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@@ -21,27 +21,23 @@
*
* **********************************************************************
*/
#include <sys/scsi/scsi.h>
-#include "ld_pd_map.h"
#include "mr_sas.h"
+#include "ld_pd_map.h"
/*
* This function will check if FAST IO is possible on this logical drive
- * by checking the EVENT information availabe in the driver
+ * by checking the EVENT information available in the driver
*/
#define MR_LD_STATE_OPTIMAL 3
-#define ABS_DIFF(a,b) ( ((a) > (b)) ? ((a) - (b)) : ((b) - (a)) )
+#define ABS_DIFF(a, b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a)))
-void
-mr_update_load_balance_params(MR_FW_RAID_MAP_ALL *map, PLD_LOAD_BALANCE_INFO lbInfo);
+static void mr_update_load_balance_params(MR_FW_RAID_MAP_ALL *,
+ PLD_LOAD_BALANCE_INFO);
-U8
-MR_BuildRaidContext(struct mrsas_instance *, struct IO_REQUEST_INFO *,
- MPI2_SCSI_IO_VENDOR_UNIQUE *, MR_FW_RAID_MAP_ALL *);
-
#define FALSE 0
#define TRUE 1
typedef U64 REGION_KEY;
typedef U32 REGION_LEN;
@@ -52,50 +48,56 @@
*MR_LdRaidGet(U32 ld, MR_FW_RAID_MAP_ALL *map)
{
return (&map->raidMap.ldSpanMap[ld].ldRaid);
}
-U16 MR_GetLDTgtId
-(U32 ld, MR_FW_RAID_MAP_ALL *map)
+U16
+MR_GetLDTgtId(U32 ld, MR_FW_RAID_MAP_ALL *map)
{
return (map->raidMap.ldSpanMap[ld].ldRaid.targetId);
}
-static MR_SPAN_BLOCK_INFO *MR_LdSpanInfoGet(U32 ld, MR_FW_RAID_MAP_ALL *map)
+static MR_SPAN_BLOCK_INFO *
+MR_LdSpanInfoGet(U32 ld, MR_FW_RAID_MAP_ALL *map)
{
return (&map->raidMap.ldSpanMap[ld].spanBlock[0]);
}
-static U8 MR_LdDataArmGet(U32 ld, U32 armIdx, MR_FW_RAID_MAP_ALL *map)
+static U8
+MR_LdDataArmGet(U32 ld, U32 armIdx, MR_FW_RAID_MAP_ALL *map)
{
return (map->raidMap.ldSpanMap[ld].dataArmMap[armIdx]);
}
-static U16 MR_ArPdGet(U32 ar, U32 arm, MR_FW_RAID_MAP_ALL *map)
+static U16
+MR_ArPdGet(U32 ar, U32 arm, MR_FW_RAID_MAP_ALL *map)
{
return (map->raidMap.arMapInfo[ar].pd[arm]);
}
-static U16 MR_LdSpanArrayGet(U32 ld, U32 span, MR_FW_RAID_MAP_ALL *map)
+static U16
+MR_LdSpanArrayGet(U32 ld, U32 span, MR_FW_RAID_MAP_ALL *map)
{
return (map->raidMap.ldSpanMap[ld].spanBlock[span].span.arrayRef);
}
-static U16 MR_PdDevHandleGet(U32 pd, MR_FW_RAID_MAP_ALL *map)
+static U16
+MR_PdDevHandleGet(U32 pd, MR_FW_RAID_MAP_ALL *map)
{
return (map->raidMap.devHndlInfo[pd].curDevHdl);
}
-U16 MR_TargetIdToLdGet(U32 ldTgtId, MR_FW_RAID_MAP_ALL *map)
+U16
+MR_TargetIdToLdGet(U32 ldTgtId, MR_FW_RAID_MAP_ALL *map)
{
return (map->raidMap.ldTgtIdToLd[ldTgtId]);
}
-U16 MR_CheckDIF(U32 ldTgtId, MR_FW_RAID_MAP_ALL *map)
+U16
+MR_CheckDIF(U32 ldTgtId, MR_FW_RAID_MAP_ALL *map)
{
- MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap;
MR_LD_RAID *raid;
U32 ld;
ld = MR_TargetIdToLdGet(ldTgtId, map);
@@ -106,35 +108,34 @@
raid = MR_LdRaidGet(ld, map);
return (raid->capability.ldPiMode == 0x8);
}
-static MR_LD_SPAN *MR_LdSpanPtrGet(U32 ld, U32 span, MR_FW_RAID_MAP_ALL *map)
+static MR_LD_SPAN *
+MR_LdSpanPtrGet(U32 ld, U32 span, MR_FW_RAID_MAP_ALL *map)
{
return (&map->raidMap.ldSpanMap[ld].spanBlock[span].span);
}
/*
* This function will validate Map info data provided by FW
*/
-U8 MR_ValidateMapInfo(MR_FW_RAID_MAP_ALL *map, PLD_LOAD_BALANCE_INFO lbInfo)
+U8
+MR_ValidateMapInfo(MR_FW_RAID_MAP_ALL *map, PLD_LOAD_BALANCE_INFO lbInfo)
{
MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap;
+ U32 fwsize = sizeof (MR_FW_RAID_MAP) - sizeof (MR_LD_SPAN_MAP) +
+ (sizeof (MR_LD_SPAN_MAP) * pFwRaidMap->ldCount);
+ if (pFwRaidMap->totalSize != fwsize) {
- if (pFwRaidMap->totalSize !=
- (sizeof (MR_FW_RAID_MAP) - sizeof (MR_LD_SPAN_MAP) +
- (sizeof (MR_LD_SPAN_MAP) * pFwRaidMap->ldCount))) {
-
- con_log(CL_ANN1, (CE_NOTE,\
- "map info structure size 0x%x\
- is not matching with ld count\n",\
- ((sizeof (MR_FW_RAID_MAP) - sizeof (MR_LD_SPAN_MAP)) +\
- (sizeof (MR_LD_SPAN_MAP) * pFwRaidMap->ldCount))));
-
+ con_log(CL_ANN1, (CE_NOTE,
+ "map info structure size 0x%x is "
+ "not matching with ld count\n", fwsize));
+ /* sizeof (foo) returns size_t, which is *LONG*. */
con_log(CL_ANN1, (CE_NOTE, "span map 0x%x total size 0x%x\n",\
- sizeof (MR_LD_SPAN_MAP), pFwRaidMap->totalSize));
+ (int)sizeof (MR_LD_SPAN_MAP), pFwRaidMap->totalSize));
return (0);
}
mr_update_load_balance_params(map, lbInfo);
@@ -141,33 +142,34 @@
return (1);
}
U32
-MR_GetSpanBlock(U32 ld, U64 row, U64 *span_blk, MR_FW_RAID_MAP_ALL *map, int *div_error)
+MR_GetSpanBlock(U32 ld, U64 row, U64 *span_blk, MR_FW_RAID_MAP_ALL *map,
+ int *div_error)
{
MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map);
- MR_QUAD_ELEMENT *quad;
+ MR_QUAD_ELEMENT *qe;
MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
U32 span, j;
for (span = 0; span < raid->spanDepth; span++, pSpanBlock++) {
for (j = 0; j < pSpanBlock->block_span_info.noElements; j++) {
- quad = &pSpanBlock->block_span_info.quad[j];
- if(quad->diff == 0) {
- *div_error=1;
+ qe = &pSpanBlock->block_span_info.quads[j];
+ if (qe->diff == 0) {
+ *div_error = 1;
return (span);
}
- if (quad->logStart <= row &&
- row <= quad->logEnd &&
- (((row-quad->logStart) % quad->diff)) == 0) {
+ if (qe->logStart <= row && row <= qe->logEnd &&
+ (((row - qe->logStart) % qe->diff)) == 0) {
if (span_blk != NULL) {
U64 blk;
- blk = ((row-quad->logStart) /
- (quad->diff));
+ blk = ((row - qe->logStart) /
+ (qe->diff));
- blk = (blk + quad->offsetInSpan) << raid->stripeShift;
+ blk = (blk + qe->offsetInSpan) <<
+ raid->stripeShift;
*span_blk = blk;
}
return (span);
}
}
@@ -192,24 +194,26 @@
*
* span - Span number
* block - Absolute Block number in the physical disk
*/
U8
-MR_GetPhyParams(struct mrsas_instance *instance, U32 ld, U64 stripRow, U16 stripRef,
-U64 *pdBlock, U16 *pDevHandle, MPI2_SCSI_IO_VENDOR_UNIQUE *pRAID_Context,
-MR_FW_RAID_MAP_ALL *map)
+MR_GetPhyParams(struct mrsas_instance *instance, U32 ld, U64 stripRow,
+ U16 stripRef, U64 *pdBlock, U16 *pDevHandle,
+ MPI2_SCSI_IO_VENDOR_UNIQUE *pRAID_Context, MR_FW_RAID_MAP_ALL *map)
{
MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
U32 pd, arRef;
U8 physArm, span;
U64 row;
- int error_code=0;
+ int error_code = 0;
U8 retval = TRUE;
U32 rowMod;
U32 armQ;
U32 arm;
+ ASSERT(raid->rowDataSize != 0);
+
row = (stripRow / raid->rowDataSize);
if (raid->level == 6) {
U32 logArm = (stripRow % (raid->rowDataSize));
@@ -216,17 +220,17 @@
if (raid->rowSize == 0) {
return (FALSE);
}
rowMod = (row % (raid->rowSize));
armQ = raid->rowSize-1-rowMod;
- arm = armQ+1+logArm;
+ arm = armQ + 1 + logArm;
if (arm >= raid->rowSize)
arm -= raid->rowSize;
physArm = (U8)arm;
} else {
if (raid->modFactor == 0)
- return FALSE;
+ return (FALSE);
physArm = MR_LdDataArmGet(ld,
(stripRow % (raid->modFactor)), map);
}
if (raid->spanDepth == 1) {
span = 0;
@@ -233,39 +237,41 @@
*pdBlock = row << raid->stripeShift;
} else
span = (U8)MR_GetSpanBlock(ld, row, pdBlock, map, &error_code);
if (error_code == 1)
- return FALSE;
+ return (FALSE);
- // Get the array on which this span is present.
+ /* Get the array on which this span is present. */
arRef = MR_LdSpanArrayGet(ld, span, map);
- // Get the Pd.
+ /* Get the Pd. */
pd = MR_ArPdGet(arRef, physArm, map);
- // Get dev handle from Pd.
+ /* Get dev handle from Pd. */
if (pd != MR_PD_INVALID) {
*pDevHandle = MR_PdDevHandleGet(pd, map);
- }
- else {
- *pDevHandle = MR_PD_INVALID; // set dev handle as invalid.
- if ( (raid->level >= 5) &&
+ } else {
+ *pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */
+ if ((raid->level >= 5) &&
((instance->device_id != PCI_DEVICE_ID_LSI_INVADER) ||
(instance->device_id == PCI_DEVICE_ID_LSI_INVADER &&
- raid->regTypeReqOnRead != REGION_TYPE_UNUSED)) )
+ raid->regTypeReqOnRead != REGION_TYPE_UNUSED))) {
pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
- else if (raid->level == 1) {
- pd = MR_ArPdGet(arRef, physArm + 1, map); // Get Alternate Pd.
+ } else if (raid->level == 1) {
+ /* Get Alternate Pd. */
+ pd = MR_ArPdGet(arRef, physArm + 1, map);
+ /* Get dev handle from Pd. */
if (pd != MR_PD_INVALID)
- *pDevHandle = MR_PdDevHandleGet(pd, map); // Get dev handle from Pd.
+ *pDevHandle = MR_PdDevHandleGet(pd, map);
}
}
*pdBlock += stripRef + MR_LdSpanPtrGet(ld, span, map)->startBlk;
- pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm;
+ pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) |
+ physArm;
- return retval;
+ return (retval);
}
/*
@@ -278,12 +284,13 @@
* This function will return 0 if region lock
* was acquired OR return num strips ???
*/
U8
-MR_BuildRaidContext(struct mrsas_instance *instance, struct IO_REQUEST_INFO *io_info,
-MPI2_SCSI_IO_VENDOR_UNIQUE *pRAID_Context, MR_FW_RAID_MAP_ALL *map)
+MR_BuildRaidContext(struct mrsas_instance *instance,
+ struct IO_REQUEST_INFO *io_info, MPI2_SCSI_IO_VENDOR_UNIQUE *pRAID_Context,
+ MR_FW_RAID_MAP_ALL *map)
{
MR_LD_RAID *raid;
U32 ld, stripSize, stripe_mask;
U64 endLba, endStrip, endRow;
U64 start_row, start_strip;
@@ -301,11 +308,11 @@
ldStartBlock = io_info->ldStartBlock;
numBlocks = io_info->numBlocks;
ldTgtId = io_info->ldTgtId;
isRead = io_info->isRead;
- if ( map == NULL ) {
+ if (map == NULL) {
io_info->fpOkForIo = FALSE;
return (FALSE);
}
ld = MR_TargetIdToLdGet(ldTgtId, map);
@@ -326,16 +333,16 @@
ref_in_start_stripe = (U16)(ldStartBlock & stripe_mask);
endLba = ldStartBlock + numBlocks - 1;
ref_in_end_stripe = (U16)(endLba & stripe_mask);
endStrip = endLba >> raid->stripeShift;
num_strips = (U8)(endStrip - start_strip + 1);
- /* Check to make sure is not deviding by zero */
+ /* Check to make sure is not dividing by zero */
if (raid->rowDataSize == 0)
- return FALSE;
+ return (FALSE);
start_row = (start_strip / raid->rowDataSize);
endRow = (endStrip / raid->rowDataSize);
- // get the row count
+ /* get the row count */
numRows = (U8)(endRow - start_row + 1);
/*
* calculate region info.
*/
@@ -342,26 +349,28 @@
regStart = start_row << raid->stripeShift;
regSize = stripSize;
/* Check if we can send this I/O via FastPath */
if (raid->capability.fpCapable) {
- if (isRead)
+ if (isRead) {
io_info->fpOkForIo = (raid->capability.fpReadCapable &&
((num_strips == 1) ||
raid->capability.fpReadAcrossStripe));
- else
- io_info->fpOkForIo = (raid->capability.fpWriteCapable &&
+ } else {
+ io_info->fpOkForIo =
+ (raid->capability.fpWriteCapable &&
((num_strips == 1) ||
raid->capability.fpWriteAcrossStripe));
+ }
} else
io_info->fpOkForIo = FALSE;
/*
* Check for DIF support
*/
- if ( !raid->capability.ldPiMode ) {
+ if (!raid->capability.ldPiMode) {
io_info->ldPI = FALSE;
} else {
io_info->ldPI = TRUE;
}
@@ -375,28 +384,29 @@
regStart += ref_in_start_stripe;
regSize = stripSize - ref_in_start_stripe;
}
if (numRows > 2) {
- regSize += (numRows-2) << raid->stripeShift;
+ regSize += (numRows - 2) << raid->stripeShift;
}
- if (endStrip == endRow*raid->rowDataSize) {
- regSize += ref_in_end_stripe+1;
+ if (endStrip == endRow * raid->rowDataSize) {
+ regSize += ref_in_end_stripe + 1;
} else {
regSize += stripSize;
}
}
pRAID_Context->timeoutValue = map->raidMap.fpPdIoTimeoutSec;
- if (instance->device_id == PCI_DEVICE_ID_LSI_INVADER)
- pRAID_Context->regLockFlags =
- (isRead)? raid->regTypeReqOnRead : raid->regTypeReqOnWrite;
- else
- pRAID_Context->regLockFlags =
- (isRead) ? REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite;
+ if (instance->device_id == PCI_DEVICE_ID_LSI_INVADER) {
+ pRAID_Context->regLockFlags = (isRead) ?
+ raid->regTypeReqOnRead : raid->regTypeReqOnWrite;
+ } else {
+ pRAID_Context->regLockFlags = (isRead) ?
+ REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite;
+ }
pRAID_Context->ldTargetId = raid->targetId;
pRAID_Context->regLockRowLBA = regStart;
pRAID_Context->regLockLength = regSize;
pRAID_Context->configSeqNum = raid->seqNum;
@@ -405,75 +415,87 @@
* Get Phy Params only if FP capable,
* or else leave it to MR firmware to do the calculation.
*/
if (io_info->fpOkForIo) {
/* if fast path possible then get the physical parameters */
- retval = MR_GetPhyParams(instance, ld, start_strip, ref_in_start_stripe,
- &io_info->pdBlock, &io_info->devHandle,
- pRAID_Context, map);
+ retval = MR_GetPhyParams(instance, ld, start_strip,
+ ref_in_start_stripe, &io_info->pdBlock,
+ &io_info->devHandle, pRAID_Context, map);
- if (io_info->devHandle == MR_PD_INVALID) // If IO on an invalid Pd, then FP is not possible.
+ /* If IO on an invalid Pd, then FP is not possible. */
+ if (io_info->devHandle == MR_PD_INVALID)
io_info->fpOkForIo = FALSE;
- return retval;
+ return (retval);
} else if (isRead) {
- uint stripIdx;
- for (stripIdx=0; stripIdx<num_strips; stripIdx++) {
- if (!MR_GetPhyParams(instance, ld, start_strip + stripIdx, ref_in_start_stripe,
- &io_info->pdBlock, &io_info->devHandle, pRAID_Context, map))
- return TRUE;
+ uint_t stripIdx;
+
+ for (stripIdx = 0; stripIdx < num_strips; stripIdx++) {
+ if (!MR_GetPhyParams(instance, ld,
+ start_strip + stripIdx, ref_in_start_stripe,
+ &io_info->pdBlock, &io_info->devHandle,
+ pRAID_Context, map)) {
+ return (TRUE);
}
}
+ }
return (TRUE);
}
void
-mr_update_load_balance_params(MR_FW_RAID_MAP_ALL *map, PLD_LOAD_BALANCE_INFO lbInfo)
+mr_update_load_balance_params(MR_FW_RAID_MAP_ALL *map,
+ PLD_LOAD_BALANCE_INFO lbInfo)
{
int ldCount;
U16 ld;
MR_LD_RAID *raid;
- for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++)
- {
+ for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) {
ld = MR_TargetIdToLdGet(ldCount, map);
if (ld >= MAX_LOGICAL_DRIVES) {
- con_log(CL_ANN1, (CE_NOTE,
- "mrsas: ld=%d Invalid ld \n", ld));
+ con_log(CL_ANN1,
+ (CE_NOTE, "mrsas: ld=%d Invalid ld \n", ld));
continue;
}
raid = MR_LdRaidGet(ld, map);
/* Two drive Optimal RAID 1 */
- if ((raid->level == 1) && (raid->rowSize == 2) && (raid->spanDepth == 1)
- && raid->ldState == MR_LD_STATE_OPTIMAL) {
+ if ((raid->level == 1) && (raid->rowSize == 2) &&
+ (raid->spanDepth == 1) &&
+ raid->ldState == MR_LD_STATE_OPTIMAL) {
U32 pd, arRef;
lbInfo[ldCount].loadBalanceFlag = 1;
- //U8 physArm = 0;
- arRef = MR_LdSpanArrayGet(ld, 0, map); // Get the array on which this span is present.
+ /* Get the array on which this span is present. */
+ arRef = MR_LdSpanArrayGet(ld, 0, map);
- pd = MR_ArPdGet(arRef, 0, map); // Get the Pd.
- lbInfo[ldCount].raid1DevHandle[0] = MR_PdDevHandleGet(pd, map); // Get dev handle from Pd.
+ pd = MR_ArPdGet(arRef, 0, map); /* Get the Pd. */
+ /* Get dev handle from Pd. */
+ lbInfo[ldCount].raid1DevHandle[0] =
+ MR_PdDevHandleGet(pd, map);
- pd = MR_ArPdGet(arRef, 1, map); // Get the Pd.
- lbInfo[ldCount].raid1DevHandle[1] = MR_PdDevHandleGet(pd, map); // Get dev handle from Pd.
- con_log(CL_ANN1, (CE_NOTE,\
+ pd = MR_ArPdGet(arRef, 1, map); /* Get the Pd. */
+ /* Get dev handle from Pd. */
+ lbInfo[ldCount].raid1DevHandle[1] =
+ MR_PdDevHandleGet(pd, map);
+ con_log(CL_ANN1, (CE_NOTE,
"mrsas: ld=%d load balancing enabled \n", ldCount));
} else {
lbInfo[ldCount].loadBalanceFlag = 0;
}
}
}
-U8 megasas_get_best_arm(PLD_LOAD_BALANCE_INFO lbInfo, U8 arm, U64 block, U32 count)
+U8
+megasas_get_best_arm(PLD_LOAD_BALANCE_INFO lbInfo, U8 arm, U64 block,
+ U32 count)
{
U16 pend0, pend1;
U64 diff0, diff1;
U8 bestArm;
@@ -484,29 +506,34 @@
/* Determine the disk whose head is nearer to the req. block */
diff0 = ABS_DIFF(block, lbInfo->last_accessed_block[0]);
diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[1]);
bestArm = (diff0 <= diff1 ? 0 : 1);
- if ((bestArm == arm && pend0 > pend1 + 16) || (bestArm != arm && pend1 > pend0 + 16))
+ if ((bestArm == arm && pend0 > pend1 + 16) ||
+ (bestArm != arm && pend1 > pend0 + 16)) {
bestArm ^= 1;
+ }
/* Update the last accessed block on the correct pd */
lbInfo->last_accessed_block[bestArm] = block + count - 1;
- return bestArm;
+ return (bestArm);
}
-U16 get_updated_dev_handle(PLD_LOAD_BALANCE_INFO lbInfo, struct IO_REQUEST_INFO *io_info)
+U16
+get_updated_dev_handle(PLD_LOAD_BALANCE_INFO lbInfo,
+ struct IO_REQUEST_INFO *io_info)
{
U8 arm, old_arm;
U16 devHandle;
old_arm = lbInfo->raid1DevHandle[0] == io_info->devHandle ? 0 : 1;
/* get best new arm */
- arm = megasas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock, io_info->numBlocks);
+ arm = megasas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock,
+ io_info->numBlocks);
devHandle = lbInfo->raid1DevHandle[arm];
lbInfo->scsi_pending_cmds[arm]++;
- return devHandle;
+ return (devHandle);
}