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authorChandrakanth Patil <chandrakanth.patil@broadcom.com>2019-06-25 16:34:28 +0530
committerMartin K. Petersen <martin.petersen@oracle.com>2019-06-27 00:07:35 -0400
commit49f2bf1071f06a430920888ff2d1a89395a3b6b5 (patch)
tree88f2331d2fecdf4737209c02ec9576fd960a5a6a /drivers/scsi
parenta4413a5859f8a36e9217e808d172e9458ece4ff0 (diff)
downloadlinux-49f2bf1071f06a430920888ff2d1a89395a3b6b5.tar.bz2
scsi: megaraid_sas: RAID1 PCI bandwidth limit algorithm is applicable for only Ventura
RAID1 PCI bandwidth limit algorithm is not applicable to Aero as it's PCIe Gen4 adapter. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_base.c3
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.c24
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.h2
3 files changed, 17 insertions, 12 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index a886de3e3ffb..5244b6eedfec 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5777,6 +5777,9 @@ static int megasas_init_fw(struct megasas_instance *instance)
MR_MAX_RAID_MAP_SIZE_MASK);
}
+ if (instance->adapter_type == VENTURA_SERIES)
+ fusion->pcie_bw_limitation = true;
+
/* Check if MSI-X is supported while in ready state */
msix_enable = (instance->instancet->read_fw_status_reg(instance) &
0x4000000) >> 0x1a;
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 5121d4c6eea3..ad18474f06b7 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -2621,9 +2621,10 @@ static void megasas_stream_detect(struct megasas_instance *instance,
*
*/
static void
-megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
- struct MR_LD_RAID *raid, bool fp_possible,
- u8 is_read, u32 scsi_buff_len)
+megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
+ union RAID_CONTEXT_UNION *praid_context,
+ struct MR_LD_RAID *raid, bool fp_possible,
+ u8 is_read, u32 scsi_buff_len)
{
u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
struct RAID_CONTEXT_G35 *rctx_g35;
@@ -2681,11 +2682,11 @@ megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
* vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
* IO Subtype is not bitmap.
*/
- if ((raid->level == 1) && (!is_read)) {
- if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
- praid_context->raid_context_g35.raid_flags =
- (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
- << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
+ if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
+ (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
+ praid_context->raid_context_g35.raid_flags =
+ (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
+ << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
}
}
@@ -2834,8 +2835,9 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
(instance->host->can_queue)) {
fp_possible = false;
atomic_dec(&instance->fw_outstanding);
- } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
- (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
+ } else if (fusion->pcie_bw_limitation &&
+ ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
+ (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
fp_possible = false;
atomic_dec(&instance->fw_outstanding);
if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
@@ -2860,7 +2862,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
/* If raid is NULL, set CPU affinity to default CPU0 */
if (raid)
- megasas_set_raidflag_cpu_affinity(&io_request->RaidContext,
+ megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
raid, fp_possible, io_info.isRead,
scsi_buff_len);
else
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 98738290c533..b50da3822aa0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -1335,7 +1335,7 @@ struct fusion_context {
dma_addr_t ioc_init_request_phys;
struct MPI2_IOC_INIT_REQUEST *ioc_init_request;
struct megasas_cmd *ioc_init_cmd;
-
+ bool pcie_bw_limitation;
};
union desc_value {