d shared with nr_hw_queues = %d\n", - instance->max_fw_cmds, host->nr_hw_queues); + "Max firmware commands: %d shared with default " + "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, + host->nr_hw_queues - instance->iopoll_q_count, + instance->iopoll_q_count); /* * Notify the mid-layer about the new controller */ @@ -8859,6 +8925,7 @@ static int __init megasas_init(void) msix_vectors = 1; rdpq_enable = 0; dual_qdepth_disable = 1; + poll_queues = 0; } /* diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index f3448567ce28..2221175ae051 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -713,6 +713,8 @@ megasas_alloc_reply_fusion(struct megasas_instance *instance) fusion = instance->ctrl_context; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + count += instance->iopoll_q_count; + fusion->reply_frames_desc_pool = dma_pool_create("mr_reply", &instance->pdev->dev, fusion->reply_alloc_sz * count, 16, 0); @@ -807,6 +809,7 @@ megasas_alloc_rdpq_fusion(struct megasas_instance *instance) } msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + msix_count += instance->iopoll_q_count; fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq", &instance->pdev->dev, @@ -1157,7 +1160,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance) MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); - IOCInitMessage->HostMSIxVectors = instance->msix_vectors; + IOCInitMessage->HostMSIxVectors = instance->msix_vectors + instance->iopoll_q_count; IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; time = ktime_get_real(); @@ -1851,6 +1854,8 @@ megasas_init_adapter_fusion(struct megasas_instance *instance) sizeof(union MPI2_SGE_IO_UNION))/16; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + count += instance->iopoll_q_count; + for (i = 0 ; i < count; i++) fusion->last_reply_idx[i] = 0; @@ -1863,6 +1868,9 @@ megasas_init_adapter_fusion(struct megasas_instance *instance) MEGASAS_FUSION_IOCTL_CMDS); sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); + for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) + atomic_set(&fusion->busy_mq_poll[i], 0); + if (megasas_alloc_ioc_init_frame(instance)) return 1; @@ -3530,6 +3538,9 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) return IRQ_NONE; + if (irq_context && !atomic_add_unless(&irq_context->in_used, 1, 1)) + return 0; + num_completed = 0; while (d_val.u.low != cpu_to_le32(UINT_MAX) && @@ -3644,6 +3655,7 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, irq_context->irq_line_enable = true; irq_poll_sched(&irq_context->irqpoll); } + atomic_dec(&irq_context->in_used); return num_completed; } } @@ -3661,9 +3673,35 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, instance->reply_post_host_index_addr[0]); megasas_check_and_restore_queue_depth(instance); } + + if (irq_context) + atomic_dec(&irq_context->in_used); + return num_completed; } +int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) +{ + + struct megasas_instance *instance; + int num_entries = 0; + struct fusion_context *fusion; + + instance = (struct megasas_instance *)shost->hostdata; + + fusion = instance->ctrl_context; + + queue_num = queue_num + instance->low_latency_index_start; + + if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1)) + return 0; + + num_entries = complete_cmd_fusion(instance, queue_num, NULL); + atomic_dec(&fusion->busy_mq_poll[queue_num]); + + return num_entries; +} + /** * megasas_enable_irq_poll() - enable irqpoll * @instance: Adapter soft state @@ -4194,6 +4232,8 @@ void megasas_reset_reply_desc(struct megasas_instance *instance) fusion = instance->ctrl_context; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + count += instance->iopoll_q_count; + for (i = 0 ; i < count ; i++) { fusion->last_reply_idx[i] = 0; reply_desc = fusion->reply_frames_desc[i]; diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index 30de4b01f703..ce84f811e5e1 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -1303,6 +1303,8 @@ struct fusion_context { u8 *sense; dma_addr_t sense_phys_addr; + atomic_t busy_mq_poll[MAX_MSIX_QUEUES_FUSION]; + dma_addr_t reply_frames_desc_phys[MAX_MSIX_QUEUES_FUSION]; union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc[MAX_MSIX_QUEUES_FUSION]; struct rdpq_alloc_detail rdpq_tracker[RDPQ_MAX_CHUNK_COUNT]; |