From: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
The field contains more bits than just the one
to indicate whether scsi prefetch should be turned on.
Signed-off-by: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
---
drivers/scsi/hpsa.c | 14 +++++++-------
drivers/scsi/hpsa_cmd.h | 3 ++-
2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 7256b29..542d4cb 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4384,15 +4384,15 @@ static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
return true;
}
-/* Need to enable prefetch in the SCSI core for 6400 in x86 */
-static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h)
+static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
{
#ifdef CONFIG_X86
- u32 prefetch;
+ /* Need to enable prefetch in the SCSI core for 6400 in x86 */
+ u32 driver_support;
- prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
- prefetch |= 0x100;
- writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
+ driver_support = readl(&(h->cfgtable->driver_support));
+ driver_support |= ENABLE_SCSI_PREFETCH;
+ writel(driver_support, &(h->cfgtable->driver_support));
#endif
}
@@ -4503,7 +4503,7 @@ static int hpsa_pci_init(struct ctlr_info *h)
err = -ENODEV;
goto err_out_free_res;
}
- hpsa_enable_scsi_prefetch(h);
+ hpsa_set_driver_support_bits(h);
hpsa_p600_dma_prefetch_quirk(h);
err = hpsa_enter_simple_mode(h);
if (err)
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index a894f2e..5158709 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -356,7 +356,8 @@ struct CfgTable {
u32 TransMethodOffset;
u8 ServerName[16];
u32 HeartBeat;
- u32 SCSI_Prefetch;
+ u32 driver_support;
+#define ENABLE_SCSI_PREFETCH 0x100
u32 MaxScatterGatherElements;
u32 MaxLogicalUnits;
u32 MaxPhysicalDevices;
--
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