- Based on same patch from Christoph Hellwig <hch@lst.de>

  - Get rid of all the indirection in the Scsi_Host private data and always
    put the gdth_ha_str directly into it.

  - Change all internal functions prototype to recieve an "gdth_ha_str *ha"
    pointer directlly and kill all that redundent access to the "gdth_ctr_tab[]"
    controller-table.
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The virt_ctr option allows to register a new scsi_host for each bus
on the raid controller.  This non-default option makes no sense with
the current scsi code and prevents cleaning up the host registration,
so remove it.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

shuffle scsi_host_template members such that they appear in the
order in which they are defined in the header.  this makes is easier
to verify when initializers are missing members.
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

They are direct equivalents to {read,write}[bwl].
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

  * Remove in-source changelog.  It's archived permanently in git and
    various kernel archives, and changelogs should exist purely in git.

  * Remove 2.4.x kernel support.  It is an active obstacle to
    modernizing this driver, at this point.  This includes killing
    gdth_kcompat.h which is 100% redundant in modern kernels.
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Split out per-device pci probing and put it under proper CONFIG_PCI.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Split eisa probing into it's own helper, and do proper error unwinding.
Protect EISA probind by the proper CONFIG_EISA symbol.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

(note: this is ontop of Jeff's pci cleanup patch)

Split out isa probing into a helper of it's own.  Error handling is
cleaned up, but errors are not propagated yet.  Also enclose the isa
probe under the proper CONFIG_ISA symbol instead of the !IA64 hack.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

  Rather than having internal commands abuse scsi_done to call
  gdth_scsi_done, have all the places that use to call scsi_done directly
  call gdth_scsi_done, which now checks whether the command was internal,
  and calls scsi_done if not.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

  - Use new scsi_eh_prep/restor_cmnd() for synchronous
    REQUEST_SENSE invocation.
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

  - Use new scsi_eh_prep/restor_cmnd() for synchronous
    REQUEST_SENSE invocation.
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

 - Drivers/transports that want to send a synchronous REQUEST_SENSE command
   as part of their .queuecommand sequence, have 2 new API's that facilitate
   in doing so and abstract them from scsi-ml internals.

   void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
	struct scsi_eh_save *sesci, unsigned char *cmnd,
	int cmnd_size, int sense_bytes)

   Will hijack a command and prepare it for request sense if needed.
   And will save any later needed info into a scsi_eh_save structure.

   void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
	struct scsi_eh_save *sesci);

   Will undo any changes done to a command by above function. Making
   it ready for completion.

 - Re-factor scsi_send_eh_cmnd() to use above APIs
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

  - regrouped variables for easier reviewing of next patch
  - Support of cmnd==NULL in call to scsi_send_eh_cmnd()
  - In the @sense_bytes case set transfer size to the minimum
    size of sense_buffer and passed @sense_bytes. cmnd[4] is
    set accordingly.
  - REQUEST_SENSE is set into cmnd[0] so if @sense_bytes is
    not Zero passed @cmnd should be NULL.
  - Also save/restore resid of failed command.
  - Adjust caller
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

I get this warnings on current git when CONFIG_PCI is not set :

drivers/scsi/fdomain.c:390: warning: 'PCI_dev' defined but not used
drivers/scsi/fdomain.c:1768: warning: 'fdomain_pci_tbl' defined but not used
Signed-off-by: NGabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Fix section mismatch in the Adaptec DPT SCSI Raid driver.

WARNING: vmlinux.o(.init.text+0x1fcd2): Section mismatch:
	reference to .exit.text:adpt_exit (between 'adpt_init' and 'ahc_linux_init')

This warning is due to adaptec device detection calling the exit routine on
failure to properly register the adaptec device.

The exit routine + call was added on July 30 by

	Commit: 55d9fcf5
	Author: Matthew Wilcox
	Subject: [SCSI] dpt_i2o: convert to SCSI hotplug model.

Mathew: isn't a module exit routine a little too strong to be calling on the
failure of a single device?  Module exit implies that other, non-failing
adaptec raid devices will also get shut down.
Signed-off-by: NJoe Korty <joe.korty@ccur.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The Coverity checker spotted that we have already oops'ed if "cmd"
was NULL.

Since "cmd" being NULL doesn't seem to be possible at this point this
patch removes the NULL check.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/arcmsr/arcmsr_hba.c:129: error: 'arcmsr_pci_error_detected' undeclared here (not in a function)
drivers/scsi/arcmsr/arcmsr_hba.c:130: error: 'arcmsr_pci_slot_reset' undeclared here (not in a function)
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Remove the useless references to the obsolete MODULE_PARM macro.
Signed-off-by: NRobert P. J. Day <rpjday@mindspring.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Change PortAddr to be an unsigned int instead of an unsigned short (IO
Port address are 24 bit on parisc).  Fix a couple of printk argument
warnings.  Remove the Kconfig marking as 'BROKEN'.

I haven't removed the #warning yet because virt_to_bus/bus_to_virt are
only eliminated for narrow boards.  Wide boards need more work.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Convert the call to virt_to_bus() into a call to dma_map_single().  Some
architectures may require different DMA addresses for different devices,
so allocate one overrun buffer per host rather than one for all cards.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Replace ASC_VADDR_TO_U32 and ASC_U32_TO_VADDR with an auto-expanding
array that maps pointers to 32-bit IDs and back.  One of the uses of
ASC_VADDR_TO_U32 was in error; it should have been using ADV_VADDR_TO_U32.

Also replace the use of virt_to_bus when setting the sense_address with
a call to dma_map_single() followed by dma_cache_sync.  This part cribbed
from the 53c700 driver.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

- remove the unnecessary map_single path.
- convert to use the new accessors for the sg lists and the parameters.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

- convert the statistics to not distinguish between single and sg xfers
- replace ASC_CEILING with DIV_ROUND_UP
- remove an obsolete comment
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

This rather complex function boiled down to calling virt_to_bus().
Also get rid of some obsolete defines and variables that could never vary.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

board->carrp is a duplicate of asc_dvc->carrier_buf, so cut out the
middle-man and assign directly to carrier_buf.  Move orig_reqp to adv_dvc
too, since it's wide-board specific.  Also eliminate an unnecessary BUG_ON
(we'll never get there with a NULL carrier_buf, and will crash if we do).
The bulk of this patch is rearranging structures so everything's declared
in the right order.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

It's somewhat neater to make this a pointer to one of two tables
than initialising an array in the driver.  Also delete the unused
AscSynIndexToPeriod and rename host_init_sdtr_index to min_sdtr_index
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

It's always a mistake to have your own index of boards; just use the
scsi host number.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The board lock was essentially identical with the host lock.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Replace ASC_DBG{,1,2,3,4,5} with a single variadic macro ASC_DBG.  As
suggested by Jeff Garzik, include DRV_NAME and __FUNCTION__ in the output.
Change all callers to no longer include the function name in the string.

Enabling ADVANSYS_DEBUG to test this feature shows a lot of other problems
that need to be fixed:
 - Reorder asc_prt_* functions now that their prototypes have been removed.
 - There is no longer a struct device in ASC_DVC_CFG/ADV_DVC_CFG, and it
   wasn't necessarily a PCI device to begin with.  Print the bus_id from
   asc_board->dev instead.
 - isr_callback no longer exists.
 - ASC_DBG_PRT_SCSI_CMND isn't being used, so delete asc_prt_scsi_cmnd
   too.
 - A missing semicolon
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

With the ASC and ADV libraries merged into the driver, there really is
no point in reporting their version numbers, or even trying to maintain
them.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

asc_board_t was simply a typedef for struct asc_board.  ASC_BOARDP()
can be replaced by shost_priv() except in the ASC_STATS* macros which
rely on the cast; add an explicit cast there.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

There were two blocks of ASC_IERR definitions; one for narrow and one for
wide boards.  Some of the same names were used (with the same values),
and some of the same values were used with different names.  This could
only lead to confusion, so I unified them in one block of definitions
with no overlapping values.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The interrupt number was being stored in 4-5 different places, each with
its own type, rules and usage.  Fix this by keeping an unsigned int in
the struct asc_board, and filling it in from the bus probe functions
(since it's different for each of the four bus types).  In order to do
this, we have to allocate the Scsi_Host in the bus probe functions too.
Then we can return an error from advansys_board_found, which requires
a little rearranging of code (and removing of the err_code variable).
Move the Wide Board flag setting into the PCI bus probe function.

Split the AscGetChipIRQ function into three functions (one for each bus
type that needs it) and add some commentary to explain what's going on.
Also get rid of the AscSetChipIRQ function as we only ever set the
interrupt number to the same value it already had.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Replace it with !ASC_NARROW_BOARD
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

It was only ever set; never tested, nor cleared.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

 - Don't need to set ASC_HOST_IN_RESET any more
 - Don't need to test scp->device->host for NULL -- if it's NULL, we
   couldn't've been called.
 - Use scmd_printk instead of ASC_PRINT
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The narrow board used two global structures to set up a command;
unfortunately they weren't locked, so with two boards in the machine,
one call to queuecommand could corrupt the data being used by the other
call to queuecommand.

Fix this by allocating asc_scsi_q on the stack (64 bytes) and using kmalloc
for the asc_sg_head (2k)
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The wide and narrow boards share identical handling of the return value,
except for some trivial error messages.  Move the handling to the common
end of the function.  Also move variable declarations to the arms of
the `if' that they're used in and delete some pointless comments.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The driver was saving a scsi_device for each target, but wasn't doing
anything useful with them.  Just delete the array.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Rearrange a lot of the functions in the file to get rid of all the forward
declarations.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>