diff options
Diffstat (limited to 'include/scsi/sg.h')
| -rw-r--r-- | include/scsi/sg.h | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/include/scsi/sg.h b/include/scsi/sg.h index 8b50bb3da..6756f8d2f 100644 --- a/include/scsi/sg.h +++ b/include/scsi/sg.h @@ -12,10 +12,16 @@ Original driver (sg.h): * Copyright (C) 1998, 1999 Douglas Gilbert - Version: 2.1.34 (990603) - This version for later 2.1.x and 2.2.x series kernels - D. P. Gilbert (dgilbert@interlog.com, dougg@triode.net.au) - + Version: 2.3.35 (990708) + This version for 2.3 series kernels. It only differs from sg version + 2.1.35 used in the 2.2 series kernels by changes to wait_queue. This + in an internal kernel interface and should not effect users. + D. P. Gilbert (dgilbert@interlog.com, dougg@triode.net.au) + + Changes since 2.1.34 (990603) + - add queuing info into struct sg_scsi_id + - block negative timeout values + - add back write() wait on previous read() when no cmd queuing Changes since 2.1.33 (990521) - implement SG_SET_RESERVED_SIZE and associated memory re-org. - add SG_NEXT_CMD_LEN to override SCSI command lengths @@ -144,9 +150,10 @@ typedef struct sg_scsi_id { int scsi_id; /* scsi id of target device */ int lun; int scsi_type; /* TYPE_... defined in scsi/scsi.h */ + short h_cmd_per_lun;/* host (adapter) maximum commands per lun */ + short d_queue_depth;/* device (or adapter) maximum queue length */ int unused1; /* probably find a good use, set 0 for now */ int unused2; /* ditto */ - int unused3; } Sg_scsi_id; /* IOCTLs: ( _GET_s yield result via 'int *' 3rd argument unless @@ -205,6 +212,10 @@ typedef struct sg_scsi_id { #define SG_NEXT_CMD_LEN 0x2283 /* override SCSI command length with given number on the next write() on this file descriptor */ +/* Returns -EBUSY if occupied else takes as input: 0 -> do nothing, + 1 -> device reset or 2 -> bus reset (may not be activated yet) */ +#define SG_SCSI_RESET 0x2284 + #define SG_SCATTER_SZ (8 * 4096) /* PAGE_SIZE not available to user */ /* Largest size (in bytes) a single scatter-gather list element can have. |