diff options
| author | Krishna Gudipati <kgudipat@brocade.com> | 2011-06-13 15:39:36 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-06-29 15:24:46 -0500 |
| commit | 85ce928dbb87585042e7dfebe513f724eadebd5e (patch) | |
| tree | 121604b0dfe16ea282b378901e1b00d85f215f97 /drivers/scsi/bfa/bfi.h | |
| parent | 4d08e731bd6e3c5fd0b65bcfba22dc159fec3487 (diff) | |
[SCSI] bfa: Introduced generic address len pair to represent DMA memory chunk.
- Avoid the use of hardware defined structure bfi_sge_s for DMA
requests in host.
- Defined a generic address len pair to represent a DMA memory chunk
(bfi_alen_s).
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/bfa/bfi.h')
| -rw-r--r-- | drivers/scsi/bfa/bfi.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/scsi/bfa/bfi.h b/drivers/scsi/bfa/bfi.h index 72b69a0c3b5..6ef1ba50ecf 100644 --- a/drivers/scsi/bfa/bfi.h +++ b/drivers/scsi/bfa/bfi.h @@ -101,7 +101,7 @@ union bfi_addr_u { }; /* - * Scatter Gather Element + * Scatter Gather Element used for fast-path IO requests */ struct bfi_sge_s { #ifdef __BIG_ENDIAN @@ -116,6 +116,14 @@ struct bfi_sge_s { union bfi_addr_u sga; }; +/** + * Generic DMA addr-len pair. + */ +struct bfi_alen_s { + union bfi_addr_u al_addr; /* DMA addr of buffer */ + u32 al_len; /* length of buffer */ +}; + /* * Scatter Gather Page */ |