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authorBoaz Harrosh <bharrosh@panasas.com>2007-12-13 06:47:40 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-01-30 14:03:40 -0500
commit30b0c37b27485a9cb897bfe3824f6f517b8c80d6 (patch)
tree22643da8e175ff7badf2413dc8c84b2e99613a6f /include/scsi/scsi_host.h
parentbb52d82f45df3a2661d88befba7c79a7db8be496 (diff)
[SCSI] implement scsi_data_buffer
In preparation for bidi we abstract all IO members of scsi_cmnd, that will need to duplicate, into a substructure. - Group all IO members of scsi_cmnd into a scsi_data_buffer structure. - Adjust accessors to new members. - scsi_{alloc,free}_sgtable receive a scsi_data_buffer instead of scsi_cmnd. And work on it. - Adjust scsi_init_io() and scsi_release_buffers() for above change. - Fix other parts of scsi_lib/scsi.c to members migration. Use accessors where appropriate. - fix Documentation about scsi_cmnd in scsi_host.h - scsi_error.c * Changed needed members of struct scsi_eh_save. * Careful considerations in scsi_eh_prep/restore_cmnd. - sd.c and sr.c * sd and sr would adjust IO size to align on device's block size so code needs to change once we move to scsi_data_buff implementation. * Convert code to use scsi_for_each_sg * Use data accessors where appropriate. - tgt: convert libsrp to use scsi_data_buffer - isd200: This driver still bangs on scsi_cmnd IO members, so need changing [jejb: rebased on top of sg_table patches fixed up conflicts and used the synergy to eliminate use_sg and sg_count] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi/scsi_host.h')
-rw-r--r--include/scsi/scsi_host.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 0fd4746ee39d..cb2bcab41dfb 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -136,9 +136,9 @@ struct scsi_host_template {
136 * the done callback is invoked. 136 * the done callback is invoked.
137 * 137 *
138 * This is called to inform the LLD to transfer 138 * This is called to inform the LLD to transfer
139 * cmd->request_bufflen bytes. The cmd->use_sg speciefies the 139 * scsi_bufflen(cmd) bytes. scsi_sg_count(cmd) speciefies the
140 * number of scatterlist entried in the command and 140 * number of scatterlist entried in the command and
141 * cmd->request_buffer contains the scatterlist. 141 * scsi_sglist(cmd) returns the scatterlist.
142 * 142 *
143 * return values: see queuecommand 143 * return values: see queuecommand
144 * 144 *