[PATCH 07/11][SCSI]mpt2sas: For >2TB volumes, DirectDrive support sends I/Os with LBA bit 31 to IR FW instead of DirectDrive

From: Reddy, Sreekanth
Date: Fri Mar 14 2014 - 11:46:17 EST


There was a down casting of the volume max LBA from a U64 to a U32,
which is taken out and now the max LBA is set appropriately to U64.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@xxxxxxx>
---
drivers/scsi/mpt2sas/mpt2sas_scsih.c | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
index 6ae109b..4a0728a 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
@@ -3865,7 +3865,8 @@ _scsih_setup_direct_io(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
struct _raid_device *raid_device, Mpi2SCSIIORequest_t *mpi_request,
u16 smid)
{
- u32 v_lba, p_lba, stripe_off, stripe_unit, column, io_size;
+ u32 p_lba, stripe_off, stripe_unit, column, io_size;
+ u64 v_lba;
u32 stripe_sz, stripe_exp;
u8 num_pds, *cdb_ptr, i;
u8 cdb0 = scmd->cmnd[0];
@@ -3882,12 +3883,17 @@ _scsih_setup_direct_io(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
| cdb_ptr[5])) {
io_size = scsi_bufflen(scmd) >>
raid_device->block_exponent;
- i = (cdb0 < READ_16) ? 2 : 6;
+
/* get virtual lba */
- v_lba = be32_to_cpu(*(__be32 *)(&cdb_ptr[i]));
+ if (cdb0 < READ_16)
+ v_lba = be32_to_cpu(*(__be32 *)(&cdb_ptr[2]));
+ else
+ v_lba = be64_to_cpu(*(__be64 *)(&cdb_ptr[2]));
+
+ i = (cdb0 < READ_16) ? 2 : 6;

if (((u64)v_lba + (u64)io_size - 1) <=
- (u32)raid_device->max_lba) {
+ raid_device->max_lba) {
stripe_sz = raid_device->stripe_sz;
stripe_exp = raid_device->stripe_exponent;
stripe_off = v_lba & (stripe_sz - 1);
--
1.7.1

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