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path: root/drivers/scsi/mpi3mr/mpi3mr_os.c
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Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_os.c')
-rw-r--r--drivers/scsi/mpi3mr/mpi3mr_os.c155
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);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-11 22:16:19 +0300