linux-toradex.git/drivers/scsi/device_handler/scsi_dh_rdac.c, branch v3.2.55

scsi: Fix up files implicitly depending on module.h inclusion

2011-10-31T23:31:24+00:00

The module.h header was implicitly present everywhere, so files
with no explicit include of the module infrastructure would build
anyway.  We are now removing the implicit include, and so we need
to call out the module.h file that we need explicitly.

Signed-off-by: Paul Gortmaker

[SCSI] scsi_dh_rdac: Adding NetApp as a brand name for rdac

2011-09-22T11:26:43+00:00

Signed-off-by: Vijay Chauhan 
Reviewed-by: Bob Stankey 
Reviewed-by: Babu Moger 
Acked-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Adding couple more vendor product ids

2011-09-22T11:02:57+00:00

This patch adds couple more Vendor/Product IDs for RDAC.. There are no
functional changes.

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley

[SCSI] dh_rdac: Associate HBA and storage in rdac_controller to support partitions in storage

2011-07-28T07:38:47+00:00

rdac hardware handler assumes that there is one-to-one relation ship
between the host and the controller w.r.t lun.  IOW, it does not
support "multiple storage partitions" within a storage.

Example:
HBA1 and HBA2 see lun 0 and 1 in storage A (1)
HBA3 and HBA4 see lun 0 and 1 in storage A (2)
HBA5 and HBA6 see lun 0 and 1 in storage A (3)

luns 0 and 1 in (1), (2) and (3) are totally different.

But, rdac handler treats the lun 0s (and lun 1s) as the same when
sending a mode select to the controller, which is wrong.

This patch makes the rdac hardware handler associate HBA and the
storage w.r.t lun (and not the host itself).

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

[SCSI] dh_rdac: Use WWID from C8 page instead of Subsystem id from C4 page to identify storage

2011-07-27T10:29:44+00:00

rdac hardware handler uses "Subsystem Identifier" from C4 inquiry page
to uniquely identify a storage. The problem with that is that if any
any of the bytes are non-ascii, subsys_id will all be spaces (hex
0x20). This creates lot of problems especially when there are multiple
rdac storages are connected to the server.

Use "Storage Array Unique Identifier" from C8 inquiry page, which is the
world wide unique identifier for the storage array, to uniquely identify
the storage.

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

treewide: fix potentially dangerous trailing ';' in #defined values/expressions

2011-07-21T12:10:00+00:00

All these are instances of
  #define NAME value;
or
  #define NAME(params_opt) value;

These of course fail to build when used in contexts like
  if(foo $OP NAME)
  while(bar $OP NAME)
and may silently generate the wrong code in contexts such as
  foo = NAME + 1;    /* foo = value; + 1; */
  bar = NAME - 1;    /* bar = value; - 1; */
  baz = NAME & quux; /* baz = value; & quux; */

Reported on comp.lang.c,
Message-ID: 
Initial analysis of the dangers provided by Keith Thompson in that thread.

There are many more instances of more complicated macros having unnecessary
trailing semicolons, but this pile seems to be all of the cases of simple
values suffering from the problem. (Thus things that are likely to be found
in one of the contexts above, more complicated ones aren't.)

Signed-off-by: Phil Carmody 
Signed-off-by: Jiri Kosina

[SCSI] scsi_dh_rdac : decide whether to send mode select based on operating mode

2011-05-01T15:47:41+00:00

Based on the operating modes, handler decides whether to send mode
select or not. Purpose here is to reduce io-shipping as much as
possible whenever there is an option.

Signed-off-by: Babu Moger 
Reviewed-by: Yanling Qi 
Reviewed-by: Sudhir Dachepalli 
Reviewed-by: Somasundaram Krishnasamy 
Reviewed-by: Bob Stankey 
Reviewed-by: Vijay Chauhan 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : Detect the different RDAC operating modes

2011-05-01T15:46:57+00:00

This patch detects different operating RDAC modes during the
discovery. It also collects the information about the preferred path.

Signed-off-by: Babu Moger 
Reviewed-by: Yanling Qi 
Reviewed-by: Sudhir Dachepalli 
Reviewed-by: Somasundaram Krishnasamy 
Reviewed-by: Bob Stankey 
Reviewed-by: Vijay Chauhan 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : Add definitions for different RDAC operating modes

2011-05-01T15:45:22+00:00

This patch adds definitions to support for different operating modes
for LSI rdac storage.  Currently, rdac support 3 operation modes.

1. RDAC mode(legacy)
2. AVT mode
3. IOSHIP mode

These definitions are used while activating the path(rdac_activate).

Signed-off-by: Babu Moger 
Reviewed-by: Yanling Qi 
Reviewed-by: Sudhir Dachepalli 
Reviewed-by: Somasundaram Krishnasamy 
Reviewed-by: Bob Stankey 
Reviewed-by: Vijay Chauhan 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Add MD36xxf into device list

2011-03-15T00:05:07+00:00

This patch is to add Dell MD36xxf array into the RDAC handler device list.

Singed-off-by: Yanqing Liu 
Signed-off-by: James Bottomley