diff options
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_app.c')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_app.c | 137 |
1 files changed, 126 insertions, 11 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 10b8e4dc64f8..f36663613950 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -12,23 +12,98 @@ #include <uapi/scsi/scsi_bsg_mpi3mr.h> /** - * mpi3mr_alloc_trace_buffer: Allocate trace buffer + * mpi3mr_alloc_trace_buffer: Allocate segmented trace buffer * @mrioc: Adapter instance reference * @trace_size: Trace buffer size * - * Allocate trace buffer + * Allocate either segmented memory pools or contiguous buffer + * based on the controller capability for the host trace + * buffer. + * * Return: 0 on success, non-zero on failure. */ static int mpi3mr_alloc_trace_buffer(struct mpi3mr_ioc *mrioc, u32 trace_size) { struct diag_buffer_desc *diag_buffer = &mrioc->diag_buffers[0]; + int i, sz; + u64 *diag_buffer_list = NULL; + dma_addr_t diag_buffer_list_dma; + u32 seg_count; + + if (mrioc->seg_tb_support) { + seg_count = (trace_size) / MPI3MR_PAGE_SIZE_4K; + trace_size = seg_count * MPI3MR_PAGE_SIZE_4K; + + diag_buffer_list = dma_alloc_coherent(&mrioc->pdev->dev, + sizeof(u64) * seg_count, + &diag_buffer_list_dma, GFP_KERNEL); + if (!diag_buffer_list) + return -1; + + mrioc->num_tb_segs = seg_count; + + sz = sizeof(struct segments) * seg_count; + mrioc->trace_buf = kzalloc(sz, GFP_KERNEL); + if (!mrioc->trace_buf) + goto trace_buf_failed; + + mrioc->trace_buf_pool = dma_pool_create("trace_buf pool", + &mrioc->pdev->dev, MPI3MR_PAGE_SIZE_4K, MPI3MR_PAGE_SIZE_4K, + 0); + if (!mrioc->trace_buf_pool) { + ioc_err(mrioc, "trace buf pool: dma_pool_create failed\n"); + goto trace_buf_pool_failed; + } - diag_buffer->addr = dma_alloc_coherent(&mrioc->pdev->dev, - trace_size, &diag_buffer->dma_addr, GFP_KERNEL); - if (diag_buffer->addr) { - dprint_init(mrioc, "trace diag buffer is allocated successfully\n"); + for (i = 0; i < seg_count; i++) { + mrioc->trace_buf[i].segment = + dma_pool_zalloc(mrioc->trace_buf_pool, GFP_KERNEL, + &mrioc->trace_buf[i].segment_dma); + diag_buffer_list[i] = + (u64) mrioc->trace_buf[i].segment_dma; + if (!diag_buffer_list[i]) + goto tb_seg_alloc_failed; + } + + diag_buffer->addr = diag_buffer_list; + diag_buffer->dma_addr = diag_buffer_list_dma; + diag_buffer->is_segmented = true; + + dprint_init(mrioc, "segmented trace diag buffer\n" + "is allocated successfully seg_count:%d\n", seg_count); return 0; + } else { + diag_buffer->addr = dma_alloc_coherent(&mrioc->pdev->dev, + trace_size, &diag_buffer->dma_addr, GFP_KERNEL); + if (diag_buffer->addr) { + dprint_init(mrioc, "trace diag buffer is allocated successfully\n"); + return 0; + } + return -1; } + +tb_seg_alloc_failed: + if (mrioc->trace_buf_pool) { + for (i = 0; i < mrioc->num_tb_segs; i++) { + if (mrioc->trace_buf[i].segment) { + dma_pool_free(mrioc->trace_buf_pool, + mrioc->trace_buf[i].segment, + mrioc->trace_buf[i].segment_dma); + mrioc->trace_buf[i].segment = NULL; + } + mrioc->trace_buf[i].segment = NULL; + } + dma_pool_destroy(mrioc->trace_buf_pool); + mrioc->trace_buf_pool = NULL; + } +trace_buf_pool_failed: + kfree(mrioc->trace_buf); + mrioc->trace_buf = NULL; +trace_buf_failed: + if (diag_buffer_list) + dma_free_coherent(&mrioc->pdev->dev, + sizeof(u64) * mrioc->num_tb_segs, + diag_buffer_list, diag_buffer_list_dma); return -1; } @@ -100,8 +175,9 @@ retry_trace: dprint_init(mrioc, "trying to allocate trace diag buffer of size = %dKB\n", trace_size / 1024); - if (get_order(trace_size) > MAX_PAGE_ORDER || + if ((!mrioc->seg_tb_support && (get_order(trace_size) > MAX_PAGE_ORDER)) || mpi3mr_alloc_trace_buffer(mrioc, trace_size)) { + retry = true; trace_size -= trace_dec_size; dprint_init(mrioc, "trace diag buffer allocation failed\n" @@ -161,6 +237,12 @@ int mpi3mr_issue_diag_buf_post(struct mpi3mr_ioc *mrioc, u8 prev_status; int retval = 0; + if (diag_buffer->disabled_after_reset) { + dprint_bsg_err(mrioc, "%s: skipping diag buffer posting\n" + "as it is disabled after reset\n", __func__); + return -1; + } + memset(&diag_buf_post_req, 0, sizeof(diag_buf_post_req)); mutex_lock(&mrioc->init_cmds.mutex); if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { @@ -177,8 +259,12 @@ int mpi3mr_issue_diag_buf_post(struct mpi3mr_ioc *mrioc, diag_buf_post_req.address = le64_to_cpu(diag_buffer->dma_addr); diag_buf_post_req.length = le32_to_cpu(diag_buffer->size); - dprint_bsg_info(mrioc, "%s: posting diag buffer type %d\n", __func__, - diag_buffer->type); + if (diag_buffer->is_segmented) + diag_buf_post_req.msg_flags |= MPI3_DIAG_BUFFER_POST_MSGFLAGS_SEGMENTED; + + dprint_bsg_info(mrioc, "%s: posting diag buffer type %d segmented:%d\n", __func__, + diag_buffer->type, diag_buffer->is_segmented); + prev_status = diag_buffer->status; diag_buffer->status = MPI3MR_HDB_BUFSTATUS_POSTED_UNPAUSED; init_completion(&mrioc->init_cmds.done); @@ -2339,6 +2425,7 @@ static long mpi3mr_bsg_process_mpt_cmds(struct bsg_job *job) } if (!mrioc->ioctl_sges_allocated) { + mutex_unlock(&mrioc->bsg_cmds.mutex); dprint_bsg_err(mrioc, "%s: DMA memory was not allocated\n", __func__); return -ENOMEM; @@ -2951,6 +3038,7 @@ void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc) .max_hw_sectors = MPI3MR_MAX_APP_XFER_SECTORS, .max_segments = MPI3MR_MAX_APP_XFER_SEGMENTS, }; + struct request_queue *q; device_initialize(bsg_dev); @@ -2966,14 +3054,17 @@ void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc) return; } - mrioc->bsg_queue = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), &lim, + q = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), &lim, mpi3mr_bsg_request, NULL, 0); - if (IS_ERR(mrioc->bsg_queue)) { + if (IS_ERR(q)) { ioc_err(mrioc, "%s: bsg registration failed\n", dev_name(bsg_dev)); device_del(bsg_dev); put_device(bsg_dev); + return; } + + mrioc->bsg_queue = q; } /** @@ -3057,6 +3148,29 @@ reply_queue_count_show(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR_RO(reply_queue_count); /** + * reply_qfull_count_show - Show reply qfull count + * @dev: class device + * @attr: Device attributes + * @buf: Buffer to copy + * + * Retrieves the current value of the reply_qfull_count from the mrioc structure and + * formats it as a string for display. + * + * Return: sysfs_emit() return + */ +static ssize_t +reply_qfull_count_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct mpi3mr_ioc *mrioc = shost_priv(shost); + + return sysfs_emit(buf, "%u\n", atomic_read(&mrioc->reply_qfull_count)); +} + +static DEVICE_ATTR_RO(reply_qfull_count); + +/** * logging_level_show - Show controller debug level * @dev: class device * @attr: Device attributes @@ -3148,6 +3262,7 @@ static struct attribute *mpi3mr_host_attrs[] = { &dev_attr_fw_queue_depth.attr, &dev_attr_op_req_q_count.attr, &dev_attr_reply_queue_count.attr, + &dev_attr_reply_qfull_count.attr, &dev_attr_logging_level.attr, &dev_attr_adp_state.attr, NULL, |