Convert the driver to use a single DMA for fetching new commands instead
of two (one to access the circular input fifo, the other to get the SCB).
This costs us a command slot so the driver can now o

Convert the driver to use a single DMA for fetching new commands instead
of two (one to access the circular input fifo, the other to get the SCB).
This costs us a command slot so the driver can now only queue 254
simultaneous commands.

Have the kernel driver honor critical sections in sequencer code.

When prefetching S/G segments only pull a cacheline's worth but
never less than two elements. This reduces the impact of the
prefetch on the main data transfer when compared to the 128
byte fetches the driver used to do.

Add "bootverbose" logging for transfer negotiations.

Correct a bug in ahc_set_syncrate() that would prevent an update
of the sync parameters if only the ppr_options had changed.

Correct locking for calls to ahc_free_scb(). ahc_free_scb() is no
longer protected internally to simplify ports to other platforms.

Make sure we unfreeze our SIMQ if a resource shortage has occurred
and an SCB is been freed.

ahc_pci.c:
Turn on cacheline streaming for all controllers that support it.

Clarify diagnostic messages about PCI interrupts.

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ahc_set_transaction_status() takes an SCB. This makes it difficult to
use this helper function to report an error when SCB allocation fails.

Add Perforce RCSIDs for easy revision correlation to my local tree.

ahc_pci.c:
Bring back the AHC_ALLOW_MEMIO option at least until the
memory mapped I/O problem on the SuperMicro 370DR3 is
bette

Add Perforce RCSIDs for easy revision correlation to my local tree.

ahc_pci.c:
Bring back the AHC_ALLOW_MEMIO option at least until the
memory mapped I/O problem on the SuperMicro 370DR3 is
better understood.

aic7xxx.c:
If we see a spurious SCSI interrupt, attempt to clear it and
continue by unpausing the sequencer.

Change the interface to ahc_send_async(). Some async messages
need to be broadcast to all the luns of a target or all the
targets of a bus. This is easier to achieve by passing explicit
channel, target, and lun parameters instead of attempting to
construct a device info struct to match.

Filter the sync parameters for the PPR message in exactly the
same way we do for an old fashioned SDTR message.

Correct some typos and correct a panic message.

Handle rejected PPR messages.

In ahc_handle_msg_reject(), let ahc_build_transfer_msg() build
any additional transfer messages instead of doing this inline.

aic7xxx.h:
Increase the size of both msgout_buf and msgin_buf to
better accomodate PPR messages.

aic7xxx_freebsd.c:
Update for change in ahc_send_async() parameters.

aic7xxx_freebsd.h
Update for change in ahc_send_async() parameters.

Honor AHC_ALLOW_MEMIO.

aic7xxx_pci.c:
Check the error register before going into full blown PCI
interrupt handling. This avoids a few costly PCI configuration
space reads when we run our PCI interrupt handler because another
device sharing our interrupt line is more active than we are.

Also unpause the sequencer after processing a PCI interrupt.

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Remove the last two uses of ahc->unit in the FreeBSD version of the driver.
ahc->unit is depricated and will be going away as soon as the Linux
driver catches up. In the FreeBSD case, it is always i

Remove the last two uses of ahc->unit in the FreeBSD version of the driver.
ahc->unit is depricated and will be going away as soon as the Linux
driver catches up. In the FreeBSD case, it is always initialized to 0
and this caused some strangeness in registering multiple ahc controllers
with CAM.

Noticed by: Tor.Egge@fast.no

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Move aicasm to its own subdirectory.

Separate our platform independent hooks from core driver functionality
shared between platforms (FreeBSD and Linux at this time).

Add sequencer workarounds for

Move aicasm to its own subdirectory.

Separate our platform independent hooks from core driver functionality
shared between platforms (FreeBSD and Linux at this time).

Add sequencer workarounds for several chip->chipset interactions.

Correct external SCB corruption problem on aic7895 based cards (3940AUW).

Lots of cleanups resulting from the port to another OS.

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