diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 115 |
1 files changed, 72 insertions, 43 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index f25a26252790..1441c35c58a3 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -148,44 +148,13 @@ struct RAID_CONTEXT { * starts in MPT IO Frames */ 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 + #define RAID_CONTEXT_NSEG_MASK 0x00F0 + #define RAID_CONTEXT_NSEG_SHIFT 4 + #define RAID_CONTEXT_TYPE_MASK 0x000F + #define RAID_CONTEXT_TYPE_SHIFT 0 + u16 nseg_type; u16 timeout_value; /* 0x02 -0x03 */ - union { - struct { -#if defined(__BIG_ENDIAN_BITFIELD) - u16 set_divert:4; - u16 cpu_sel: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 cpu_sel:4; - u16 set_divert:4; -#endif - } bits; - u16 s; - } routing_flags; /* 0x04 -0x05 routing flags */ + u16 routing_flags; // 0x04 -0x05 routing flags u16 virtual_disk_tgt_id; /* 0x06 -0x07 */ u64 reg_lock_row_lba; /* 0x08 - 0x0F */ u32 reg_lock_length; /* 0x10 - 0x13 */ @@ -200,18 +169,78 @@ struct RAID_CONTEXT_G35 { */ u8 span_arm; /* 0x1C span[7:5], arm[4:0] */ u16 config_seq_num; /* 0x1A -0x1B */ + union { + /* + * Bit format: + * --------------------------------- + * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | + * --------------------------------- + * Byte0 | numSGE[7]- numSGE[0] | + * --------------------------------- + * Byte1 |SD | resvd | numSGE 8-11 | + * -------------------------------- + */ + #define NUM_SGE_MASK_LOWER 0xFF + #define NUM_SGE_MASK_UPPER 0x0F + #define NUM_SGE_SHIFT_UPPER 8 + #define STREAM_DETECT_SHIFT 7 + #define STREAM_DETECT_MASK 0x80 + struct { #if defined(__BIG_ENDIAN_BITFIELD) /* 0x1C - 0x1D */ - u16 stream_detected:1; - u16 reserved:3; - u16 num_sge:12; + u16 stream_detected:1; + u16 reserved:3; + u16 num_sge:12; #else - u16 num_sge:12; - u16 reserved:3; - u16 stream_detected:1; + u16 num_sge:12; + u16 reserved:3; + u16 stream_detected:1; #endif + } bits; + u8 bytes[2]; + } u; u8 resvd2[2]; /* 0x1E-0x1F */ }; +#define MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT 1 +#define MR_RAID_CTX_ROUTINGFLAGS_C2D_SHIFT 2 +#define MR_RAID_CTX_ROUTINGFLAGS_FWD_SHIFT 3 +#define MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT 4 +#define MR_RAID_CTX_ROUTINGFLAGS_SBS_SHIFT 5 +#define MR_RAID_CTX_ROUTINGFLAGS_RW_SHIFT 6 +#define MR_RAID_CTX_ROUTINGFLAGS_LOG_SHIFT 7 +#define MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT 8 +#define MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_MASK 0x0F00 +#define MR_RAID_CTX_ROUTINGFLAGS_SETDIVERT_SHIFT 12 +#define MR_RAID_CTX_ROUTINGFLAGS_SETDIVERT_MASK 0xF000 + +static inline void set_num_sge(struct RAID_CONTEXT_G35 *rctx_g35, + u16 sge_count) +{ + rctx_g35->u.bytes[0] = (u8)(sge_count & NUM_SGE_MASK_LOWER); + rctx_g35->u.bytes[1] |= (u8)((sge_count >> NUM_SGE_SHIFT_UPPER) + & NUM_SGE_MASK_UPPER); +} + +static inline u16 get_num_sge(struct RAID_CONTEXT_G35 *rctx_g35) +{ + u16 sge_count; + + sge_count = (u16)(((rctx_g35->u.bytes[1] & NUM_SGE_MASK_UPPER) + << NUM_SGE_SHIFT_UPPER) | (rctx_g35->u.bytes[0])); + return sge_count; +} + +#define SET_STREAM_DETECTED(rctx_g35) \ + (rctx_g35.u.bytes[1] |= STREAM_DETECT_MASK) + +#define CLEAR_STREAM_DETECTED(rctx_g35) \ + (rctx_g35.u.bytes[1] &= ~(STREAM_DETECT_MASK)) + +static inline bool is_stream_detected(struct RAID_CONTEXT_G35 *rctx_g35) +{ + return ((rctx_g35->u.bytes[1] & STREAM_DETECT_MASK)); +} + union RAID_CONTEXT_UNION { struct RAID_CONTEXT raid_context; struct RAID_CONTEXT_G35 raid_context_g35; |