Below special handling is needed for UNMAP commands issued to
NVMe drives,
- On B0 boards, if the parameter list length is greater
than 24 and not 16byte multiple then truncate the
parameter list length to 16byte multiple.
- on A0 boards, if the parameter list length is greater
than block descriptor data length + 8 then truncate the
parameter list length to block descriptor data length + 8
value.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
---
drivers/scsi/mpi3mr/mpi3mr_os.c | 36 ++++++++++++++++++++++++---------
1 file changed, 26 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index e961bb2..2a153df 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -3344,9 +3344,22 @@ static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd)
{
unsigned char *buf;
- u16 param_len, desc_len;
-
- param_len = get_unaligned_be16(scmd->cmnd + 7);
+ u16 param_len, desc_len, trunc_param_len;
+
+ trunc_param_len = param_len = get_unaligned_be16(scmd->cmnd + 7);
+
+ if (mrioc->pdev->revision) {
+ if ((param_len > 24) && ((param_len - 8) & 0xF)) {
+ trunc_param_len -= (param_len - 8) & 0xF;
+ dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
+ dprint_scsi_err(mrioc,
+ "truncating param_len from (%d) to (%d)\n",
+ param_len, trunc_param_len);
+ put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
+ dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
+ }
+ return false;
+ }
if (!param_len) {
ioc_warn(mrioc,
@@ -3406,12 +3419,12 @@ static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc,
}
if (param_len > (desc_len + 8)) {
+ trunc_param_len = desc_len + 8;
scsi_print_command(scmd);
- ioc_warn(mrioc,
- "%s: Truncating param_len(%d) to desc_len+8(%d)\n",
- __func__, param_len, (desc_len + 8));
- param_len = desc_len + 8;
- put_unaligned_be16(param_len, scmd->cmnd + 7);
+ dprint_scsi_err(mrioc,
+ "truncating param_len(%d) to desc_len+8(%d)\n",
+ param_len, trunc_param_len);
+ put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
scsi_print_command(scmd);
}
@@ -3466,6 +3479,7 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost,
u32 scsiio_flags = 0;
struct request *rq = scsi_cmd_to_rq(scmd);
int iprio_class;
+ u8 is_pcie_dev = 0;
sdev_priv_data = scmd->device->hostdata;
if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
@@ -3510,8 +3524,10 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost,
goto out;
}
- if ((scmd->cmnd[0] == UNMAP) &&
- (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE) &&
+ if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE)
+ is_pcie_dev = 1;
+ if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev &&
+ (mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) &&
mpi3mr_check_return_unmap(mrioc, scmd))
goto out;
--
2.27.0
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature
