Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/Documentation/scsi/ChangeLog.sym53c8xx b/Documentation/scsi/ChangeLog.sym53c8xx
new file mode 100644
index 0000000..ef985ec
--- /dev/null
+++ b/Documentation/scsi/ChangeLog.sym53c8xx
@@ -0,0 +1,593 @@
+Sat May 12 12:00 2001 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.3c
+ - Ensure LEDC bit in GPCNTL is cleared when reading the NVRAM.
+ Fix sent by Stig Telfer <stig@api-networks.com>.
+ - Backport from SYM-2 the work-around that allows to support
+ hardwares that fail PCI parity checking.
+ - Check that we received at least 8 bytes of INQUIRY response
+ for byte 7, that contains device capabilities, to be valid.
+ - Define scsi_set_pci_device() as nil for kernel < 2.4.4.
+ - + A couple of minor changes.
+
+Sat Apr 7 19:30 2001 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.3b
+ - Fix an unaligned LOAD from scripts (was used as dummy read).
+ - In ncr_soft_reset(), only try to ABORT the current operation
+ for chips that support SRUN bit in ISTAT1 and if SCRIPTS are
+ currently running, as 896 and 1010 manuals suggest.
+ - In the CCB abort path, do not assume that the CCB is currently
+ queued to SCRIPTS. This is not always true, notably after a
+ QUEUE FULL status or when using untagged commands.
+
+Sun Mar 4 18:30 2001 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.3a
+ - Fix an issue in the ncr_int_udc() (unexpected disconnect)
+ handling. If the DSA didn't match a CCB, a bad write to
+ memory could happen.
+
+Mon Feb 12 22:30 2001 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.3
+ - Support for hppa.
+ Tiny patch sent to me by Robert Hirst.
+ - Tiny patch for ia64 sent to me by Pamela Delaney.
+
+Tue Feb 6 13:30 2001 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.3-pre1
+ - Call pci_enable_device() as AC wants this to be done.
+ - Get both the BAR cookies used by CPU and actual PCI BAR
+ values used from SCRIPTS. Recent PCI chips are able to
+ access themselves using internal cycles, but they compare
+ BAR values to destination address to make decision.
+ Earlier chips simply use PCI transactions to access IO
+ registers from SCRIPTS.
+ The bus_dvma_to_mem() interface that reverses the actual
+ PCI BAR value from the BAR cookie is now useless.
+ This point had been discussed at the list and the solution
+ got approved by PCI code maintainer (Martin Mares).
+ - Merge changes for linux-2.4 that declare the host template
+ in the driver object also when the driver is statically
+ linked with the kernel.
+ - Increase SCSI message size up to 12 bytes, given that 8
+ bytes was not enough for the PPR message (fix).
+ - Add field 'maxoffs_st' (max offset for ST data transfers).
+ The C1010 supports offset 62 in DT mode but only 31 in
+ ST mode, to 2 different values for the max SCSI offset
+ are needed. Replace the obviously wrong masking of the
+ offset against 0x1f for ST mode by a lowering to
+ maxoffs_st of the SCSI offset in ST mode.
+ - Refine a work-around for the C1010-66. Revision 1 does
+ not requires extra cycles in DT DATA OUT phase.
+ - Add a missing endian-ization (abrt_tbl.addr).
+ - Minor clean-up in the np structure for fields accessed
+ from SCRIPTS that requires special alignments.
+
+Sun Sep 24 21:30 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.2
+ - Remove the hack for PPC added in previous driver version.
+ - Add FE_DAC feature bit to distinguish between 64 bit PCI
+ addressing (FE_DAC) and 64 bit PCI interface (FE_64BIT).
+ - Get rid of the boot command line "ultra:" argument.
+ This parameter wasn't that clever since we can use "sync:"
+ for Ultra/Ultra2 settings, and for Ultra3 we may want to
+ pass PPR options (for now only DT clocking).
+ - Add FE_VARCLK feature bit that indicates that SCSI clock
+ frequency may vary depending on board design and thus,
+ the driver should try to evaluate the SCSI clock.
+ - Simplify the way the driver determine the SCSI clock:
+ ULTRA3 -> 160 MHz, ULTRA2 -> 80 MHz otherwise 40 MHz.
+ Measure the SCSI clock frequency if FE_VARCLK is set.
+ - Remove FE_CLK80 feature bit that got useless.
+ - Add support for the SYM53C875A (Pamela Delaney).
+
+Wed Jul 26 23:30 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.1
+ - Provide OpenFirmare path through the proc FS on PPC.
+ - Download of on-chip SRAM using memcpy_toio() doesn't work
+ on PPC. Restore previous method (MEMORY MOVE from SCRIPTS).
+ - Remove trailing argument #2 from a couple of #undefs.
+
+Sun Jul 09 16:30 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.7.0
+ - Remove the PROFILE C and SCRIPTS code.
+ This facility was not this useful and thus was not longer
+ desirable given the increasing complexity of the driver code.
+ - Merges from FreeBSD sym-1.6.2 driver:
+ * Clarify memory barriers needed by the driver for architectures
+ that implement a weak memory ordering.
+ * Simpler handling of illegal phases and data overrun from
+ SCRIPTS. These errors are now immediately reported to
+ the C code by an interrupt.
+ * Sync the residual handling code with sym-1.6.2 and now
+ report `resid' to user for linux version >= 2.3.99
+ - General cleanup:
+ Move definitions for barriers and IO/MMIO operations to the
+ sym53c8xx_defs.h header files. They are now shared by the
+ both drivers.
+ Remove unused options that claimed to optimize for the 896.
+ If fact, they were not this clever. :)
+ Use SCSI_NCR_IOMAPPED instead of NCR_IOMAPPED.
+ Remove a couple of unused fields from data structures.
+
+Thu May 11 12:40 2000 Pam Delaney (pam.delaney@lsil.com)
+ * version sym53c8xx-1.6b
+ - Merged version.
+
+Mon Apr 24 12:00 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5m
+ - Return value 1 (instead of 0) from the driver setup routine.
+ - Do not enable PCI DAC cycles. This just broke support for
+ SYM534C896 on sparc64. Problem fixed by David S. Miller.
+
+Fri Apr 14 9:00 2000 Pam Delaney (pam.delaney@lsil.com)
+ * version sym53c8xx-1.6b-9
+ - Added 53C1010_66 support.
+ - Small fix to integrity checking code.
+ - Removed requirement for integrity checking if want to run
+ at ultra 3.
+
+Sat Apr 1 12:00 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5l
+ - Tiny change for __sparc__ appeared in 2.3.99-pre4.1 that
+ applies to cache line size (? Probably from David S Miller).
+ - Make sure no data transfer will happen for Scsi_Cmnd requests
+ that supply SCSI_DATA_NONE direction (this avoids some BUG()
+ statement in the PCI code when a data buffer is also supplied).
+
+Sat Mar 11 12:00 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.6b-5
+ - Test against expected data transfer direction from SCRIPTS.
+ - Add support for the new dynamic dma mapping kernel interface.
+ Requires Linux-2.3.47 (tested with pre-2.3.47-6).
+ Many thanks to David S. Miller for his preliminary changes
+ that have been useful guidelines.
+ - Get data transfer direction from the scsi command structure
+ (Scsi_Cmnd) with kernels that provide this information.
+
+Mon Mar 6 23:30 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5k
+ - Test against expected data transfer direction from SCRIPTS.
+ - Revert the change in 'ncr_flush_done_cmds()' but unmap the
+ scsi dma buffer prior to queueing the command to our done
+ list.
+ - Miscellaneous (minor) fixes in the code added in driver
+ version 1.5j.
+
+Mon Feb 14 4:00 2000 Pam Delaney (pam.delaney@lsil.com)
+ * version sym53c8xx-pre-1.6b-2.
+ - Updated the SCRIPTS error handling of the SWIDE
+ condition - to remove any reads of the sbdl
+ register. Changes needed because the 896 and 1010
+ chips will check parity in some special circumstances.
+ This will cause a parity error interrupt if not in
+ data phase. Changes based on those made in the
+ FreeBSD driver version 1.3.2.
+
+Sun Feb 20 11:00 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5j
+ - Add support for the new dynamic dma mapping kernel interface.
+ Requires Linux-2.3.47 (tested with pre-2.3.47-6).
+ Many thanks to David S. Miller for his preliminary changes
+ that have been useful guidelines, for having reviewed the
+ code and having tested this driver version on Ultra-Sparc.
+ - 2 tiny bugs fixed in the PCI wrapper that provides support
+ for early kernels without pci device structure.
+ - Get data transfer direction from the scsi command structure
+ (Scsi_Cmnd) with kernels that provide this information.
+ - Fix an old bug that only affected 896 rev. 1 when driver
+ profile support option was set in kernel configuration.
+
+Fri Jan 14 14:00 2000 Pam Delaney (pam.delaney@lsil.com)
+ * version sym53c8xx-pre-1.6b-1.
+ - Merge parallel driver series 1.61 and 1.5e
+
+Tue Jan 11 14:00 2000 Pam Delaney (pam.delaney@lsil.com)
+ * version sym53c8xx-1.61
+ - Added support for mounting disks on wide-narrow-wide
+ scsi configurations.
+ - Modified offset to be a maximum of 31 in ST mode,
+ 62 in DT mode.
+ - Based off of 1.60
+
+Mon Jan 10 10:00 2000 Pam Delaney (pam.delaney@lsil.com)
+ * version sym53c8xx-1.60
+ - Added capability to use the integrity checking code
+ in the kernel (optional).
+ - Added PPR negotiation.
+ - Added support for 53C1010 Ultra 3 part.
+ - Based off of 1.5f
+
+Sat Jan 8 22:00 2000 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5h
+ - Add year 2000 copyright.
+ - Display correctly bus signals when bus is detected wrong.
+ - Some fix for Sparc from DSM that went directly to kernel tree.
+
+Mon Dec 6 22:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5g
+ - Change messages written by the driver at initialisation and
+ through the /proc FS (rather cosmetic changes that consist in
+ printing out the PCI bus number and PCI device/function).
+ - Ensure the SCRIPTS processor is stopped while calibrating the
+ SCSI clock (the initialisation code has been a bit reworked).
+ Change moved to the FreeBSD sym_hipd driver).
+ - Some fixes in the MODIFY_DP/IGN_RESIDUE code and residual
+ calculation (moved from FreeBSD sym_hipd driver).
+ - Add NVRAM support for Tekram boards that use 24C16 EEPROM.
+ Code moved from the FreeBSD sym_hipd driver, since it has
+ been that one that got this feature first.
+ - Definitely disable overlapped PCI arbitration for all dual
+ function chips, since I cannot make sure for what chip revisions
+ it is actually safe.
+ - Add support for the SYM53C1510D (also for ncr53c8xx).
+ - Fix up properly the PCI latency timer when needed or asked for.
+ - Get rid of the old PCI bios interface, but preserve kernel 2.0
+ compatibility from a simple wrapper.
+ - Update the poor Tekram sync factor table.
+ - Fix in a tiny 'printk' bug that may oops in case of extended
+ errors (unrecovered parity error, data overrun, etc ...)
+ (Sent by Pamela Delaney from LSILOGIC)
+ - Remove the compilation condition about having to acquire the
+ io_request_lock since it seems to be a definite feature now.:)
+ - Change get_pages by GetPages since Linux >= 2.3.27 now wants
+ get_pages to ever be used as a kernel symbol (from 2.3.27).
+ - proc_dir structure no longer needed for kernel >= 2.3.27.
+
+Sun Oct 3 19:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5f
+ - Change the way the driver checks the PCI clock frequency, so
+ that overclocked PCI BUS up to 48 MHz will not be refused.
+ The more the BUS is overclocked, the less the driver will
+ guarantee that its measure of the SCSI clock is correct.
+ - Backport some minor improvements of SCRIPTS from the sym_hipd
+ driver.
+ - Backport the code rewrite of the START QUEUE dequeuing (on
+ bad scsi status received) from the sym_hipd driver.
+
+Sat Sep 11 11:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5e
+ - New linux-2.3.13 __setup scheme support added.
+ - Cleanup of the extended error status handling:
+ Use 1 bit per error type.
+ - Also save the extended error status prior to auto-sense.
+ - Add the FE_DIFF chip feature bit to indicate support of
+ diff probing from GPIO3 (825/825A/876/875).
+ - Remove the quirk handling that has been useless since day one.
+ - Work-around PCI chips being reported twice on some platforms.
+ - Add some redundant PCI reads in order to deal with common
+ bridge misbehaviour regarding posted write flushing.
+ - Add some other conditionnal code for people who have to deal
+ with really broken bridges (they will have to edit a source
+ file to try these options).
+ - Handle correctly (hopefully) jiffies wrap-around.
+ - Restore the entry used to detect 875 until revision 0xff.
+ (I removed it inadvertently, it seems :) )
+ - Replace __initfunc() which is deprecated stuff by __init which
+ is not yet so. ;-)
+ - Rewrite the MESSAGE IN scripts more generic by using a MOVE
+ table indirect. Extended messages of any size are accepted now.
+ (Size is limited to 8 for now, but a constant is just to be
+ increased if necessary)
+ - Fix some bug in the fully untested MDP handling:) and share
+ some code between MDP handling and residual calculation.
+ - Calculate the data transfer residual as the 2's complement
+ integer (A positive value in returned on data overrun, and
+ a negative one on underrun).
+ - Add support of some 'resource handling' for linux-2.3.13.
+ Basically the BARs have been changed to something more complex
+ in the pci_dev structure.
+ - Remove some deprecated code.
+
+Sat Jun 5 11:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5c
+ - Do not negotiate on auto-sense if we are currently using 8 bit
+ async transfer for the target.
+ - Only check for SISL/RAID on i386 platforms.
+ (A problem has been reported on PPC with that code).
+ - On MSG REJECT for a negotiation, the driver attempted to restart
+ the SCRIPT processor when this one was already running.
+
+Sat May 29 12:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5b
+ - Force negotiation prior auto-sense.
+ This ensures that the driver will be able to grab the sense data
+ from a device that has received a BUS DEVICE RESET message from
+ another initiator.
+ - Complete all disconnected CCBs for a logical UNIT if we are told
+ about a UNIT ATTENTION for a RESET condition by this target.
+ - Add the control command 'cleardev' that allows to send a ABORT
+ message to a logical UNIT (for test purpose).
+
+Tue May 25 23:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5a
+ - Add support for task abort and bus device reset SCSI message
+ and implement proper synchonisation with SCRIPTS to handle
+ correctly task abortion without races.
+ - Send an ABORT message (if untagged) or ABORT TAG message (if tagged)
+ when the driver is told to abort a command that is disconnected and
+ complete the command with appropriate error.
+ If the aborted command is not yet started, remove it from the start
+ queue and complete it with error.
+ - Add the control command 'resetdev' that allows to send a BUS
+ DEVICE RESET message to a target (for test purpose).
+ - Clean-up some unused or useless code.
+
+Fri May 21 23:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.5
+ - Add support for CHMOV with Wide controllers.
+ - Handling of the SWIDE (low byte residue at the end of a CHMOV
+ in DATA IN phase with WIDE transfer when the byte count gets odd).
+ - Handling of the IGNORE WIDE RESIDUE message.
+ Handled from SCRIPTS as possible with some optimizations when both
+ a wide device and the controller are odd at the same time (SWIDE
+ present and IGNORE WIDE RESIDUE message on the BUS at the same time).
+ - Check against data OVERRUN/UNDERRUN condition at the end of a data
+ transfer, whatever a SWIDE is present (OVERRUN in DATA IN phase)
+ or the SODL is full (UNDERRUN in DATA out phase).
+ - Handling of the MODIFY DATA POINTER message.
+ This one cannot be handled from SCRIPTS, but hopefully it will not
+ happen very often. :)
+ - Large rewrite of the SCSI MESSAGE handling.
+
+Sun May 9 11:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.4
+ - Support for IMMEDIATE ARBITRATION.
+ See the README file for detailed information about this feature.
+ Requires both a compile option and a boot option.
+ - Minor SCRIPTS optimization in reselection pattern for LUN 0.
+ - Simpler algorithm to deal with SCSI command starvation.
+ Just use 2 tag counters in flip/flop and switch to the other
+ one every 3 seconds.
+ - Do some work in SCRIPTS after the SELECT instruction and prior
+ to testing for a PHASE. SYMBIOS say this feature is working fine.
+ (Btw, only problems with Toshiba 3401B had been reported).
+ - Measure the PCI clock speed and do not attach controllers if
+ result is greater than 37 MHz. Since the precision of the
+ algorithm (from Stefan Esser) is better than 2%, this should
+ be fine.
+ - Fix the misdetection of SYM53C875E (was detected as a 876).
+ - Fix the misdetection of SYM53C810 not A (was detected as a 810A).
+ - Support for up to 256 TAGS per LUN (CMD_PER_LUN).
+ Currently limited to 255 due to Linux limitation. :)
+ - Support for up to 508 active commands (CAN_QUEUE).
+ - Support for the 53C895A by Pamela Delaney <pam.delaney@lsil.com>
+ The 53C895A contains all of the features of the 896 but has only
+ one channel and has a 32 bit PCI bus. It does 64 bit PCI addressing
+ using dual cycle PCI data transfers.
+ - Miscellaneous minor fixes.
+ - Some additions to the README.ncr53c8xx file.
+
+Tue Apr 15 10:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.3e
+ - Support for any number of LUNs (64) (SPI2-compliant).
+ (Btw, this may only be ever useful under linux-2.2 ;-))
+
+Sun Apr 11 10:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.3d
+ - Add 'hostid:#id' boot option. This option allows to change the
+ default SCSI id the driver uses for controllers.
+ - Make SCRIPTS not use self-mastering for PCI.
+ There were still 2 places the driver used this feature of the
+ 53C8XX family.
+ - Move some data structures (nvram layouts and driver set-up) to
+ the sym53c8xx_defs.h file. So, the both drivers will share them.
+ - Set MAX LUNS to 16 (instead of 8).
+
+Sat Mar 20 21:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.3b
+ - Add support for NCR PQS PDS.
+ James Bottomley <James.Bottomley@columbiasc.ncr.com>
+ - Allow value 0 for host ID.
+ - Support more than 8 controllers (> 40 in fact :-) )
+ - Add 'excl=#ioaddr' boot option: exclude controller.
+ (Version 1.3a driver)
+
+Thu Mar 11 23:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.3 (8xx-896 driver bundle)
+ - Equivalent changes as ncr53c8xx-3.2 due to the driver bundle.
+ (See Changelog.ncr53c8xx)
+ - Do a normal soft reset as first chip reset, since aborting current
+ operation may raise an interrupt we are not able to handle since
+ the interrupt handler is not yet established.
+
+Sat Mar 6 11:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.2b
+ - Fix some oooold bug that hangs the bus if a device rejects a
+ negotiation. Btw, the corresponding stuff also needed some cleanup
+ and thus the change is a bit larger than it could have been.
+ - Still some typo that made compilation fail for 64 bit (trivial fix).
+
+Sun Feb 21 20:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.2a
+ - The rewrite of the interrupt handling broke the SBMC interrupt
+ handling due to a 1 bit mask tiny error. Hopefully fixed.
+ - If INQUIRY came from a scatter list, the driver looked into
+ the scatterlist instead of the data.:) Since this should never
+ happen, we just discard the data if use_sg is not zero.
+
+Fri Feb 12 23:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.2
+ - Major rewrite of the interrupt handling and recovery stuff for
+ the support of non compliant SCSI removal, insertion and all
+ kinds of screw-up that may happen on the SCSI BUS.
+ Hopefully, the driver is now unbreakable or may-be, it is just
+ quite brocken. :-)
+ Many thanks to Johnson Russel (Symbios) for having responded to
+ my questions and for his interesting advices and comments about
+ support of SCSI hot-plug.
+ - Add 'recovery' option to driver set-up.
+ - Negotiate SYNC data transfers with CCS devices.
+ - Deal correctly with 64 bit PCI address registers on Linux 2.2.
+ Pointed out by Leonard Zubkoff.
+
+Sun Jan 31 18:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.1a
+ - Some 896 chip revisions (all for now :-)), may hang-up if the
+ soft reset bit is set at the wrong time while SCRIPTS are running.
+ We need to first abort the current SCRIPTS operation prior to
+ resetting the chip. This fix has been sent to me by SYMBIOS/LSI
+ and I just translated it into ncr53c8xx syntax.
+ Must be considered 100 % trustable, unless I did some mistake
+ when translating it. :-)
+
+Sun Jan 24 18:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.1
+ - Major rewrite of the SCSI parity error handling.
+ The informations contained in the data manuals are incomplete about
+ this feature.
+ I asked SYMBIOS about and got in reply the explanations that are
+ _indeed_ missing in the data manuals.
+ - Allow to tune request_irq() flags from the boot command line using
+ ncr53c8xx=irqm:??, as follows:
+ a) If bit 0x10 is set in irqm, SA_SHIRQ flag is not used.
+ b) If bit 0x20 is set in irqm, SA_INTERRUPT flag is not used.
+ By default the driver uses both SA_SHIRQ and SA_INTERRUPT.
+ Option 'ncr53c8xx=irqm:0x20' may be used when an IRQ is shared by
+ a 53C8XX adapter and a network board.
+ - Fix for 64 bit PCI address register calculation. (Lance Robinson)
+ - Fix for big-endian in phase mismatch handling. (Michal Jaegermann)
+
+Fri Jan 1 20:00 1999 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.0a
+ - Waiting list look-up didn't work for the first command of the list.
+ Hopefully fixed, but tested on paper only. ;)
+ - Remove the most part of PPC specific code for Linux-2.2.
+ Thanks to Cort.
+ - Some other minors changes.
+
+Sat Dec 19 21:00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version sym53c8xx-1.0
+ - Define some new IO registers for the 896 (istat1, mbox0, mbox1)
+ - Revamp slighly the Symbios NVRAM lay-out based on the excerpt of
+ the header file I received from Symbios.
+ - Check the PCI bus number for the boot order (Using a fast
+ PCI controller behing a PCI-PCI bridge seems sub-optimal).
+ - Disable overlapped PCI arbitration for the 896 revision 1.
+ - Reduce a bit the number of IO register reads for phase mismatch
+ by reading DWORDS at a time instead of BYTES.
+
+Thu Dec 3 24:00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.18
+ - I received this afternoon a 896 from SYMBIOS and started testing
+ the driver with this beast. After having fixed 3 buglets, it worked
+ with all features enabled including the phase mismatch handling
+ from SCRIPTS. Since this feature is not yet tested enough, the
+ boot option 'ncr53c8xx=specf:1' is still required to enable the
+ driver to handle PM from SCRIPTS.
+
+Sun Nov 29 18:00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.17
+ - The SISL RAID change requires now remap_pci_mem() stuff to be
+ compiled for __i386__ when normal IOs are used.
+ - The PCI memory read from SCRIPTS that should ensure ordering
+ was in fact misplaced. BTW, this may explain why broken PCI
+ device drivers regarding ordering are working so well. ;-)
+ - Rewrite ncr53c8xx_setup (boot command line options) since the
+ binary code was a bit too bloated in my opinion.
+ - Make the code simpler in the wakeup_done routine.
+
+Tue Nov 24 23:00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.16
+ - Add SCSI_NCR_OPTIMIZE_896_1 compile option and 'optim' boot option.
+ When set, the driver unconditionnaly assumes that the interrupt
+ handler is called for command completion, then clears INTF, scans
+ the done queue and returns if some completed CCB is found. If no
+ completed CCB are found, interrupt handling will proceed normally.
+ With a 896 that handles MA from SCRIPTS, this can be a great win,
+ since the driver will never performs PCI read transactions, but
+ only PCI write transactions that may be posted.
+ If the driver haven't to also raise the SIGP this would be perfect.
+ Even with this penalty, I think that this will work great.
+ Obviously this optimization makes sense only if the IRQ is not
+ shared with another device.
+ - Still a buglet in the tags initial settings that needed to be fixed.
+ It was not possible to disable TGQ at system startup for devices
+ that claim TGQ support. The driver used at least 2 for the queue
+ depth but did'nt keep track of user settings for tags depth lower
+ than 2.
+
+Thu Nov 19 23:00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.15
+ - Add support for hardware LED control of the 896.
+ - Ignore chips that are driven by SISL RAID (DAC 960).
+ Change sent by Leonard Zubkoff and slightly reworked.
+ - Prevent 810A rev 11 and 860 rev 1 from using cache line based
+ transactions since those early chip revisions may use such on
+ LOAD/STORE instructions (work-around).
+ - Remove some useless and bloat code from the pci init stuff.
+ - Do not use the readX()/writeX() kernel functions for __i386__,
+ since they perform useless masking operations in order to deal
+ with broken driver in 2.1.X kernel.
+
+Wed Nov 11 10:00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.14
+ - The driver was unhappy when configured with default_tags > MAX_TAGS
+ Hopefully doubly-fixed.
+ - Set PCI_PARITY in PCI_COMMAND register in not set (PCI fix-up).
+ - Print out some message if phase mismatch is handled from SCRIPTS.
+
+Sun Nov 1 14H00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.13
+ - Some rewrite of the device detection code. This code had been
+ patched too much and needed to be face-lifted a bit.
+ Remove all platform dependent fix-ups that was not needed or
+ conflicted with some other driver code as work-arounds.
+ Reread the NVRAM before the calling of ncr_attach(). This spares
+ stack space and so allows to handle more boards.
+ Handle 64 bit base addresses under linux-2.0.X.
+ Set MASTER bit in PCI COMMAND register if not set.
+
+Wed Oct 30 22H00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.12
+ - Damned! I just broke the driver for Alpha by leaving a stale
+ instruction in the source code. Hopefully fixed.
+ - Do not set PFEN when it is useless. Doing so we are sure that BOF
+ will be active, since the manual appears to be very unclear on what
+ feature is actually used by the chip when both PFEN and BOF are
+ set.
+
+Sat Oct 24 16H00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.11
+ - LOAD/STORE instructions were miscompiled for register offsets
+ beyond 0x7f. This broke accesses to 896' new registers.
+ - Disable by default Phase Mismatch handling from SCRIPTS, since
+ current 896 rev.1 seems not to operate safely with the driver
+ when this feature is enabled (and above LOAD/STORE fix applied).
+ I will change the default to 'enabled' when this problem will be
+ solved.
+ Using boot option 'ncr53c8xx=specf:1' enables this feature.
+ - Implement a work-around (DEL 472 - ITEM 5) that should allow the
+ driver to safely enable hardware phase mismatch with 896 rev. 1.
+
+Tue Oct 20 22H00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.10
+ - Add the 53c876 description to the chip table. This is only useful
+ for printing the right name of the controller.
+ - Add additional checking of INQUIRY data:
+ Check INQUIRY data received length is at least 7. Byte 7 of
+ inquiry data contains device features bits and the driver might
+ be confused by garbage. Also check peripheral qualifier.
+ - Use a 1,3,5,...MAXTAGS*2+1 tag numbering. Previous driver could
+ use any tag number from 1 to 253 and some non conformant devices
+ might have problems with large tag numbers.
+ - Use NAME53C and NAME53C8XX for chip name prefix chip family name.
+ Just give a try using "sym53c" and "sym53c8xx" instead of "ncr53c"
+ and "ncr53c8xx". :-)
+
+Sun Oct 11 17H00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.9
+ - DEL-441 Item 2 work-around for the 53c876 rev <= 5 (0x15).
+ - Break ncr_scatter() into 2 functions in order to guarantee best
+ possible code optimization for the case we get a scatter list.
+ - Add the code intended to support up to 1 tera-byte for 64 bit systems.
+ It is probably too early, but I wanted to complete the thing.
+
+Sat Oct 3 14H00 1998 Gerard Roudier (groudier@club-internet.fr)
+ * version pre-sym53c8xx-0.8
+ - Do some testing with io_mapped and fix what needed to be so.
+ - Wait for SCSI selection to complete or time-out immediately after
+ the chip won arbitration, since executing SCRIPTS while the SCSI
+ core is performing SCSI selection breaks the selection procedure
+ at least for some chip revisions.
+ - Interrupt the SCRIPTS if a device does not go to MSG OUT phase after
+ having been selected with ATN. Such a situation is not recoverable,
+ better to fail when we are stuck.