This patch removes duplicated code in frame calculation &  adds
megasas_get_frame_count() that also takes into account the number of frames
that can be contained in the Main frame.
FW uses the frame count to pull sufficient number of frames from host memory.
Signed-off-by: NSumant Patro <Sumant.Patro@lsil.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

This patch has the following enhancements :
        a. handles new transition states of FW to support controller hotplug.
        b. It reduces by 1 the maximum cmds that the driver may send to FW.
        c. Sends "Stop Processing" cmd to FW before returning failure from reset routine
        d. Adds print in megasas_transition routine
        e. Sends "RESET" flag to FW to do a soft reset of controller
to move from Operational to Ready state.
	f. Sending correct pointer (cmd->sense) to pci_pool_free
Signed-off-by: NSumant Patro <Sumant.Patro@lsil.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Stall error handler if attempting recovery while an rport is
blocked.  This avoids device offline scenarios due to errors in
the error handler.

Reference implementation from lpfc/mptfc.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The system hostname will be used during a subsequent FDMI registration
with the fabric.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Refactored original code from qla_gs.c:qla2x00_rsnn_nn().
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

iIDMA (Intelligent Interleaved Direct Memory Access) allows for
the HBA hardware to send FC frames at the rate at which they can
be received by a target device.  By taking advantage of the
higher link rate, the HBA can maximize bandwidth utilization in a
heterogeneous multi-speed SAN.

Within a fabric topology, port speed detection is done via a Name
Server command (GFPN_ID) followed by a Fabric Management command
(GPSC).  In an FCAL/N2N topology, port speed is based on the HBA
link-rate.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Changes the obsolete Scsi_Cmnd to struct scsi_cmnd in the arm subdir
of the scsi-subsys.
Signed-off-by: NHenrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: NRussell King <rmk@arm.linux.org.uk>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Converts the obsolete Scsi_Cmnd to struct scsi_cmnd in the ips-driver.
Signed-off-by: NHenrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

following an email from John Adams <johna@onevista.com> to me with a patch
to enable tmscsim to use blocks up to 1MB and a discussion on linux-scsi,
below is a patch to enable clustering for tmscsim. I made it switchable
with a module parameter, with default "enable" - in case somebody gets
problems with it. Unfortunately, I was not able to check if this alone
lets you use any bigger blocks with a tape, as my tape seems to only
support 1 block size - only "mt setblk 1" is successful, any other value
fails. OTOH, testing on a P-133 showed that enabling clustering alone
improves throughput by 10% and reduces CPU load by another 10%, so, seems
a worthy thing to do. As for setting max_sectors, that might become a
separate patch...
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

When SCSI-2 they can support luns past 7 and sparse luns.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

support the report luns opcode
.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

This is from RHEL4. I do not have any info from our bugzilla. All
I could find was something like this thread
http://lkml.org/lkml/2005/1/7/346

Report lun for linux does not work. It may be our lun format code or
it may be the device. It is probably not worth it to add anything
special for this device, so the patch just adds BLIST_NOREPORTLUN.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

This is from RHEL4. This box can support
scsi2 and can also support BLIST_SPARSELUN | BLIST_LARGELUN.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

In scsi_execute_async()'s error path, a struct scsi_io_context
allocated with kmem_cache_alloc() is kfree()'d. Obviously
kmem_cache_free() should be used instead.
Signed-off-by: NArne Redlich <arne.redlich@xiranet.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

A new device (id 0x8650, nickname 'yosemite') support is added.
It's basically the same, except for following items:
- mapping of id and lun by firmware
- special handling for some commands in interrupt routine
- change of internal copy function for these special commands
- different reset handling code
- different shutdown notification command
Signed-off-by: NEd Lin <ed.lin@promise.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The payload_sz field in struct req_msg is not big enough to indicate
the size of req_msg, as its type is u8.
It is confirmed that this field is not used by firmware, so cancel
it here.
Signed-off-by: NEd Lin <ed.lin@promise.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

this overrun was spotted by coverity (cid #1403).

If type == ARRAY_SIZE(scsi_device_types), we are off by one.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Comment says "Read high byte first as some registers increment..."
but code doesn't guarantee that, I think:
	return ((ahd_inb(ahd, port+1) << 8) | ahd_inb(ahd, port));
Compiler can reorder it.

Make the order explicit.
Signed-off-by: NDenis Vlasenko <vda.linux@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

Fixed rejections and added aic7xxx code
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

device_reprobe() should return an error code.  When it does so,
scsi_device_reprobe() should propagate it back.
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

gcc 4.1 with some extra warnings show the following:

drivers/scsi/ipr.c:6361: warning: comparison of unsigned expression < 0 is always false
drivers/scsi/ipr.c:6385: warning: comparison of unsigned expression < 0 is always false
drivers/scsi/ipr.c:6415: warning: comparison of unsigned expression < 0 is always false

The problem is that rc is of the type u32, which can never be smaller than
zero, therefore all three error handling checks get useless.  This patch
changes it to a normal int, because all usages / all functions it get used
with expect an int.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Acked-by: NBrian King <brking@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Converts pci_module_init() to pci_register_driver() in the scsi subsys on
23 drivers which only return the value of pci_module_init().
Signed-off-by: NHenrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

another signdness warning from gcc 4.1

drivers/scsi/osst.c:5154: warning: comparison of unsigned expression < 0 is always false

The problem is that blk is defined as unsigned, but all usages of it are
normal int cases.  osst_get_frame_position() and osst_get_sector() return ints
and can return negative values.  If blk stays an unsigned int, the error check
is useless.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Free seagate.h from obsolete drivers/scsi.h, remove a double inclusion od
linux/delay.h and remove the unneeded scsi/scsi_ioctl.h
Signed-off-by: NHenrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NMichal Piotrowski <michal.k.k.piotrowski@gmail.com>
Acked-by: N"Moore, Eric Dean" <Eric.Moore@lsil.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NMichal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NMichal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

When testing on a Unisys machine it was discovered that the megaraid driver
would not initialize as it was requesting irq 162 instead of irq 1442 it
was assigned.  The problem was the irq number had been truncated by being
stored in an unsigned char.

This patches fixes that problem and the driver now appears to work.

The ioctl interface appears fundamentally broken as it exports the irq
number to user space in an unsigned char.
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

sparse "defined twice" warning
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NMichal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/dc395x.c:1224: warning: format '%i' expects type 'int', but argument 5 has type 'size_t'
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Adds support to attach SATA devices to ipr SAS adapters.
Signed-off-by: NBrian King <brking@us.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NHenrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Original patch from Ian Dall in bugzilla. Set command timeout as
specified by the SCSI layer rather than hardcode it to 30 seconds. I
have received a couple of reports of people hitting this one with
various tape configurations and the patch looks obviously correct.
                                                                  - Jes

From http://bugzilla.kernel.org/show_bug.cgi?id=6275

ian@beware.dropbear.id.au (Ian Dall):

The command sent to the card was using a 30second timeout regardless of the
timeout requested in the scsi command passed down from higher levels.
Signed-off-by: NJes Sorensen <jes@sgi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

aic94xx relies on external firmware and thus requires FW_LOADER.
Signed-off-by: NMuli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

This sg driver patch addresses the problem with larger
page sizes reported by Brian King in this post:
http://marc.theaimsgroup.com/?l=linux-scsi&m=115867718623631&w=2
Some other related matters are also addressed. Some of these
prevent oopses when the SG_SCATTER_SZ or scatter_elem_sz are
set to inappropriate values.

The scatter_elem_sz has been tested up to 4 MB which should
make the largest data transfer with one SCSI command, 32 MB
less one block, achievable with a relatively small number
of elements in the scatter gather list.

ChangeLog:
    - add scatter_elem_sz boot time parameter and sysfs module
      parameter that is initialized to SG_SCATTER_SZ
    - the driver will then adjust scatter_elem_sz to be the
      max(given(scatter_elem_sz), PAGE_SIZE)
      It will also round it up, if necessary, to be a power
      of two
    - clean up sg.h header, correct bad urls and some statements
      that are no longer valid
    - make the def_reserved_size sysfs module attribute writable
Signed-off-by: NDouglas Gilbert <dougg@torque.net>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>