diff options
author | Anton Altaparmakov <aia21@cantab.net> | 2005-06-25 14:27:27 +0100 |
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committer | Anton Altaparmakov <aia21@cantab.net> | 2005-06-25 14:27:27 +0100 |
commit | 38b22b6e9f46ab8f73ef5734f0e0a000766a9258 (patch) | |
tree | 2ccc41ef55918d3af43e444bde7648562a031559 /include/scsi/sg_request.h | |
parent | 3357d4c75f1fb67e7304998c4ad4e9a9fed66fa4 (diff) | |
parent | b3e112bcc19abd8e9657dca34a87316786e096f3 (diff) |
Automerge with /usr/src/ntfs-2.6.git.
Diffstat (limited to 'include/scsi/sg_request.h')
-rw-r--r-- | include/scsi/sg_request.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/scsi/sg_request.h b/include/scsi/sg_request.h new file mode 100644 index 00000000000..57ff525bdd3 --- /dev/null +++ b/include/scsi/sg_request.h @@ -0,0 +1,26 @@ +typedef struct scsi_request Scsi_Request; + +static Scsi_Request *dummy_cmdp; /* only used for sizeof */ + +typedef struct sg_scatter_hold { /* holding area for scsi scatter gather info */ + unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */ + unsigned short sglist_len; /* size of malloc'd scatter-gather list ++ */ + unsigned bufflen; /* Size of (aggregate) data buffer */ + unsigned b_malloc_len; /* actual len malloc'ed in buffer */ + void *buffer; /* Data buffer or scatter list (k_use_sg>0) */ + char dio_in_use; /* 0->indirect IO (or mmap), 1->dio */ + unsigned char cmd_opcode; /* first byte of command */ +} Sg_scatter_hold; + +typedef struct sg_request { /* SG_MAX_QUEUE requests outstanding per file */ + Scsi_Request *my_cmdp; /* != 0 when request with lower levels */ + struct sg_request *nextrp; /* NULL -> tail request (slist) */ + struct sg_fd *parentfp; /* NULL -> not in use */ + Sg_scatter_hold data; /* hold buffer, perhaps scatter list */ + sg_io_hdr_t header; /* scsi command+info, see <scsi/sg.h> */ + unsigned char sense_b[sizeof (dummy_cmdp->sr_sense_buffer)]; + char res_used; /* 1 -> using reserve buffer, 0 -> not ... */ + char orphan; /* 1 -> drop on sight, 0 -> normal */ + char sg_io_owned; /* 1 -> packet belongs to SG_IO */ + volatile char done; /* 0->before bh, 1->before read, 2->read */ +} Sg_request; |