diff options
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_os.c')
-rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_os.c | 155 |
1 files changed, 127 insertions, 28 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index d627355303d7..89ba015c5d7e 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -33,6 +33,12 @@ static int logging_level; module_param(logging_level, int, 0); MODULE_PARM_DESC(logging_level, " bits for enabling additional logging info (default=0)"); +static int max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES; +module_param(max_sgl_entries, int, 0444); +MODULE_PARM_DESC(max_sgl_entries, + "Preferred max number of SG entries to be used for a single I/O\n" + "The actual value will be determined by the driver\n" + "(Minimum=256, Maximum=2048, default=256)"); /* Forward declarations*/ static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event, @@ -424,6 +430,7 @@ void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc) tgt_priv->io_throttle_enabled = 0; tgt_priv->io_divert = 0; tgt_priv->throttle_group = NULL; + tgt_priv->wslen = 0; if (tgtdev->host_exposed) atomic_set(&tgt_priv->block_io, 1); } @@ -1034,6 +1041,19 @@ mpi3mr_update_sdev(struct scsi_device *sdev, void *data) void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc) { struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; + struct mpi3mr_stgt_priv_data *tgt_priv; + + dprint_reset(mrioc, "refresh target devices: check for removals\n"); + list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, + list) { + if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) && + tgtdev->host_exposed && tgtdev->starget && + tgtdev->starget->hostdata) { + tgt_priv = tgtdev->starget->hostdata; + tgt_priv->dev_removed = 1; + atomic_set(&tgt_priv->block_io, 0); + } + } list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, list) { @@ -1102,6 +1122,18 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc, tgtdev->io_throttle_enabled = (flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0; + switch (flags & MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_MASK) { + case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_256_LB: + tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_256_BLKS; + break; + case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_2048_LB: + tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_2048_BLKS; + break; + case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_NO_LIMIT: + default: + tgtdev->wslen = 0; + break; + } if (tgtdev->starget && tgtdev->starget->hostdata) { scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) @@ -1113,6 +1145,7 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc, tgtdev->io_throttle_enabled; if (is_added == true) atomic_set(&scsi_tgt_priv_data->block_io, 0); + scsi_tgt_priv_data->wslen = tgtdev->wslen; } switch (dev_pg0->access_status) { @@ -3413,7 +3446,7 @@ static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc, scsi_bufflen(scmd)); return -ENOMEM; } - if (sges_left > MPI3MR_SG_DEPTH) { + if (sges_left > mrioc->max_sgl_entries) { sdev_printk(KERN_ERR, scmd->device, "scsi_dma_map returned unsupported sge count %d!\n", sges_left); @@ -3934,6 +3967,48 @@ void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout) } /** + * mpi3mr_setup_divert_ws - Setup Divert IO flag for write same + * @mrioc: Adapter instance reference + * @scmd: SCSI command reference + * @scsiio_req: MPI3 SCSI IO request + * @scsiio_flags: Pointer to MPI3 SCSI IO Flags + * @wslen: write same max length + * + * Gets values of unmap, ndob and number of blocks from write + * same scsi io and based on these values it sets divert IO flag + * and reason for diverting IO to firmware. + * + * Return: Nothing + */ +static inline void mpi3mr_setup_divert_ws(struct mpi3mr_ioc *mrioc, + struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req, + u32 *scsiio_flags, u16 wslen) +{ + u8 unmap = 0, ndob = 0; + u8 opcode = scmd->cmnd[0]; + u32 num_blocks = 0; + u16 sa = (scmd->cmnd[8] << 8) | (scmd->cmnd[9]); + + if (opcode == WRITE_SAME_16) { + unmap = scmd->cmnd[1] & 0x08; + ndob = scmd->cmnd[1] & 0x01; + num_blocks = get_unaligned_be32(scmd->cmnd + 10); + } else if ((opcode == VARIABLE_LENGTH_CMD) && (sa == WRITE_SAME_32)) { + unmap = scmd->cmnd[10] & 0x08; + ndob = scmd->cmnd[10] & 0x01; + num_blocks = get_unaligned_be32(scmd->cmnd + 28); + } else + return; + + if ((unmap) && (ndob) && (num_blocks > wslen)) { + scsiio_req->msg_flags |= + MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE; + *scsiio_flags |= + MPI3_SCSIIO_FLAGS_DIVERT_REASON_WRITE_SAME_TOO_LARGE; + } +} + +/** * mpi3mr_eh_host_reset - Host reset error handling callback * @scmd: SCSI command reference * @@ -4430,7 +4505,6 @@ static int mpi3mr_target_alloc(struct scsi_target *starget) unsigned long flags; int retval = 0; struct sas_rphy *rphy = NULL; - bool update_stgt_priv_data = false; scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL); if (!scsi_tgt_priv_data) @@ -4439,39 +4513,50 @@ static int mpi3mr_target_alloc(struct scsi_target *starget) starget->hostdata = scsi_tgt_priv_data; spin_lock_irqsave(&mrioc->tgtdev_lock, flags); - if (starget->channel == mrioc->scsi_device_channel) { tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); - if (tgt_dev && !tgt_dev->is_hidden) - update_stgt_priv_data = true; - else + if (tgt_dev && !tgt_dev->is_hidden) { + scsi_tgt_priv_data->starget = starget; + scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle; + scsi_tgt_priv_data->perst_id = tgt_dev->perst_id; + scsi_tgt_priv_data->dev_type = tgt_dev->dev_type; + scsi_tgt_priv_data->tgt_dev = tgt_dev; + tgt_dev->starget = starget; + atomic_set(&scsi_tgt_priv_data->block_io, 0); + retval = 0; + if ((tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_PCIE) && + ((tgt_dev->dev_spec.pcie_inf.dev_info & + MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == + MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) && + ((tgt_dev->dev_spec.pcie_inf.dev_info & + MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_MASK) != + MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_0)) + scsi_tgt_priv_data->dev_nvme_dif = 1; + scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled; + scsi_tgt_priv_data->wslen = tgt_dev->wslen; + if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD) + scsi_tgt_priv_data->throttle_group = tgt_dev->dev_spec.vd_inf.tg; + } else retval = -ENXIO; } else if (mrioc->sas_transport_enabled && !starget->channel) { rphy = dev_to_rphy(starget->dev.parent); tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc, rphy->identify.sas_address, rphy); if (tgt_dev && !tgt_dev->is_hidden && !tgt_dev->non_stl && - (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA)) - update_stgt_priv_data = true; - else + (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA)) { + scsi_tgt_priv_data->starget = starget; + scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle; + scsi_tgt_priv_data->perst_id = tgt_dev->perst_id; + scsi_tgt_priv_data->dev_type = tgt_dev->dev_type; + scsi_tgt_priv_data->tgt_dev = tgt_dev; + scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled; + scsi_tgt_priv_data->wslen = tgt_dev->wslen; + tgt_dev->starget = starget; + atomic_set(&scsi_tgt_priv_data->block_io, 0); + retval = 0; + } else retval = -ENXIO; } - - if (update_stgt_priv_data) { - scsi_tgt_priv_data->starget = starget; - scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle; - scsi_tgt_priv_data->perst_id = tgt_dev->perst_id; - scsi_tgt_priv_data->dev_type = tgt_dev->dev_type; - scsi_tgt_priv_data->tgt_dev = tgt_dev; - tgt_dev->starget = starget; - atomic_set(&scsi_tgt_priv_data->block_io, 0); - retval = 0; - scsi_tgt_priv_data->io_throttle_enabled = - tgt_dev->io_throttle_enabled; - if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD) - scsi_tgt_priv_data->throttle_group = - tgt_dev->dev_spec.vd_inf.tg; - } spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); return retval; @@ -4732,6 +4817,10 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost, mpi3mr_setup_eedp(mrioc, scmd, scsiio_req); + if (stgt_priv_data->wslen) + mpi3mr_setup_divert_ws(mrioc, scmd, scsiio_req, &scsiio_flags, + stgt_priv_data->wslen); + memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len); scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd)); scsiio_req->dev_handle = cpu_to_le16(dev_handle); @@ -4818,10 +4907,10 @@ static const struct scsi_host_template mpi3mr_driver_template = { .no_write_same = 1, .can_queue = 1, .this_id = -1, - .sg_tablesize = MPI3MR_SG_DEPTH, + .sg_tablesize = MPI3MR_DEFAULT_SGL_ENTRIES, /* max xfer supported is 1M (2K in 512 byte sized sectors) */ - .max_sectors = 2048, + .max_sectors = (MPI3MR_DEFAULT_MAX_IO_SIZE / 512), .cmd_per_lun = MPI3MR_MAX_CMDS_LUN, .max_segment_size = 0xffffffff, .track_queue_depth = 1, @@ -5004,6 +5093,16 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id) mrioc->pdev = pdev; mrioc->stop_bsgs = 1; + mrioc->max_sgl_entries = max_sgl_entries; + if (max_sgl_entries > MPI3MR_MAX_SGL_ENTRIES) + mrioc->max_sgl_entries = MPI3MR_MAX_SGL_ENTRIES; + else if (max_sgl_entries < MPI3MR_DEFAULT_SGL_ENTRIES) + mrioc->max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES; + else { + mrioc->max_sgl_entries /= MPI3MR_DEFAULT_SGL_ENTRIES; + mrioc->max_sgl_entries *= MPI3MR_DEFAULT_SGL_ENTRIES; + } + /* init shost parameters */ shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH; shost->max_lun = -1; @@ -5068,7 +5167,7 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id) shost->nr_maps = 3; shost->can_queue = mrioc->max_host_ios; - shost->sg_tablesize = MPI3MR_SG_DEPTH; + shost->sg_tablesize = mrioc->max_sgl_entries; shost->max_id = mrioc->facts.max_perids + 1; retval = scsi_add_host(shost, &pdev->dev); |