No functional change. Code refactor.
Signed-off-by: Shivasharan S <shivasharan.srikanteshw...@broadcom.com>
Signed-off-by: Kashyap Desai <kashyap.de...@broadcom.com>
Reviewed-by: Hannes Reinecke <h...@suse.com>
Reviewed-by: Tomas Henzl <the...@redhat.com>
---
drivers/scsi/megaraid/megaraid_sas_fusion.c | 175 ++++++++++++++++------------
1 file changed, 100 insertions(+), 75 deletions(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c
b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 54728b3..514c306 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -1819,6 +1819,73 @@ static void megasas_stream_detect(struct
megasas_instance *instance,
}
/**
+ * megasas_set_raidflag_cpu_affinity - This function sets the cpu
+ * affinity (cpu of the controller) and raid_flags in the raid context
+ * based on IO type.
+ *
+ * @praid_context: IO RAID context
+ * @raid: LD raid map
+ * @fp_possible: Is fast path possible?
+ * @is_read: Is read IO?
+ *
+ */
+static void
+megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
+ struct MR_LD_RAID *raid, bool fp_possible,
+ u8 is_read)
+{
+ u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
+ struct RAID_CONTEXT_G35 *rctx_g35;
+
+ rctx_g35 = &praid_context->raid_context_g35;
+ if (fp_possible) {
+ if (is_read) {
+ if ((raid->cpuAffinity.pdRead.cpu0) &&
+ (raid->cpuAffinity.pdRead.cpu1))
+ cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
+ else if (raid->cpuAffinity.pdRead.cpu1)
+ cpu_sel = MR_RAID_CTX_CPUSEL_1;
+ } else {
+ if ((raid->cpuAffinity.pdWrite.cpu0) &&
+ (raid->cpuAffinity.pdWrite.cpu1))
+ cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
+ else if (raid->cpuAffinity.pdWrite.cpu1)
+ cpu_sel = MR_RAID_CTX_CPUSEL_1;
+ /* Fast path cache by pass capable R0/R1 VD */
+ if ((raid->level <= 1) &&
+ (raid->capability.fp_cache_bypass_capable)) {
+ rctx_g35->routing_flags.bits.sld = 1;
+ rctx_g35->raid_flags =
+ (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
+ <<
MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
+ }
+ }
+ } else {
+ if (is_read) {
+ if ((raid->cpuAffinity.ldRead.cpu0) &&
+ (raid->cpuAffinity.ldRead.cpu1))
+ cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
+ else if (raid->cpuAffinity.ldRead.cpu1)
+ cpu_sel = MR_RAID_CTX_CPUSEL_1;
+ } else {
+ if ((raid->cpuAffinity.ldWrite.cpu0) &&
+ (raid->cpuAffinity.ldWrite.cpu1))
+ cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
+ else if (raid->cpuAffinity.ldWrite.cpu1)
+ cpu_sel = MR_RAID_CTX_CPUSEL_1;
+
+ if (rctx_g35->stream_detected &&
+ (raid->level == 5) &&
+ (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
+ (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
+ cpu_sel = MR_RAID_CTX_CPUSEL_0;
+ }
+ }
+
+ rctx_g35->routing_flags.bits.cpu_sel = cpu_sel;
+}
+
+/**
* megasas_build_ldio_fusion - Prepares IOs to devices
* @instance: Adapter soft state
* @scp: SCSI command
@@ -1832,8 +1899,10 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
struct scsi_cmnd *scp,
struct megasas_cmd_fusion *cmd)
{
- u8 fp_possible;
- u32 start_lba_lo, start_lba_hi, device_id, datalength = 0, ld;
+ bool fp_possible;
+ u16 ld;
+ u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
+ u32 scsi_buff_len;
struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
struct IO_REQUEST_INFO io_info;
@@ -1842,7 +1911,8 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
u8 *raidLUN;
unsigned long spinlock_flags;
union RAID_CONTEXT_UNION *praid_context;
- struct MR_LD_RAID *raid;
+ struct MR_LD_RAID *raid = NULL;
+ struct MR_PRIV_DEVICE *mrdev_priv;
device_id = MEGASAS_DEV_INDEX(scp);
@@ -1858,7 +1928,7 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
start_lba_lo = 0;
start_lba_hi = 0;
- fp_possible = 0;
+ fp_possible = false;
/*
* 6-byte READ(0x08) or WRITE(0x0A) cdb
@@ -1915,7 +1985,8 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
io_info.numBlocks = datalength;
io_info.ldTgtId = device_id;
io_info.r1_alt_dev_handle = MR_PD_INVALID;
- io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
+ scsi_buff_len = scsi_bufflen(scp);
+ io_request->DataLength = cpu_to_le32(scsi_buff_len);
if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
io_info.isRead = 1;
@@ -1927,12 +1998,12 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
io_request->RaidContext.raid_context.reg_lock_flags = 0;
- fp_possible = 0;
+ fp_possible = false;
} else {
if (MR_BuildRaidContext(instance, &io_info,
&io_request->RaidContext.raid_context,
local_map_ptr, &raidLUN))
- fp_possible = io_info.fpOkForIo;
+ fp_possible = (io_info.fpOkForIo > 0) ? true : false;
}
/* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
@@ -1941,6 +2012,8 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
raw_smp_processor_id() % instance->msix_vectors : 0;
+ praid_context = &io_request->RaidContext;
+
if (instance->is_ventura) {
spin_lock_irqsave(&instance->stream_lock, spinlock_flags);
megasas_stream_detect(instance, cmd, &io_info);
@@ -1948,12 +2021,28 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
/* In ventura if stream detected for a read and it is read ahead
* capable make this IO as LDIO
*/
- if (io_request->RaidContext.raid_context_g35.stream_detected &&
- io_info.isRead && io_info.ra_capable)
+ if (praid_context->raid_context_g35.stream_detected &&
+ io_info.isRead && io_info.ra_capable)
fp_possible = false;
- }
- praid_context = &io_request->RaidContext;
+ if (io_info.r1_alt_dev_handle != MR_PD_INVALID) {
+ mrdev_priv = scp->device->hostdata;
+
+ if (atomic_inc_return(&instance->fw_outstanding) >
+ (instance->host->can_queue)) {
+ fp_possible = false;
+ atomic_dec(&instance->fw_outstanding);
+ }
+ }
+
+ /* If raid is NULL, set CPU affinity to default CPU0 */
+ if (raid)
+ megasas_set_raidflag_cpu_affinity(praid_context,
+ raid, fp_possible, io_info.isRead);
+ else
+
praid_context->raid_context_g35.routing_flags.bits.cpu_sel =
+ MR_RAID_CTX_CPUSEL_0;
+ }
if (fp_possible) {
megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
@@ -2016,36 +2105,6 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
io_request->DevHandle = io_info.devHandle;
/* populate the LUN field */
memcpy(io_request->LUN, raidLUN, 8);
- if (instance->is_ventura) {
- if (io_info.isRead) {
- if ((raid->cpuAffinity.pdRead.cpu0) &&
- (raid->cpuAffinity.pdRead.cpu1))
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_FCFS;
- else if (raid->cpuAffinity.pdRead.cpu1)
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_1;
- else
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_0;
- } else {
- if ((raid->cpuAffinity.pdWrite.cpu0)
- && (raid->cpuAffinity.pdWrite.cpu1))
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_FCFS;
- else if (raid->cpuAffinity.pdWrite.cpu1)
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_1;
- else
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_0;
- if
(praid_context->raid_context_g35.routing_flags.bits.sld) {
-
praid_context->raid_context_g35.raid_flags
- =
(MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
- <<
MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
- }
- }
- }
} else {
io_request->RaidContext.raid_context.timeout_value =
cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
@@ -2074,40 +2133,6 @@ megasas_build_ldio_fusion(struct megasas_instance
*instance,
io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = cpu_to_le16(device_id);
- if (instance->is_ventura) {
- if (io_info.isRead) {
- if ((raid->cpuAffinity.ldRead.cpu0)
- && (raid->cpuAffinity.ldRead.cpu1))
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_FCFS;
- else if (raid->cpuAffinity.ldRead.cpu1)
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_1;
- else
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_0;
- } else {
- if ((raid->cpuAffinity.ldWrite.cpu0) &&
- (raid->cpuAffinity.ldWrite.cpu1))
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_FCFS;
- else if (raid->cpuAffinity.ldWrite.cpu1)
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_1;
- else
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_0;
-
- if
(io_request->RaidContext.raid_context_g35.stream_detected
- && (raid->level == 5) &&
- (raid->writeMode ==
MR_RL_WRITE_THROUGH_MODE)) {
- if
(praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- == MR_RAID_CTX_CPUSEL_FCFS)
-
praid_context->raid_context_g35.routing_flags.bits.cpu_sel
- = MR_RAID_CTX_CPUSEL_0;
- }
- }
- }
} /* Not FP */
}
--
2.8.3
