#define FALSE 0
#define TRUE 1
+#define SPAN_DEBUG 0
+#define SPAN_ROW_SIZE(map, ld, index_) (MR_LdSpanPtrGet(ld, index_, map)->spanRowSize)
+#define SPAN_ROW_DATA_SIZE(map_, ld, index_) (MR_LdSpanPtrGet(ld, index_, map)->spanRowDataSize)
+#define SPAN_INVALID 0xff
+
/* Prototypes */
-void
-mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
- struct LD_LOAD_BALANCE_INFO *lbInfo);
+void mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
+ struct LD_LOAD_BALANCE_INFO *lbInfo);
+
+static void mr_update_span_set(struct MR_FW_RAID_MAP_ALL *map,
+ PLD_SPAN_INFO ldSpanInfo);
+static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
+ u64 stripRow, u16 stripRef, struct IO_REQUEST_INFO *io_info,
+ struct RAID_CONTEXT *pRAID_Context, struct MR_FW_RAID_MAP_ALL *map);
+static u64 get_row_from_strip(struct megasas_instance *instance, u32 ld,
+ u64 strip, struct MR_FW_RAID_MAP_ALL *map);
u32 mega_mod64(u64 dividend, u32 divisor)
{
/*
* This function will validate Map info data provided by FW
*/
-u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
- struct LD_LOAD_BALANCE_INFO *lbInfo)
+u8 MR_ValidateMapInfo(struct megasas_instance *instance)
{
+ struct fusion_context *fusion = instance->ctrl_context;
+ struct MR_FW_RAID_MAP_ALL *map = fusion->ld_map[(instance->map_id & 1)];
+ struct LD_LOAD_BALANCE_INFO *lbInfo = fusion->load_balance_info;
+ PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
struct MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap;
if (pFwRaidMap->totalSize !=
return 0;
}
+ if (instance->UnevenSpanSupport)
+ mr_update_span_set(map, ldSpanInfo);
+
mr_update_load_balance_params(map, lbInfo);
return 1;
}
u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk,
- struct MR_FW_RAID_MAP_ALL *map, int *div_error)
+ struct MR_FW_RAID_MAP_ALL *map)
{
struct MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map);
struct MR_QUAD_ELEMENT *quad;
for (j = 0; j < pSpanBlock->block_span_info.noElements; j++) {
quad = &pSpanBlock->block_span_info.quad[j];
- if (quad->diff == 0) {
- *div_error = 1;
- return span;
- }
+ if (quad->diff == 0)
+ return SPAN_INVALID;
if (quad->logStart <= row && row <= quad->logEnd &&
(mega_mod64(row-quad->logStart, quad->diff)) == 0) {
if (span_blk != NULL) {
}
}
}
- return span;
+ return SPAN_INVALID;
+}
+
+/*
+******************************************************************************
+*
+* Function to print info about span set created in driver from FW raid map
+*
+* Inputs :
+* map - LD map
+* ldSpanInfo - ldSpanInfo per HBA instance
+*/
+#if SPAN_DEBUG
+static int getSpanInfo(struct MR_FW_RAID_MAP_ALL *map, PLD_SPAN_INFO ldSpanInfo)
+{
+
+ u8 span;
+ u32 element;
+ struct MR_LD_RAID *raid;
+ LD_SPAN_SET *span_set;
+ struct MR_QUAD_ELEMENT *quad;
+ int ldCount;
+ u16 ld;
+
+ for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) {
+ ld = MR_TargetIdToLdGet(ldCount, map);
+ if (ld >= MAX_LOGICAL_DRIVES)
+ continue;
+ raid = MR_LdRaidGet(ld, map);
+ dev_dbg(&instance->pdev->dev, "LD %x: span_depth=%x\n",
+ ld, raid->spanDepth);
+ for (span = 0; span < raid->spanDepth; span++)
+ dev_dbg(&instance->pdev->dev, "Span=%x,"
+ " number of quads=%x\n", span,
+ map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements);
+ for (element = 0; element < MAX_QUAD_DEPTH; element++) {
+ span_set = &(ldSpanInfo[ld].span_set[element]);
+ if (span_set->span_row_data_width == 0)
+ break;
+
+ dev_dbg(&instance->pdev->dev, "Span Set %x:"
+ "width=%x, diff=%x\n", element,
+ (unsigned int)span_set->span_row_data_width,
+ (unsigned int)span_set->diff);
+ dev_dbg(&instance->pdev->dev, "logical LBA"
+ "start=0x%08lx, end=0x%08lx\n",
+ (long unsigned int)span_set->log_start_lba,
+ (long unsigned int)span_set->log_end_lba);
+ dev_dbg(&instance->pdev->dev, "span row start=0x%08lx,"
+ " end=0x%08lx\n",
+ (long unsigned int)span_set->span_row_start,
+ (long unsigned int)span_set->span_row_end);
+ dev_dbg(&instance->pdev->dev, "data row start=0x%08lx,"
+ " end=0x%08lx\n",
+ (long unsigned int)span_set->data_row_start,
+ (long unsigned int)span_set->data_row_end);
+ dev_dbg(&instance->pdev->dev, "data strip start=0x%08lx,"
+ " end=0x%08lx\n",
+ (long unsigned int)span_set->data_strip_start,
+ (long unsigned int)span_set->data_strip_end);
+
+ for (span = 0; span < raid->spanDepth; span++) {
+ if (map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements >=
+ element + 1) {
+ quad = &map->raidMap.ldSpanMap[ld].
+ spanBlock[span].block_span_info.
+ quad[element];
+ dev_dbg(&instance->pdev->dev, "Span=%x,"
+ "Quad=%x, diff=%x\n", span,
+ element, quad->diff);
+ dev_dbg(&instance->pdev->dev,
+ "offset_in_span=0x%08lx\n",
+ (long unsigned int)quad->offsetInSpan);
+ dev_dbg(&instance->pdev->dev,
+ "logical start=0x%08lx, end=0x%08lx\n",
+ (long unsigned int)quad->logStart,
+ (long unsigned int)quad->logEnd);
+ }
+ }
+ }
+ }
+ return 0;
+}
+#endif
+
+/*
+******************************************************************************
+*
+* This routine calculates the Span block for given row using spanset.
+*
+* Inputs :
+* instance - HBA instance
+* ld - Logical drive number
+* row - Row number
+* map - LD map
+*
+* Outputs :
+*
+* span - Span number
+* block - Absolute Block number in the physical disk
+* div_error - Devide error code.
+*/
+
+u32 mr_spanset_get_span_block(struct megasas_instance *instance,
+ u32 ld, u64 row, u64 *span_blk, struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct fusion_context *fusion = instance->ctrl_context;
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ LD_SPAN_SET *span_set;
+ struct MR_QUAD_ELEMENT *quad;
+ u32 span, info;
+ PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
+
+ for (info = 0; info < MAX_QUAD_DEPTH; info++) {
+ span_set = &(ldSpanInfo[ld].span_set[info]);
+
+ if (span_set->span_row_data_width == 0)
+ break;
+
+ if (row > span_set->data_row_end)
+ continue;
+
+ for (span = 0; span < raid->spanDepth; span++)
+ if (map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements >= info+1) {
+ quad = &map->raidMap.ldSpanMap[ld].
+ spanBlock[span].
+ block_span_info.quad[info];
+ if (quad->diff == 0)
+ return SPAN_INVALID;
+ if (quad->logStart <= row &&
+ row <= quad->logEnd &&
+ (mega_mod64(row - quad->logStart,
+ quad->diff)) == 0) {
+ if (span_blk != NULL) {
+ u64 blk;
+ blk = mega_div64_32
+ ((row - quad->logStart),
+ quad->diff);
+ blk = (blk + quad->offsetInSpan)
+ << raid->stripeShift;
+ *span_blk = blk;
+ }
+ return span;
+ }
+ }
+ }
+ return SPAN_INVALID;
+}
+
+/*
+******************************************************************************
+*
+* This routine calculates the row for given strip using spanset.
+*
+* Inputs :
+* instance - HBA instance
+* ld - Logical drive number
+* Strip - Strip
+* map - LD map
+*
+* Outputs :
+*
+* row - row associated with strip
+*/
+
+static u64 get_row_from_strip(struct megasas_instance *instance,
+ u32 ld, u64 strip, struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct fusion_context *fusion = instance->ctrl_context;
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ LD_SPAN_SET *span_set;
+ PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
+ u32 info, strip_offset, span, span_offset;
+ u64 span_set_Strip, span_set_Row, retval;
+
+ for (info = 0; info < MAX_QUAD_DEPTH; info++) {
+ span_set = &(ldSpanInfo[ld].span_set[info]);
+
+ if (span_set->span_row_data_width == 0)
+ break;
+ if (strip > span_set->data_strip_end)
+ continue;
+
+ span_set_Strip = strip - span_set->data_strip_start;
+ strip_offset = mega_mod64(span_set_Strip,
+ span_set->span_row_data_width);
+ span_set_Row = mega_div64_32(span_set_Strip,
+ span_set->span_row_data_width) * span_set->diff;
+ for (span = 0, span_offset = 0; span < raid->spanDepth; span++)
+ if (map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements >= info+1) {
+ if (strip_offset >=
+ span_set->strip_offset[span])
+ span_offset++;
+ else
+ break;
+ }
+#if SPAN_DEBUG
+ dev_info(&instance->pdev->dev, "Strip 0x%llx,"
+ "span_set_Strip 0x%llx, span_set_Row 0x%llx"
+ "data width 0x%llx span offset 0x%x\n", strip,
+ (unsigned long long)span_set_Strip,
+ (unsigned long long)span_set_Row,
+ (unsigned long long)span_set->span_row_data_width,
+ span_offset);
+ dev_info(&instance->pdev->dev, "For strip 0x%llx"
+ "row is 0x%llx\n", strip,
+ (unsigned long long) span_set->data_row_start +
+ (unsigned long long) span_set_Row + (span_offset - 1));
+#endif
+ retval = (span_set->data_row_start + span_set_Row +
+ (span_offset - 1));
+ return retval;
+ }
+ return -1LLU;
+}
+
+
+/*
+******************************************************************************
+*
+* This routine calculates the Start Strip for given row using spanset.
+*
+* Inputs :
+* instance - HBA instance
+* ld - Logical drive number
+* row - Row number
+* map - LD map
+*
+* Outputs :
+*
+* Strip - Start strip associated with row
+*/
+
+static u64 get_strip_from_row(struct megasas_instance *instance,
+ u32 ld, u64 row, struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct fusion_context *fusion = instance->ctrl_context;
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ LD_SPAN_SET *span_set;
+ struct MR_QUAD_ELEMENT *quad;
+ PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
+ u32 span, info;
+ u64 strip;
+
+ for (info = 0; info < MAX_QUAD_DEPTH; info++) {
+ span_set = &(ldSpanInfo[ld].span_set[info]);
+
+ if (span_set->span_row_data_width == 0)
+ break;
+ if (row > span_set->data_row_end)
+ continue;
+
+ for (span = 0; span < raid->spanDepth; span++)
+ if (map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements >= info+1) {
+ quad = &map->raidMap.ldSpanMap[ld].
+ spanBlock[span].block_span_info.quad[info];
+ if (quad->logStart <= row &&
+ row <= quad->logEnd &&
+ mega_mod64((row - quad->logStart),
+ quad->diff) == 0) {
+ strip = mega_div64_32
+ (((row - span_set->data_row_start)
+ - quad->logStart),
+ quad->diff);
+ strip *= span_set->span_row_data_width;
+ strip += span_set->data_strip_start;
+ strip += span_set->strip_offset[span];
+ return strip;
+ }
+ }
+ }
+ dev_err(&instance->pdev->dev, "get_strip_from_row"
+ "returns invalid strip for ld=%x, row=%lx\n",
+ ld, (long unsigned int)row);
+ return -1;
+}
+
+/*
+******************************************************************************
+*
+* This routine calculates the Physical Arm for given strip using spanset.
+*
+* Inputs :
+* instance - HBA instance
+* ld - Logical drive number
+* strip - Strip
+* map - LD map
+*
+* Outputs :
+*
+* Phys Arm - Phys Arm associated with strip
+*/
+
+static u32 get_arm_from_strip(struct megasas_instance *instance,
+ u32 ld, u64 strip, struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct fusion_context *fusion = instance->ctrl_context;
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ LD_SPAN_SET *span_set;
+ PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
+ u32 info, strip_offset, span, span_offset, retval;
+
+ for (info = 0 ; info < MAX_QUAD_DEPTH; info++) {
+ span_set = &(ldSpanInfo[ld].span_set[info]);
+
+ if (span_set->span_row_data_width == 0)
+ break;
+ if (strip > span_set->data_strip_end)
+ continue;
+
+ strip_offset = (uint)mega_mod64
+ ((strip - span_set->data_strip_start),
+ span_set->span_row_data_width);
+
+ for (span = 0, span_offset = 0; span < raid->spanDepth; span++)
+ if (map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements >= info+1) {
+ if (strip_offset >=
+ span_set->strip_offset[span])
+ span_offset =
+ span_set->strip_offset[span];
+ else
+ break;
+ }
+#if SPAN_DEBUG
+ dev_info(&instance->pdev->dev, "get_arm_from_strip:"
+ "for ld=0x%x strip=0x%lx arm is 0x%x\n", ld,
+ (long unsigned int)strip, (strip_offset - span_offset));
+#endif
+ retval = (strip_offset - span_offset);
+ return retval;
+ }
+
+ dev_err(&instance->pdev->dev, "get_arm_from_strip"
+ "returns invalid arm for ld=%x strip=%lx\n",
+ ld, (long unsigned int)strip);
+
+ return -1;
+}
+
+/* This Function will return Phys arm */
+u8 get_arm(struct megasas_instance *instance, u32 ld, u8 span, u64 stripe,
+ struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ /* Need to check correct default value */
+ u32 arm = 0;
+
+ switch (raid->level) {
+ case 0:
+ case 5:
+ case 6:
+ arm = mega_mod64(stripe, SPAN_ROW_SIZE(map, ld, span));
+ break;
+ case 1:
+ /* start with logical arm */
+ arm = get_arm_from_strip(instance, ld, stripe, map);
+ if (arm != -1UL)
+ arm *= 2;
+ break;
+ }
+
+ return arm;
+}
+
+
+/*
+******************************************************************************
+*
+* This routine calculates the arm, span and block for the specified stripe and
+* reference in stripe using spanset
+*
+* Inputs :
+*
+* ld - Logical drive number
+* stripRow - Stripe number
+* stripRef - Reference in stripe
+*
+* Outputs :
+*
+* span - Span number
+* block - Absolute Block number in the physical disk
+*/
+static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
+ u64 stripRow, u16 stripRef, struct IO_REQUEST_INFO *io_info,
+ struct RAID_CONTEXT *pRAID_Context,
+ struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ u32 pd, arRef;
+ u8 physArm, span;
+ u64 row;
+ u8 retval = TRUE;
+ u8 do_invader = 0;
+ u64 *pdBlock = &io_info->pdBlock;
+ u16 *pDevHandle = &io_info->devHandle;
+ u32 logArm, rowMod, armQ, arm;
+
+ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER ||
+ instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
+ do_invader = 1;
+
+ /*Get row and span from io_info for Uneven Span IO.*/
+ row = io_info->start_row;
+ span = io_info->start_span;
+
+
+ if (raid->level == 6) {
+ logArm = get_arm_from_strip(instance, ld, stripRow, map);
+ if (logArm == -1UL)
+ return FALSE;
+ rowMod = mega_mod64(row, SPAN_ROW_SIZE(map, ld, span));
+ armQ = SPAN_ROW_SIZE(map, ld, span) - 1 - rowMod;
+ arm = armQ + 1 + logArm;
+ if (arm >= SPAN_ROW_SIZE(map, ld, span))
+ arm -= SPAN_ROW_SIZE(map, ld, span);
+ physArm = (u8)arm;
+ } else
+ /* Calculate the arm */
+ physArm = get_arm(instance, ld, span, stripRow, map);
+ if (physArm == 0xFF)
+ return FALSE;
+
+ arRef = MR_LdSpanArrayGet(ld, span, map);
+ pd = MR_ArPdGet(arRef, physArm, map);
+
+ if (pd != MR_PD_INVALID)
+ *pDevHandle = MR_PdDevHandleGet(pd, map);
+ else {
+ *pDevHandle = MR_PD_INVALID;
+ if ((raid->level >= 5) &&
+ (!do_invader || (do_invader &&
+ (raid->regTypeReqOnRead != REGION_TYPE_UNUSED))))
+ pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
+ else if (raid->level == 1) {
+ pd = MR_ArPdGet(arRef, physArm + 1, map);
+ if (pd != MR_PD_INVALID)
+ *pDevHandle = MR_PdDevHandleGet(pd, map);
+ }
+ }
+
+ *pdBlock += stripRef + MR_LdSpanPtrGet(ld, span, map)->startBlk;
+ pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) |
+ physArm;
+ return retval;
}
/*
* block - Absolute Block number in the physical disk
*/
u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
- u16 stripRef, u64 *pdBlock, u16 *pDevHandle,
- struct RAID_CONTEXT *pRAID_Context,
- struct MR_FW_RAID_MAP_ALL *map)
+ u16 stripRef, struct IO_REQUEST_INFO *io_info,
+ struct RAID_CONTEXT *pRAID_Context,
+ struct MR_FW_RAID_MAP_ALL *map)
{
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
u32 pd, arRef;
u8 physArm, span;
u64 row;
u8 retval = TRUE;
- int error_code = 0;
u8 do_invader = 0;
+ u64 *pdBlock = &io_info->pdBlock;
+ u16 *pDevHandle = &io_info->devHandle;
if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER ||
instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
span = 0;
*pdBlock = row << raid->stripeShift;
} else {
- span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map, &error_code);
- if (error_code == 1)
+ span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map);
+ if (span == SPAN_INVALID)
return FALSE;
}
u32 numBlocks, ldTgtId;
u8 isRead;
u8 retval = 0;
+ u8 startlba_span = SPAN_INVALID;
+ u64 *pdBlock = &io_info->pdBlock;
ldStartBlock = io_info->ldStartBlock;
numBlocks = io_info->numBlocks;
ldTgtId = io_info->ldTgtId;
isRead = io_info->isRead;
+ io_info->IoforUnevenSpan = 0;
+ io_info->start_span = SPAN_INVALID;
ld = MR_TargetIdToLdGet(ldTgtId, map);
raid = MR_LdRaidGet(ld, map);
+ /*
+ * if rowDataSize @RAID map and spanRowDataSize @SPAN INFO are zero
+ * return FALSE
+ */
+ if (raid->rowDataSize == 0) {
+ if (MR_LdSpanPtrGet(ld, 0, map)->spanRowDataSize == 0)
+ return FALSE;
+ else if (instance->UnevenSpanSupport) {
+ io_info->IoforUnevenSpan = 1;
+ } else {
+ dev_info(&instance->pdev->dev,
+ "raid->rowDataSize is 0, but has SPAN[0]"
+ "rowDataSize = 0x%0x,"
+ "but there is _NO_ UnevenSpanSupport\n",
+ MR_LdSpanPtrGet(ld, 0, map)->spanRowDataSize);
+ return FALSE;
+ }
+ }
+
stripSize = 1 << raid->stripeShift;
stripe_mask = stripSize-1;
+
+
/*
* calculate starting row and stripe, and number of strips and rows
*/
ref_in_end_stripe = (u16)(endLba & stripe_mask);
endStrip = endLba >> raid->stripeShift;
num_strips = (u8)(endStrip - start_strip + 1); /* End strip */
- if (raid->rowDataSize == 0)
- return FALSE;
- start_row = mega_div64_32(start_strip, raid->rowDataSize);
- endRow = mega_div64_32(endStrip, raid->rowDataSize);
- numRows = (u8)(endRow - start_row + 1);
+
+ if (io_info->IoforUnevenSpan) {
+ start_row = get_row_from_strip(instance, ld, start_strip, map);
+ endRow = get_row_from_strip(instance, ld, endStrip, map);
+ if (start_row == -1ULL || endRow == -1ULL) {
+ dev_info(&instance->pdev->dev, "return from %s %d."
+ "Send IO w/o region lock.\n",
+ __func__, __LINE__);
+ return FALSE;
+ }
+
+ if (raid->spanDepth == 1) {
+ startlba_span = 0;
+ *pdBlock = start_row << raid->stripeShift;
+ } else
+ startlba_span = (u8)mr_spanset_get_span_block(instance,
+ ld, start_row, pdBlock, map);
+ if (startlba_span == SPAN_INVALID) {
+ dev_info(&instance->pdev->dev, "return from %s %d"
+ "for row 0x%llx,start strip %llx"
+ "endSrip %llx\n", __func__, __LINE__,
+ (unsigned long long)start_row,
+ (unsigned long long)start_strip,
+ (unsigned long long)endStrip);
+ return FALSE;
+ }
+ io_info->start_span = startlba_span;
+ io_info->start_row = start_row;
+#if SPAN_DEBUG
+ dev_dbg(&instance->pdev->dev, "Check Span number from %s %d"
+ "for row 0x%llx, start strip 0x%llx end strip 0x%llx"
+ " span 0x%x\n", __func__, __LINE__,
+ (unsigned long long)start_row,
+ (unsigned long long)start_strip,
+ (unsigned long long)endStrip, startlba_span);
+ dev_dbg(&instance->pdev->dev, "start_row 0x%llx endRow 0x%llx"
+ "Start span 0x%x\n", (unsigned long long)start_row,
+ (unsigned long long)endRow, startlba_span);
+#endif
+ } else {
+ start_row = mega_div64_32(start_strip, raid->rowDataSize);
+ endRow = mega_div64_32(endStrip, raid->rowDataSize);
+ }
+ numRows = (u8)(endRow - start_row + 1);
/*
* calculate region info.
regSize = numBlocks;
}
/* multi-strip IOs always need to full stripe locked */
- } else {
+ } else if (io_info->IoforUnevenSpan == 0) {
+ /*
+ * For Even span region lock optimization.
+ * If the start strip is the last in the start row
+ */
if (start_strip == (start_row + 1) * raid->rowDataSize - 1) {
- /* If the start strip is the last in the start row */
regStart += ref_in_start_stripe;
- regSize = stripSize - ref_in_start_stripe;
/* initialize count to sectors from startref to end
of strip */
+ regSize = stripSize - ref_in_start_stripe;
}
+ /* add complete rows in the middle of the transfer */
if (numRows > 2)
- /* Add complete rows in the middle of the transfer */
regSize += (numRows-2) << raid->stripeShift;
- /* if IO ends within first strip of last row */
+ /* if IO ends within first strip of last row*/
if (endStrip == endRow*raid->rowDataSize)
regSize += ref_in_end_stripe+1;
else
regSize += stripSize;
+ } else {
+ /*
+ * For Uneven span region lock optimization.
+ * If the start strip is the last in the start row
+ */
+ if (start_strip == (get_strip_from_row(instance, ld, start_row, map) +
+ SPAN_ROW_DATA_SIZE(map, ld, startlba_span) - 1)) {
+ regStart += ref_in_start_stripe;
+ /* initialize count to sectors from
+ * startRef to end of strip
+ */
+ regSize = stripSize - ref_in_start_stripe;
+ }
+ /* Add complete rows in the middle of the transfer*/
+
+ if (numRows > 2)
+ /* Add complete rows in the middle of the transfer*/
+ regSize += (numRows-2) << raid->stripeShift;
+
+ /* if IO ends within first strip of last row */
+ if (endStrip == get_strip_from_row(instance, ld, endRow, map))
+ regSize += ref_in_end_stripe + 1;
+ else
+ regSize += stripSize;
}
pRAID_Context->timeoutValue = map->raidMap.fpPdIoTimeoutSec;
/*Get Phy Params only if FP capable, or else leave it to MR firmware
to do the calculation.*/
if (io_info->fpOkForIo) {
- retval = MR_GetPhyParams(instance, ld, start_strip,
- ref_in_start_stripe,
- &io_info->pdBlock,
- &io_info->devHandle, pRAID_Context,
- map);
- /* If IO on an invalid Pd, then FP i snot possible */
+ retval = io_info->IoforUnevenSpan ?
+ mr_spanset_get_phy_params(instance, ld,
+ start_strip, ref_in_start_stripe,
+ io_info, pRAID_Context, map) :
+ MR_GetPhyParams(instance, ld, start_strip,
+ ref_in_start_stripe, io_info,
+ pRAID_Context, map);
+ /* If IO on an invalid Pd, then FP is not possible.*/
if (io_info->devHandle == MR_PD_INVALID)
io_info->fpOkForIo = FALSE;
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))
+ retval = io_info->IoforUnevenSpan ?
+ mr_spanset_get_phy_params(instance, ld,
+ start_strip + stripIdx,
+ ref_in_start_stripe, io_info,
+ pRAID_Context, map) :
+ MR_GetPhyParams(instance, ld,
+ start_strip + stripIdx, ref_in_start_stripe,
+ io_info, pRAID_Context, map);
+ if (!retval)
return TRUE;
}
}
+
+#if SPAN_DEBUG
+ /* Just for testing what arm we get for strip.*/
+ if (io_info->IoforUnevenSpan)
+ get_arm_from_strip(instance, ld, start_strip, map);
+#endif
return TRUE;
}
+/*
+******************************************************************************
+*
+* This routine pepare spanset info from Valid Raid map and store it into
+* local copy of ldSpanInfo per instance data structure.
+*
+* Inputs :
+* map - LD map
+* ldSpanInfo - ldSpanInfo per HBA instance
+*
+*/
+void mr_update_span_set(struct MR_FW_RAID_MAP_ALL *map,
+ PLD_SPAN_INFO ldSpanInfo)
+{
+ u8 span, count;
+ u32 element, span_row_width;
+ u64 span_row;
+ struct MR_LD_RAID *raid;
+ LD_SPAN_SET *span_set, *span_set_prev;
+ struct MR_QUAD_ELEMENT *quad;
+ int ldCount;
+ u16 ld;
+
+
+ for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) {
+ ld = MR_TargetIdToLdGet(ldCount, map);
+ if (ld >= MAX_LOGICAL_DRIVES)
+ continue;
+ raid = MR_LdRaidGet(ld, map);
+ for (element = 0; element < MAX_QUAD_DEPTH; element++) {
+ for (span = 0; span < raid->spanDepth; span++) {
+ if (map->raidMap.ldSpanMap[ld].spanBlock[span].
+ block_span_info.noElements <
+ element + 1)
+ continue;
+ span_set = &(ldSpanInfo[ld].span_set[element]);
+ quad = &map->raidMap.ldSpanMap[ld].
+ spanBlock[span].block_span_info.
+ quad[element];
+
+ span_set->diff = quad->diff;
+
+ for (count = 0, span_row_width = 0;
+ count < raid->spanDepth; count++) {
+ if (map->raidMap.ldSpanMap[ld].
+ spanBlock[count].
+ block_span_info.
+ noElements >= element + 1) {
+ span_set->strip_offset[count] =
+ span_row_width;
+ span_row_width +=
+ MR_LdSpanPtrGet
+ (ld, count, map)->spanRowDataSize;
+ printk(KERN_INFO "megasas:"
+ "span %x rowDataSize %x\n",
+ count, MR_LdSpanPtrGet
+ (ld, count, map)->spanRowDataSize);
+ }
+ }
+
+ span_set->span_row_data_width = span_row_width;
+ span_row = mega_div64_32(((quad->logEnd -
+ quad->logStart) + quad->diff),
+ quad->diff);
+
+ if (element == 0) {
+ span_set->log_start_lba = 0;
+ span_set->log_end_lba =
+ ((span_row << raid->stripeShift)
+ * span_row_width) - 1;
+
+ span_set->span_row_start = 0;
+ span_set->span_row_end = span_row - 1;
+
+ span_set->data_strip_start = 0;
+ span_set->data_strip_end =
+ (span_row * span_row_width) - 1;
+
+ span_set->data_row_start = 0;
+ span_set->data_row_end =
+ (span_row * quad->diff) - 1;
+ } else {
+ span_set_prev = &(ldSpanInfo[ld].
+ span_set[element - 1]);
+ span_set->log_start_lba =
+ span_set_prev->log_end_lba + 1;
+ span_set->log_end_lba =
+ span_set->log_start_lba +
+ ((span_row << raid->stripeShift)
+ * span_row_width) - 1;
+
+ span_set->span_row_start =
+ span_set_prev->span_row_end + 1;
+ span_set->span_row_end =
+ span_set->span_row_start + span_row - 1;
+
+ span_set->data_strip_start =
+ span_set_prev->data_strip_end + 1;
+ span_set->data_strip_end =
+ span_set->data_strip_start +
+ (span_row * span_row_width) - 1;
+
+ span_set->data_row_start =
+ span_set_prev->data_row_end + 1;
+ span_set->data_row_end =
+ span_set->data_row_start +
+ (span_row * quad->diff) - 1;
+ }
+ break;
+ }
+ if (span == raid->spanDepth)
+ break;
+ }
+ }
+#if SPAN_DEBUG
+ getSpanInfo(map, ldSpanInfo);
+#endif
+
+}
+
void
mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
struct LD_LOAD_BALANCE_INFO *lbInfo)
projects / users / hch / configfs.git / commitdiff