[SCSI] megaraid_sas: Add support for Uneven Span PRL11
MegaRAID older Firmware does not support uneven span configuration for PRL11.
E.g User wants to create 34 Driver PRL11 config, it was not possible using old
firmware, since it was not supported configuration in old firmware
Old Firmware expect even number of Drives in each span and same number of
physical drives at each span. Considering above design, 17 Drives at Span-0
and 17 drives at span-1 was not possible.
Now, using this new feature Firmware and Driver both required changes. New
Firmware can allow user to create 16 Drives at span-0 and 18 Drives at
span-1. This will allow user to create 34 Drives Uneven span PRL11.
RAID map is interface between Driver and FW to fetch all required
fields(attributes) for each Virtual Drives. Since legacy RAID map consider
Even Span design, there was no place to keep Uneven span information in
existing Raid map. Because of this limitation, for Uneven span VD, driver can
not use RAID map.
This patch address the changes required in Driver to support Uneven span PRL11
support.
1. Driver will find if Firmware has UnevenSpanSupport or not by reading
Controller Info.
2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its
capability of handling UnevenSpan PRL11 to the firmware.
3. Driver will update its copy of span info on each time Raid map update is
called.
4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver
uses Span Set info to find relavent fields for that particular Virtual
Disk)
More verbose prints will be available by setting "SPAN_DEBUG" to 1 at
compilation time.
Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 2371e5c..55a08d8 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -190,6 +190,12 @@
#define MR_DCMD_PD_LIST_QUERY 0x02010100
/*
+ * Global functions
+ */
+extern u8 MR_ValidateMapInfo(struct megasas_instance *instance);
+
+
+/*
* MFI command completion codes
*/
enum MFI_STAT {
@@ -729,8 +735,126 @@
*/
char package_version[0x60];
- u8 pad[0x800 - 0x6a0];
+ /*
+ * If adapterOperations.supportMoreThan8Phys is set,
+ * and deviceInterface.portCount is greater than 8,
+ * SAS Addrs for first 8 ports shall be populated in
+ * deviceInterface.portAddr, and the rest shall be
+ * populated in deviceInterfacePortAddr2.
+ */
+ u64 deviceInterfacePortAddr2[8]; /*6a0h */
+ u8 reserved3[128]; /*6e0h */
+
+ struct { /*760h */
+ u16 minPdRaidLevel_0:4;
+ u16 maxPdRaidLevel_0:12;
+
+ u16 minPdRaidLevel_1:4;
+ u16 maxPdRaidLevel_1:12;
+
+ u16 minPdRaidLevel_5:4;
+ u16 maxPdRaidLevel_5:12;
+
+ u16 minPdRaidLevel_1E:4;
+ u16 maxPdRaidLevel_1E:12;
+
+ u16 minPdRaidLevel_6:4;
+ u16 maxPdRaidLevel_6:12;
+
+ u16 minPdRaidLevel_10:4;
+ u16 maxPdRaidLevel_10:12;
+
+ u16 minPdRaidLevel_50:4;
+ u16 maxPdRaidLevel_50:12;
+
+ u16 minPdRaidLevel_60:4;
+ u16 maxPdRaidLevel_60:12;
+
+ u16 minPdRaidLevel_1E_RLQ0:4;
+ u16 maxPdRaidLevel_1E_RLQ0:12;
+
+ u16 minPdRaidLevel_1E0_RLQ0:4;
+ u16 maxPdRaidLevel_1E0_RLQ0:12;
+
+ u16 reserved[6];
+ } pdsForRaidLevels;
+
+ u16 maxPds; /*780h */
+ u16 maxDedHSPs; /*782h */
+ u16 maxGlobalHSPs; /*784h */
+ u16 ddfSize; /*786h */
+ u8 maxLdsPerArray; /*788h */
+ u8 partitionsInDDF; /*789h */
+ u8 lockKeyBinding; /*78ah */
+ u8 maxPITsPerLd; /*78bh */
+ u8 maxViewsPerLd; /*78ch */
+ u8 maxTargetId; /*78dh */
+ u16 maxBvlVdSize; /*78eh */
+
+ u16 maxConfigurableSSCSize; /*790h */
+ u16 currentSSCsize; /*792h */
+
+ char expanderFwVersion[12]; /*794h */
+
+ u16 PFKTrialTimeRemaining; /*7A0h */
+
+ u16 cacheMemorySize; /*7A2h */
+
+ struct { /*7A4h */
+ u32 supportPIcontroller:1;
+ u32 supportLdPIType1:1;
+ u32 supportLdPIType2:1;
+ u32 supportLdPIType3:1;
+ u32 supportLdBBMInfo:1;
+ u32 supportShieldState:1;
+ u32 blockSSDWriteCacheChange:1;
+ u32 supportSuspendResumeBGops:1;
+ u32 supportEmergencySpares:1;
+ u32 supportSetLinkSpeed:1;
+ u32 supportBootTimePFKChange:1;
+ u32 supportJBOD:1;
+ u32 disableOnlinePFKChange:1;
+ u32 supportPerfTuning:1;
+ u32 supportSSDPatrolRead:1;
+ u32 realTimeScheduler:1;
+
+ u32 supportResetNow:1;
+ u32 supportEmulatedDrives:1;
+ u32 headlessMode:1;
+ u32 dedicatedHotSparesLimited:1;
+
+
+ u32 supportUnevenSpans:1;
+ u32 reserved:11;
+ } adapterOperations2;
+
+ u8 driverVersion[32]; /*7A8h */
+ u8 maxDAPdCountSpinup60; /*7C8h */
+ u8 temperatureROC; /*7C9h */
+ u8 temperatureCtrl; /*7CAh */
+ u8 reserved4; /*7CBh */
+ u16 maxConfigurablePds; /*7CCh */
+
+
+ u8 reserved5[2]; /*0x7CDh */
+
+ /*
+ * HA cluster information
+ */
+ struct {
+ u32 peerIsPresent:1;
+ u32 peerIsIncompatible:1;
+ u32 hwIncompatible:1;
+ u32 fwVersionMismatch:1;
+ u32 ctrlPropIncompatible:1;
+ u32 premiumFeatureMismatch:1;
+ u32 reserved:26;
+ } cluster;
+
+ char clusterId[16]; /*7D4h */
+
+ u8 pad[0x800-0x7E4]; /*7E4 */
} __packed;
/*
@@ -1389,6 +1513,7 @@
u8 flag_ieee;
u8 issuepend_done;
u8 disableOnlineCtrlReset;
+ u8 UnevenSpanSupport;
u8 adprecovery;
unsigned long last_time;
u32 mfiStatus;