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megaraid_sas: Support for max_io_size 1MB

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Driver will expose max sge = 256 (earlier it was 64) if firmware
supports extended IO size (1M).

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Martin Petersen <martin.petersen@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
sumit.saxena@avagotech.com
2015-08-31 17:23:31 +05:30
committed by Martin K. Petersen
parent 4dbbe3cec4
commit bd5f948426
3 changed files with 58 additions and 20 deletions
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10
drivers/scsi/megaraid/megaraid_sas_fusion.h
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@@ -35,8 +35,13 @@
#define _MEGARAID_SAS_FUSION_H_
/* Fusion defines */
#define MEGASAS_MAX_SZ_CHAIN_FRAME 1024
#define MEGASAS_CHAIN_FRAME_SZ_MIN 1024
#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009)
#define MEGASAS_MAX_CHAIN_SHIFT 5
#define MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK 0x400000
#define MEGASAS_MAX_CHAIN_SIZE_MASK 0x3E0
#define MEGASAS_256K_IO 128
#define MEGASAS_1MB_IO (MEGASAS_256K_IO * 4)
#define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256
#define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST 0xF0
#define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST 0xF1
@@ -119,7 +124,8 @@ struct RAID_CONTEXT {
__le16 configSeqNum;
u8 spanArm;
u8 priority;
u8 resvd2[2];
u8 numSGEExt;
u8 resvd2;
};
#define RAID_CTX_SPANARM_ARM_SHIFT (0)