[PATCH 04/11] megaraid_sas: SAS3.5 Generic Megaraid Controllers Stream Detection and IO Coalescing

From: Sasikumar Chandrasekaran
Date: Thu Dec 01 2016 - 14:22:41 EST

From: root <sasikumar.pc@xxxxxxxxxxxx>

Detect sequential IO streams and pass those IOs directly to FW.

This patch is depending on patch 3

Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@xxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas.h | 1 +
drivers/scsi/megaraid/megaraid_sas_base.c | 40 +++++++-
drivers/scsi/megaraid/megaraid_sas_fp.c | 2 +
drivers/scsi/megaraid/megaraid_sas_fusion.c | 151 +++++++++++++++++++++++-----
drivers/scsi/megaraid/megaraid_sas_fusion.h | 123 +++++++++++++++++++++-
5 files changed, 287 insertions(+), 30 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index af94f58..ee6bd5c 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2073,6 +2073,7 @@ struct megasas_instance {
/* used to sync fire the cmd to fw */
spinlock_t hba_lock;
/* used to synch producer, consumer ptrs in dpc */
+ spinlock_t stream_lock;
spinlock_t completion_lock;
struct dma_pool *frame_dma_pool;
struct dma_pool *sense_dma_pool;
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 7c8c313..86f25d5 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5018,7 +5018,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
struct megasas_register_set __iomem *reg_set;
struct megasas_ctrl_info *ctrl_info = NULL;
unsigned long bar_list;
- int i, loop, fw_msix_count = 0;
+ int i, j, loop, fw_msix_count = 0;
struct IOV_111 *iovPtr;
struct fusion_context *fusion;

@@ -5205,6 +5205,33 @@ static int megasas_init_fw(struct megasas_instance *instance)
}

memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
+
+ /* stream detection initialization */
+ if (instance->is_ventura) {
+ fusion->streamDetectByLD =
+ kzalloc(sizeof(PTR_LD_STREAM_DETECT) * MAX_LOGICAL_DRIVES_EXT,
+ GFP_KERNEL);
+ if (!fusion->streamDetectByLD) {
+ dev_err(&instance->pdev->dev,
+ "unable to allocate stream detection for pool of LDs\n");
+ goto fail_get_ld_pd_list;
+ }
+ for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
+ fusion->streamDetectByLD[i] =
+ kmalloc(sizeof(LD_STREAM_DETECT), GFP_KERNEL);
+ if (!fusion->streamDetectByLD[i]) {
+ dev_err(&instance->pdev->dev,
+ "unable to allocate stream detect by LD\n ");
+ for (j = 0; j < i; ++j)
+ kfree(fusion->streamDetectByLD[j]);
+ kfree(fusion->streamDetectByLD);
+ fusion->streamDetectByLD = NULL;
+ goto fail_get_ld_pd_list;
+ }
+ fusion->streamDetectByLD[i]->mruBitMap = MR_STREAM_BITMAP;
+ }
+ }
+
if (megasas_ld_list_query(instance,
MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
megasas_get_ld_list(instance);
@@ -5324,6 +5351,8 @@ static int megasas_init_fw(struct megasas_instance *instance)

return 0;

+fail_get_ld_pd_list:
+ instance->instancet->disable_intr(instance);
fail_get_pd_list:
instance->instancet->disable_intr(instance);
megasas_destroy_irqs(instance);
@@ -5860,6 +5889,7 @@ static int megasas_probe_one(struct pci_dev *pdev,

spin_lock_init(&instance->mfi_pool_lock);
spin_lock_init(&instance->hba_lock);
+ spin_lock_init(&instance->stream_lock);
spin_lock_init(&instance->completion_lock);

mutex_init(&instance->reset_mutex);
@@ -6360,6 +6390,14 @@ static void megasas_detach_one(struct pci_dev *pdev)
if (instance->msix_vectors)
pci_disable_msix(instance->pdev);

+ if (instance->is_ventura) {
+ for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
+ kfree(fusion->streamDetectByLD[i]);
+ kfree(fusion->streamDetectByLD);
+ fusion->streamDetectByLD = NULL;
+ }
+
+
if (instance->ctrl_context) {
megasas_release_fusion(instance);
pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index f237d00..d9483bc 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -935,6 +935,8 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,

ld = MR_TargetIdToLdGet(ldTgtId, map);
raid = MR_LdRaidGet(ld, map);
+ /*check read ahead bit*/
+ io_info->raCapable = raid->capability.raCapable;

/*
* if rowDataSize @RAID map and spanRowDataSize @SPAN INFO are zero
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 7f26b14..3ad929b 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -1704,6 +1704,81 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
}

/**
+ * megasas_stream_detect - stream detection on read and and write IOs
+ * @instance: Adapter soft state
+ * @cmd: Command to be prepared
+ * @io_info: IO Request info
+ *
+ */
+
+/** stream detection on read and and write IOs */
+static void megasas_stream_detect(struct megasas_instance *instance,
+ struct megasas_cmd_fusion *cmd,
+ struct IO_REQUEST_INFO *io_info)
+{
+ struct fusion_context *fusion = instance->ctrl_context;
+ u32 device_id = io_info->ldTgtId;
+ LD_STREAM_DETECT *current_ld_SD = fusion->streamDetectByLD[device_id];
+ u32 *track_stream = &current_ld_SD->mruBitMap, streamNum;
+ u32 shiftedValues, unshiftedValues;
+ u32 indexValueMask, shiftedValuesMask;
+ int i;
+ bool isReadAhead = false;
+ STREAM_DETECT *current_SD;
+ /* find possible stream */
+ for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
+ streamNum = (*track_stream >> (i * BITS_PER_INDEX_STREAM)) &
+ STREAM_MASK;
+ current_SD = &current_ld_SD->streamTrack[streamNum];
+ /* if we found a stream, update the raid
+ * context and also update the mruBitMap
+ */
+ /* boundary condition */
+ if (current_SD->nextSeqLBA &&
+ io_info->ldStartBlock >= current_SD->nextSeqLBA &&
+ (io_info->ldStartBlock <= (current_SD->nextSeqLBA+32)) &&
+ (current_SD->isRead == io_info->isRead)) {
+ if (io_info->ldStartBlock != current_SD->nextSeqLBA &&
+ (!io_info->isRead || !isReadAhead))
+ /*
+ * Once the API availible we need to change this.
+ * At this point we are not allowing any gap
+ */
+ continue;
+ cmd->io_request->RaidContext.raid_context_g35.streamDetected =
+ true;
+ current_SD->nextSeqLBA =
+ io_info->ldStartBlock + io_info->numBlocks;
+ /*
+ * update the mruBitMap LRU
+ */
+ shiftedValuesMask = (1 << i * BITS_PER_INDEX_STREAM) - 1;
+ shiftedValues = ((*track_stream & shiftedValuesMask)
+ << BITS_PER_INDEX_STREAM);
+ indexValueMask = STREAM_MASK << i * BITS_PER_INDEX_STREAM;
+ unshiftedValues =
+ *track_stream & ~(shiftedValuesMask | indexValueMask);
+ *track_stream = unshiftedValues | shiftedValues | streamNum;
+ return;
+
+ }
+
+ }
+ /*
+ * if we did not find any stream, create a new one from the least recently used
+ */
+ streamNum =
+ (*track_stream >> ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
+ STREAM_MASK;
+ current_SD = &current_ld_SD->streamTrack[streamNum];
+ current_SD->isRead = io_info->isRead;
+ current_SD->nextSeqLBA = io_info->ldStartBlock + io_info->numBlocks;
+ *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | streamNum);
+ return;
+
+}
+
+/**
* megasas_build_ldio_fusion - Prepares IOs to devices
* @instance: Adapter soft state
* @scp: SCSI command
@@ -1725,15 +1800,17 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
struct fusion_context *fusion;
struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
u8 *raidLUN;
+ unsigned long spinlock_flags;

device_id = MEGASAS_DEV_INDEX(scp);

fusion = instance->ctrl_context;

io_request = cmd->io_request;
- io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
- io_request->RaidContext.status = 0;
- io_request->RaidContext.exStatus = 0;
+ io_request->RaidContext.raid_context.VirtualDiskTgtId =
+ cpu_to_le16(device_id);
+ io_request->RaidContext.raid_context.status = 0;
+ io_request->RaidContext.raid_context.exStatus = 0;

req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;

@@ -1804,11 +1881,11 @@ static int megasas_create_sg_sense_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.regLockFlags = 0;
+ io_request->RaidContext.raid_context.regLockFlags = 0;
fp_possible = 0;
} else {
if (MR_BuildRaidContext(instance, &io_info,
- &io_request->RaidContext,
+ &io_request->RaidContext.raid_context,
local_map_ptr, &raidLUN))
fp_possible = io_info.fpOkForIo;
}
@@ -1819,6 +1896,18 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
raw_smp_processor_id() % instance->msix_vectors : 0;

+ if (instance->is_ventura) {
+ spin_lock_irqsave(&instance->stream_lock, spinlock_flags);
+ megasas_stream_detect(instance, cmd, &io_info);
+ spin_unlock_irqrestore(&instance->stream_lock, spinlock_flags);
+ /* 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.streamDetected &&
+ io_info.isRead && io_info.raCapable)
+ fp_possible = false;
+ }
+
if (fp_possible) {
megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
local_map_ptr, start_lba_lo);
@@ -1827,15 +1916,15 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
(MPI2_REQ_DESCRIPT_FLAGS_FP_IO
<< MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if (fusion->adapter_type == INVADER_SERIES) {
- if (io_request->RaidContext.regLockFlags ==
+ if (io_request->RaidContext.raid_context.regLockFlags ==
REGION_TYPE_UNUSED)
cmd->request_desc->SCSIIO.RequestFlags =
(MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
- io_request->RaidContext.Type = MPI2_TYPE_CUDA;
- io_request->RaidContext.nseg = 0x1;
+ io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
+ io_request->RaidContext.raid_context.nseg = 0x1;
io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
- io_request->RaidContext.regLockFlags |=
+ io_request->RaidContext.raid_context.regLockFlags |=
(MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
MR_RL_FLAGS_SEQ_NUM_ENABLE);
}
@@ -1862,22 +1951,23 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
/* populate the LUN field */
memcpy(io_request->LUN, raidLUN, 8);
} else {
- io_request->RaidContext.timeoutValue =
+ io_request->RaidContext.raid_context.timeoutValue =
cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
cmd->request_desc->SCSIIO.RequestFlags =
(MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
<< MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if (fusion->adapter_type == INVADER_SERIES) {
if (io_info.do_fp_rlbypass ||
- (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED))
+ (io_request->RaidContext.raid_context.regLockFlags ==
+ REGION_TYPE_UNUSED))
cmd->request_desc->SCSIIO.RequestFlags =
(MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
- io_request->RaidContext.Type = MPI2_TYPE_CUDA;
- io_request->RaidContext.regLockFlags |=
+ io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
+ io_request->RaidContext.raid_context.regLockFlags |=
(MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
MR_RL_FLAGS_SEQ_NUM_ENABLE);
- io_request->RaidContext.nseg = 0x1;
+ io_request->RaidContext.raid_context.nseg = 0x1;
}
io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = cpu_to_le16(device_id);
@@ -1913,7 +2003,7 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
/* get RAID_Context pointer */
- pRAID_Context = &io_request->RaidContext;
+ pRAID_Context = &io_request->RaidContext.raid_context;
/* Check with FW team */
pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
pRAID_Context->regLockRowLBA = 0;
@@ -2000,7 +2090,7 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,

io_request = cmd->io_request;
/* get RAID_Context pointer */
- pRAID_Context = &io_request->RaidContext;
+ pRAID_Context = &io_request->RaidContext.raid_context;
pRAID_Context->regLockFlags = 0;
pRAID_Context->regLockRowLBA = 0;
pRAID_Context->regLockLength = 0;
@@ -2094,9 +2184,9 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
io_request->Control = 0;
io_request->EEDPBlockSize = 0;
io_request->ChainOffset = 0;
- io_request->RaidContext.RAIDFlags = 0;
- io_request->RaidContext.Type = 0;
- io_request->RaidContext.nseg = 0;
+ io_request->RaidContext.raid_context.RAIDFlags = 0;
+ io_request->RaidContext.raid_context.Type = 0;
+ io_request->RaidContext.raid_context.nseg = 0;

memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
/*
@@ -2143,8 +2233,8 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
/* numSGE store lower 8 bit of sge_count.
* numSGEExt store higher 8 bit of sge_count
*/
- io_request->RaidContext.numSGE = sge_count;
- io_request->RaidContext.numSGEExt = (u8)(sge_count >> 8);
+ io_request->RaidContext.raid_context.numSGE = sge_count;
+ io_request->RaidContext.raid_context.numSGEExt = (u8)(sge_count >> 8);

io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);

@@ -2303,8 +2393,8 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
cmd_fusion->scmd->SCp.ptr = NULL;

scmd_local = cmd_fusion->scmd;
- status = scsi_io_req->RaidContext.status;
- extStatus = scsi_io_req->RaidContext.exStatus;
+ status = scsi_io_req->RaidContext.raid_context.status;
+ extStatus = scsi_io_req->RaidContext.raid_context.exStatus;

switch (scsi_io_req->Function) {
case MPI2_FUNCTION_SCSI_TASK_MGMT:
@@ -2337,8 +2427,8 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
/* Map the FW Cmd Status */
map_cmd_status(cmd_fusion, status, extStatus);
- scsi_io_req->RaidContext.status = 0;
- scsi_io_req->RaidContext.exStatus = 0;
+ scsi_io_req->RaidContext.raid_context.status = 0;
+ scsi_io_req->RaidContext.raid_context.exStatus = 0;
if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
atomic_dec(&instance->ldio_outstanding);
megasas_return_cmd_fusion(instance, cmd_fusion);
@@ -3393,7 +3483,7 @@ int megasas_check_mpio_paths(struct megasas_instance *instance,
/* Core fusion reset function */
int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
{
- int retval = SUCCESS, i, convert = 0;
+ int retval = SUCCESS, i, j, convert = 0;
struct megasas_instance *instance;
struct megasas_cmd_fusion *cmd_fusion;
struct fusion_context *fusion;
@@ -3558,6 +3648,15 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
shost_for_each_device(sdev, shost)
megasas_update_sdev_properties(sdev);

+ /* reset stream detection array */
+ if (instance->is_ventura) {
+ for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
+ memset(fusion->streamDetectByLD[j], 0,
+ sizeof(LD_STREAM_DETECT));
+ fusion->streamDetectByLD[j]->mruBitMap = MR_STREAM_BITMAP;
+ }
+ }
+
clear_bit(MEGASAS_FUSION_IN_RESET,
&instance->reset_flags);
instance->instancet->enable_intr(instance);
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 9d22ade..9bb2f40 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -133,12 +133,100 @@ struct RAID_CONTEXT {
u8 resvd2;
};

+/*
+* Raid Context structure which describes ventura MegaRAID specific
+* IO Paramenters ,This resides at offset 0x60 where the SGL normally
+* starts in MPT IO Frames
+*/
+typedef struct _RAID_CONTEXT_G35 {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u16 resvd0:8;
+ u16 nseg:4;
+ u16 Type:4;
+#else
+ u16 Type:4; /* 0x00 */
+ u16 nseg:4; /* 0x00 */
+ u16 resvd0:8;
+#endif
+ u16 timeoutValue; /* 0x02 -0x03 */
+ union {
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u16 setDivert:4;
+ u16 cpuSel:4;
+ u16 log:1;
+ u16 rw:1;
+ u16 sbs:1;
+ u16 sqn:1;
+ u16 fwn:1;
+ u16 c2f:1;
+ u16 sld:1;
+ u16 reserved:1;
+#else
+ u16 reserved:1;
+ u16 sld:1;
+ u16 c2f:1;
+ u16 fwn:1;
+ u16 sqn:1;
+ u16 sbs:1;
+ u16 rw:1;
+ u16 log:1;
+ u16 cpuSel:4;
+ u16 setDivert:4;
+#endif
+ } bits;
+ u16 s;
+ } routingFlags; /* 0x04 -0x05 routing flags */
+
+ u16 VirtualDiskTgtId; /* 0x06 -0x07 */
+
+ u64 regLockRowLBA; /* 0x08 - 0x0F */
+
+ u32 regLockLength; /* 0x10 - 0x13 */
+
+ union {
+ u16 nextLMId; /* 0x14 - 0x15 */
+ u16 peerSMID; /* used for the raid 1/10 fp writes */
+ } smid;
+ u8 exStatus; /* 0x16 : OUT */
+ u8 status; /* 0x17 status */
+
+ u8 RAIDFlags; /* 0x18 resvd[7:6], ioSubType[5:4],
+ * resvd[3:1], preferredCpu[0]
+ */
+ u8 spanArm; /* 0x1C span[7:5], arm[4:0] */
+ u16 configSeqNum; /* 0x1A -0x1B */
+#if defined(__BIG_ENDIAN_BITFIELD) /* 0x1C Ãâ 0x1D */
+ u16 streamDetected:1;
+ u16 reserved:3;
+ u16 numSGE:12;
+#else
+ u16 numSGE:12;
+ u16 reserved:3;
+ u16 streamDetected:1;
+#endif
+ u8 resvd2[2]; /* 0x1E-0x1F */
+} RAID_CONTEXT_G35;
+
+typedef union _RAID_CONTEXT_UNION {
+ struct RAID_CONTEXT raid_context;
+ RAID_CONTEXT_G35 raid_context_g35;
+} RAID_CONTEXT_UNION, *PRAID_CONTEXT_UNION;
+
#define RAID_CTX_SPANARM_ARM_SHIFT (0)
#define RAID_CTX_SPANARM_ARM_MASK (0x1f)

#define RAID_CTX_SPANARM_SPAN_SHIFT (5)
#define RAID_CTX_SPANARM_SPAN_MASK (0xE0)

+/* number of bits per index in U32 TrackStream */
+#define BITS_PER_INDEX_STREAM 4
+#define INVALID_STREAM_NUM 16
+#define MR_STREAM_BITMAP 0x76543210
+#define STREAM_MASK ((1 << BITS_PER_INDEX_STREAM) - 1)
+#define ZERO_LAST_STREAM 0x0fffffff
+#define MAX_STREAMS_TRACKED 8
+
/*
* define region lock types
*/
@@ -409,7 +497,7 @@ struct MPI2_RAID_SCSI_IO_REQUEST {
u8 LUN[8]; /* 0x34 */
__le32 Control; /* 0x3C */
union MPI2_SCSI_IO_CDB_UNION CDB; /* 0x40 */
- struct RAID_CONTEXT RaidContext; /* 0x60 */
+ RAID_CONTEXT_UNION RaidContext; /* 0x60 */
union MPI2_SGE_IO_UNION SGL; /* 0x80 */
};

@@ -656,11 +744,13 @@ struct MR_LD_RAID {
u32 encryptionType:8;
u32 pdPiMode:4;
u32 ldPiMode:4;
- u32 reserved5:3;
+ u32 reserved5:2;
+ u32 raCapable:1;
u32 fpCapable:1;
#else
u32 fpCapable:1;
- u32 reserved5:3;
+ u32 raCapable:1;
+ u32 reserved5:2;
u32 ldPiMode:4;
u32 pdPiMode:4;
u32 encryptionType:8;
@@ -745,6 +835,7 @@ struct IO_REQUEST_INFO {
u64 start_row;
u8 span_arm; /* span[7:5], arm[4:0] */
u8 pd_after_lb;
+ bool raCapable;
};

struct MR_LD_TARGET_SYNC {
@@ -930,6 +1021,31 @@ struct MR_PD_CFG_SEQ_NUM_SYNC {
struct MR_PD_CFG_SEQ seq[1];
} __packed;

+/* stream detection */
+typedef struct _STREAM_DETECT {
+ u64 nextSeqLBA; /* next LBA to match sequential access */
+ struct megasas_cmd_fusion *first_cmd_fusion; /* first cmd in group */
+ struct megasas_cmd_fusion *last_cmd_fusion; /* last cmd in group */
+ u32 countCmdsInStream; /* count of host commands in this stream */
+ u16 numSGEsInGroup; /* total number of SGEs in grouped IOs */
+ u8 isRead; /* SCSI OpCode for this stream */
+ u8 groupDepth; /* total number of host commands in group */
+ bool groupFlush; /* TRUE if cannot add any more commands to this group */
+ u8 reserved[7]; /* pad to 64-bit alignment */
+} STREAM_DETECT, *PTR_STREAM_DETECT;
+
+typedef struct _LD_STREAM_DETECT {
+ bool writeBack; /* TRUE if WB, FALSE if WT */
+ bool FPWriteEnabled;
+ bool membersSSDs;
+ bool fpCacheBypassCapable;
+ u32 mruBitMap; /* bitmap used to track MRU and LRU stream indicies */
+ volatile long iosToFware; /* current count of RW IOs sent to Fware */
+ volatile long writeBytesOutstanding; /* not used in first implementation */
+ /* this is the array of stream detect structures (one per stream) */
+ STREAM_DETECT streamTrack[MAX_STREAMS_TRACKED];
+} LD_STREAM_DETECT, *PTR_LD_STREAM_DETECT;
+
struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY {
u64 RDPQBaseAddress;
u32 Reserved1;
@@ -983,6 +1099,7 @@ struct fusion_context {
struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES_EXT];
LD_SPAN_INFO log_to_span[MAX_LOGICAL_DRIVES_EXT];
u8 adapter_type;
+ PTR_LD_STREAM_DETECT *streamDetectByLD;
};

union desc_value {
--
1.8.3.1