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/Documentation/scsi/ChangeLog.sym53c8xx

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  1Sat May 12 12:00 2001 Gerard Roudier (groudier@club-internet.fr)
  2	* version sym53c8xx-1.7.3c
  3	- Ensure LEDC bit in GPCNTL is cleared when reading the NVRAM.
  4	  Fix sent by Stig Telfer <stig@api-networks.com>.
  5	- Backport from SYM-2 the work-around that allows to support 
  6	  hardwares that fail PCI parity checking.
  7	- Check that we received at least 8 bytes of INQUIRY response 
  8	  for byte 7, that contains device capabilities, to be valid.
  9	- Define scsi_set_pci_device() as nil for kernel < 2.4.4.
 10	- + A couple of minor changes.
 11	  
 12Sat Apr 7 19:30 2001 Gerard Roudier (groudier@club-internet.fr)
 13	* version sym53c8xx-1.7.3b
 14	- Fix an unaligned LOAD from scripts (was used as dummy read).
 15	- In ncr_soft_reset(), only try to ABORT the current operation 
 16	  for chips that support SRUN bit in ISTAT1 and if SCRIPTS are 
 17	  currently running, as 896 and 1010 manuals suggest.
 18	- In the CCB abort path, do not assume that the CCB is currently 
 19	  queued to SCRIPTS. This is not always true, notably after a 
 20	  QUEUE FULL status or when using untagged commands.
 21
 22Sun Mar 4 18:30 2001 Gerard Roudier (groudier@club-internet.fr)
 23	* version sym53c8xx-1.7.3a
 24	- Fix an issue in the ncr_int_udc() (unexpected disconnect)
 25	  handling. If the DSA didn't match a CCB, a bad write to 
 26	  memory could happen.
 27
 28Mon Feb 12 22:30 2001 Gerard Roudier (groudier@club-internet.fr)
 29	* version sym53c8xx-1.7.3
 30	- Support for hppa.
 31	  Tiny patch sent to me by Robert Hirst.
 32	- Tiny patch for ia64 sent to me by Pamela Delaney.
 33
 34Tue Feb 6 13:30 2001 Gerard Roudier (groudier@club-internet.fr)
 35	* version sym53c8xx-1.7.3-pre1
 36	- Call pci_enable_device() as AC wants this to be done.
 37	- Get both the BAR cookies used by CPU and actual PCI BAR 
 38	  values used from SCRIPTS. Recent PCI chips are able to 
 39	  access themselves using internal cycles, but they compare 
 40	  BAR values to destination address to make decision.
 41	  Earlier chips simply use PCI transactions to access IO 
 42	  registers from SCRIPTS.
 43	  The bus_dvma_to_mem() interface that reverses the actual 
 44	  PCI BAR value from the BAR cookie is now useless.
 45	  This point had been discussed at the list and the solution 
 46	  got approved by PCI code maintainer (Martin Mares).
 47	- Merge changes for linux-2.4 that declare the host template 
 48	  in the driver object also when the driver is statically 
 49	  linked with the kernel.
 50	- Increase SCSI message size up to 12 bytes, given that 8 
 51	  bytes was not enough for the PPR message (fix).
 52	- Add field 'maxoffs_st' (max offset for ST data transfers).
 53	  The C1010 supports offset 62 in DT mode but only 31 in 
 54	  ST mode, to 2 different values for the max SCSI offset 
 55	  are needed. Replace the obviously wrong masking of the 
 56	  offset against 0x1f for ST mode by a lowering to 
 57	  maxoffs_st of the SCSI offset in ST mode.
 58	- Refine a work-around for the C1010-66. Revision 1 does 
 59	  not requires extra cycles in DT DATA OUT phase.
 60	- Add a missing endian-ization (abrt_tbl.addr).
 61	- Minor clean-up in the np structure for fields accessed 
 62	  from SCRIPTS that requires special alignments.
 63
 64Sun Sep 24 21:30 2000 Gerard Roudier (groudier@club-internet.fr)
 65	* version sym53c8xx-1.7.2
 66	- Remove the hack for PPC added in previous driver version.
 67	- Add FE_DAC feature bit to distinguish between 64 bit PCI 
 68	  addressing (FE_DAC) and 64 bit PCI interface (FE_64BIT).
 69	- Get rid of the boot command line "ultra:" argument.
 70	  This parameter wasn't that clever since we can use "sync:" 
 71	  for Ultra/Ultra2 settings, and for Ultra3 we may want to 
 72	  pass PPR options (for now only DT clocking).
 73	- Add FE_VARCLK feature bit that indicates that SCSI clock 
 74	  frequency may vary depending on board design and thus, 
 75	  the driver should try to evaluate the SCSI clock.
 76	- Simplify the way the driver determine the SCSI clock:
 77	  ULTRA3 -> 160 MHz, ULTRA2 -> 80 MHz otherwise 40 MHz.
 78	  Measure the SCSI clock frequency if FE_VARCLK is set.
 79	- Remove FE_CLK80 feature bit that got useless.
 80	- Add support for the SYM53C875A (Pamela Delaney).
 81
 82Wed Jul 26 23:30 2000 Gerard Roudier (groudier@club-internet.fr)
 83	* version sym53c8xx-1.7.1
 84	- Provide OpenFirmare path through the proc FS on PPC.
 85	- Download of on-chip SRAM using memcpy_toio() doesn't work 
 86	  on PPC. Restore previous method (MEMORY MOVE from SCRIPTS).
 87	- Remove trailing argument #2 from a couple of #undefs.
 88
 89Sun Jul 09 16:30 2000 Gerard Roudier (groudier@club-internet.fr)
 90	* version sym53c8xx-1.7.0
 91	- Remove the PROFILE C and SCRIPTS code.
 92	  This facility was not this useful and thus was not longer 
 93	  desirable given the increasing complexity of the driver code.
 94	- Merges from FreeBSD sym-1.6.2 driver:
 95	  * Clarify memory barriers needed by the driver for architectures 
 96	    that implement a weak memory ordering.
 97	  * Simpler handling of illegal phases and data overrun from 
 98	    SCRIPTS. These errors are now immediately reported to 
 99	    the C code by an interrupt.
100	  * Sync the residual handling code with sym-1.6.2 and now 
101	    report `resid' to user for linux version >= 2.3.99 
102	- General cleanup:
103	  Move definitions for barriers and IO/MMIO operations to the 
104	  sym53c8xx_defs.h header files. They are now shared by the 
105	  both drivers.
106	  Remove unused options that claimed to optimize for the 896.
107	  If fact, they were not this clever. :)
108	  Use SCSI_NCR_IOMAPPED instead of NCR_IOMAPPED.
109	  Remove a couple of unused fields from data structures.
110
111Thu May 11 12:40 2000 Pam Delaney (pam.delaney@lsil.com)
112	* version sym53c8xx-1.6b
113	- Merged version.
114
115Mon Apr 24 12:00 2000 Gerard Roudier (groudier@club-internet.fr)
116	* version sym53c8xx-1.5m
117	- Return value 1 (instead of 0) from the driver setup routine.
118	- Do not enable PCI DAC cycles. This just broke support for 
119	  SYM534C896 on sparc64. Problem fixed by David S. Miller.
120
121Fri Apr 14 9:00 2000 Pam Delaney (pam.delaney@lsil.com)
122	* version sym53c8xx-1.6b-9
123	- Added 53C1010_66 support.
124	- Small fix to integrity checking code.
125	- Removed requirement for integrity checking if want to run
126	  at ultra 3.
127 
128Sat Apr 1  12:00 2000 Gerard Roudier (groudier@club-internet.fr)
129	* version sym53c8xx-1.5l
130	- Tiny change for __sparc__ appeared in 2.3.99-pre4.1 that 
131	  applies to cache line size (? Probably from David S Miller).
132	- Make sure no data transfer will happen for Scsi_Cmnd requests 
133	  that supply SCSI_DATA_NONE direction (this avoids some BUG() 
134	  statement in the PCI code when a data buffer is also supplied).
135
136Sat Mar 11 12:00 2000 Gerard Roudier (groudier@club-internet.fr)
137	* version sym53c8xx-1.6b-5
138	- Test against expected data transfer direction from SCRIPTS.
139	- Add support for the new dynamic dma mapping kernel interface.
140	  Requires Linux-2.3.47 (tested with pre-2.3.47-6).
141	  Many thanks to David S. Miller for his preliminary changes 
142	  that have been useful guidelines.
143	- Get data transfer direction from the scsi command structure 
144	  (Scsi_Cmnd) with kernels that provide this information.
145
146Mon Mar  6 23:30 2000 Gerard Roudier (groudier@club-internet.fr)
147	* version sym53c8xx-1.5k
148	- Test against expected data transfer direction from SCRIPTS.
149	- Revert the change in 'ncr_flush_done_cmds()' but unmap the 
150	  scsi dma buffer prior to queueing the command to our done 
151	  list.
152	- Miscellaneous (minor) fixes in the code added in driver 
153	  version 1.5j.
154
155Mon Feb 14 4:00 2000 Pam Delaney (pam.delaney@lsil.com)
156 	* version sym53c8xx-pre-1.6b-2.
157	- Updated the SCRIPTS error handling of the SWIDE
158	  condition - to remove any reads of the sbdl
159	  register. Changes needed because the 896 and 1010
160	  chips will check parity in some special circumstances.
161	  This will cause a parity error interrupt if not in
162	  data phase.  Changes based on those made in the
163	  FreeBSD driver version 1.3.2.
164
165Sun Feb 20 11:00 2000 Gerard Roudier (groudier@club-internet.fr)
166	* version sym53c8xx-1.5j
167	- Add support for the new dynamic dma mapping kernel interface.
168	  Requires Linux-2.3.47 (tested with pre-2.3.47-6).
169	  Many thanks to David S. Miller for his preliminary changes 
170	  that have been useful guidelines, for having reviewed the 
171	  code and having tested this driver version on Ultra-Sparc.
172	- 2 tiny bugs fixed in the PCI wrapper that provides support 
173	  for early kernels without pci device structure.
174	- Get data transfer direction from the scsi command structure 
175	  (Scsi_Cmnd) with kernels that provide this information.
176	- Fix an old bug that only affected 896 rev. 1 when driver 
177	  profile support option was set in kernel configuration.
178
179Fri Jan 14 14:00 2000 Pam Delaney (pam.delaney@lsil.com)
180 	* version sym53c8xx-pre-1.6b-1.
181	- Merge parallel driver series 1.61 and 1.5e 
182
183Tue Jan 11 14:00 2000 Pam Delaney (pam.delaney@lsil.com)
184	* version sym53c8xx-1.61
185	- Added support for mounting disks on wide-narrow-wide
186	  scsi configurations. 
187	- Modified offset to be a maximum of 31 in ST mode, 
188	  62 in DT mode.
189	- Based off of 1.60
190
191Mon Jan 10 10:00 2000 Pam Delaney (pam.delaney@lsil.com)
192	* version sym53c8xx-1.60
193	- Added capability to use the integrity checking code
194	  in the kernel (optional).
195	-  Added PPR negotiation.
196	- Added support for 53C1010 Ultra 3 part.
197	- Based off of 1.5f
198
199Sat Jan 8  22:00 2000 Gerard Roudier (groudier@club-internet.fr)
200	* version sym53c8xx-1.5h
201	- Add year 2000 copyright.
202	- Display correctly bus signals when bus is detected wrong.
203	- Some fix for Sparc from DSM that went directly to kernel tree.
204
205Mon Dec 6  22:00 1999 Gerard Roudier (groudier@club-internet.fr)
206	* version sym53c8xx-1.5g
207	- Change messages written by the driver at initialisation and 
208	  through the /proc FS (rather cosmetic changes that consist in
209	  printing out the PCI bus number and PCI device/function).
210	- Ensure the SCRIPTS processor is stopped while calibrating the 
211	  SCSI clock (the initialisation code has been a bit reworked).
212	  Change moved to the FreeBSD sym_hipd driver).
213	- Some fixes in the MODIFY_DP/IGN_RESIDUE code and residual 
214	  calculation (moved from FreeBSD sym_hipd driver).
215	- Add NVRAM support for Tekram boards that use 24C16 EEPROM.
216	  Code moved from the FreeBSD sym_hipd driver, since it has 
217	  been that one that got this feature first.
218	- Definitely disable overlapped PCI arbitration for all dual 
219	  function chips, since I cannot make sure for what chip revisions 
220	  it is actually safe.
221	- Add support for the SYM53C1510D (also for ncr53c8xx).
222	- Fix up properly the PCI latency timer when needed or asked for.
223	- Get rid of the old PCI bios interface, but preserve kernel 2.0 
224	  compatibility from a simple wrapper.
225	- Update the poor Tekram sync factor table.
226	- Fix in a tiny 'printk' bug that may oops in case of extended 
227	  errors (unrecovered parity error, data overrun, etc ...)
228	  (Sent by Pamela Delaney from LSILOGIC)
229	- Remove the compilation condition about having to acquire the 
230	  io_request_lock since it seems to be a definite feature now.:)
231	- Change get_pages by GetPages since Linux >= 2.3.27 now wants 
232	  get_pages to ever be used as a kernel symbol (from 2.3.27).
233	- proc_dir structure no longer needed for kernel >= 2.3.27.
234
235Sun Oct  3  19:00 1999 Gerard Roudier (groudier@club-internet.fr)
236	* version sym53c8xx-1.5f
237	- Change the way the driver checks the PCI clock frequency, so 
238	  that overclocked PCI BUS up to 48 MHz will not be refused.
239	  The more the BUS is overclocked, the less the driver will 
240	  guarantee that its measure of the SCSI clock is correct.
241	- Backport some minor improvements of SCRIPTS from the sym_hipd 
242	  driver.
243	- Backport the code rewrite of the START QUEUE dequeuing (on 
244	  bad scsi status received) from the sym_hipd driver.
245
246Sat Sep 11  11:00 1999 Gerard Roudier (groudier@club-internet.fr)
247	* version sym53c8xx-1.5e
248	- New linux-2.3.13 __setup scheme support added.
249	- Cleanup of the extended error status handling:
250	  Use 1 bit per error type.
251	- Also save the extended error status prior to auto-sense.
252	- Add the FE_DIFF chip feature bit to indicate support of 
253	  diff probing from GPIO3 (825/825A/876/875).
254	- Remove the quirk handling that has been useless since day one.
255	- Work-around PCI chips being reported twice on some platforms.
256	- Add some redundant PCI reads in order to deal with common 
257	  bridge misbehaviour regarding posted write flushing.
258	- Add some other conditionnal code for people who have to deal 
259	  with really broken bridges (they will have to edit a source 
260	  file to try these options).
261	- Handle correctly (hopefully) jiffies wrap-around.
262	- Restore the entry used to detect 875 until revision 0xff.
263	  (I removed it inadvertently, it seems :) )
264	- Replace __initfunc() which is deprecated stuff by __init which 
265	  is not yet so. ;-)
266	- Rewrite the MESSAGE IN scripts more generic by using a MOVE 
267	  table indirect. Extended messages of any size are accepted now.
268	  (Size is limited to 8 for now, but a constant is just to be 
269	  increased if necessary)
270	- Fix some bug in the fully untested MDP handling:) and share 
271	  some code between MDP handling and residual calculation.
272	- Calculate the data transfer residual as the 2's complement 
273	  integer (A positive value in returned on data overrun, and 
274	  a negative one on underrun).
275	- Add support of some 'resource handling' for linux-2.3.13.
276	  Basically the BARs have been changed to something more complex 
277	  in the pci_dev structure.
278	- Remove some deprecated code.
279
280Sat Jun  5  11:00 1999 Gerard Roudier (groudier@club-internet.fr)
281	* version sym53c8xx-1.5c
282	- Do not negotiate on auto-sense if we are currently using 8 bit 
283	  async transfer for the target.
284	- Only check for SISL/RAID on i386 platforms.
285	  (A problem has been reported on PPC with that code).
286	- On MSG REJECT for a negotiation, the driver attempted to restart 
287	  the SCRIPT processor when this one was already running.
288
289Sat May 29  12:00 1999 Gerard Roudier (groudier@club-internet.fr)
290	* version sym53c8xx-1.5b
291	- Force negotiation prior auto-sense.
292	  This ensures that the driver will be able to grab the sense data 
293	  from a device that has received a BUS DEVICE RESET message from 
294	  another initiator.
295	- Complete all disconnected CCBs for a logical UNIT if we are told 
296	  about a UNIT ATTENTION for a RESET condition by this target.
297	- Add the control command 'cleardev' that allows to send a ABORT  
298	  message to a logical UNIT (for test purpose).
299
300Tue May 25  23:00 1999 Gerard Roudier (groudier@club-internet.fr)
301	* version sym53c8xx-1.5a
302	- Add support for task abort and bus device reset SCSI message 
303	  and implement proper synchonisation with SCRIPTS to handle 
304          correctly task abortion without races.
305	- Send an ABORT message (if untagged) or ABORT TAG message (if tagged)
306	  when the driver is told to abort a command that is disconnected and 
307	  complete the command with appropriate error.
308	  If the aborted command is not yet started, remove it from the start 
309	  queue and complete it with error.
310	- Add the control command 'resetdev' that allows to send a BUS 
311	  DEVICE RESET message to a target (for test purpose).
312	- Clean-up some unused or useless code.
313
314Fri May 21  23:00 1999 Gerard Roudier (groudier@club-internet.fr)
315	* version sym53c8xx-1.5
316	- Add support for CHMOV with Wide controllers.
317	- Handling of the SWIDE (low byte residue at the end of a CHMOV 
318	  in DATA IN phase with WIDE transfer when the byte count gets odd).
319	- Handling of the IGNORE WIDE RESIDUE message.
320	  Handled from SCRIPTS as possible with some optimizations when both 
321	  a wide device and the controller are odd at the same time (SWIDE 
322	  present and IGNORE WIDE RESIDUE message on the BUS at the same time).
323	- Check against data OVERRUN/UNDERRUN condition at the end of a data 
324	  transfer, whatever a SWIDE is present (OVERRUN in DATA IN phase) 
325	  or the SODL is full (UNDERRUN in DATA out phase).
326	- Handling of the MODIFY DATA POINTER message.
327	  This one cannot be handled from SCRIPTS, but hopefully it will not
328	  happen very often. :)
329	- Large rewrite of the SCSI MESSAGE handling.
330
331Sun May 9  11:00 1999 Gerard Roudier (groudier@club-internet.fr)
332	* version sym53c8xx-1.4
333	- Support for IMMEDIATE ARBITRATION.
334	  See the README file for detailed information about this feature.
335	  Requires both a compile option and a boot option.
336	- Minor SCRIPTS optimization in reselection pattern for LUN 0.
337	- Simpler algorithm to deal with SCSI command starvation.
338	  Just use 2 tag counters in flip/flop and switch to the other 
339	  one every 3 seconds.
340	- Do some work in SCRIPTS after the SELECT instruction and prior 
341	  to testing for a PHASE. SYMBIOS say this feature is working fine. 
342	  (Btw, only problems with Toshiba 3401B had been reported).
343	- Measure the PCI clock speed and do not attach controllers if 
344	  result is greater than 37 MHz. Since the precision of the 
345	  algorithm (from Stefan Esser) is better than 2%, this should 
346	  be fine.
347	- Fix the misdetection of SYM53C875E (was detected as a 876).
348	- Fix the misdetection of SYM53C810 not A (was detected as a 810A).
349	- Support for up to 256 TAGS per LUN (CMD_PER_LUN).
350	  Currently limited to 255 due to Linux limitation. :)
351	- Support for up to 508 active commands (CAN_QUEUE).
352	- Support for the 53C895A by Pamela Delaney <pam.delaney@lsil.com>
353	  The 53C895A contains all of the features of the 896 but has only 
354	  one channel and has a 32 bit PCI bus. It does 64 bit PCI addressing 
355	  using dual cycle PCI data transfers.
356	- Miscellaneous minor fixes.
357	- Some additions to the README.ncr53c8xx file.
358
359Tue Apr 15  10:00 1999 Gerard Roudier (groudier@club-internet.fr)
360	* version sym53c8xx-1.3e
361	- Support for any number of LUNs (64) (SPI2-compliant).
362	  (Btw, this may only be ever useful under linux-2.2 ;-))
363
364Sun Apr 11  10:00 1999 Gerard Roudier (groudier@club-internet.fr)
365	* version sym53c8xx-1.3d
366	- Add 'hostid:#id' boot option. This option allows to change the 
367	  default SCSI id the driver uses for controllers.
368	- Make SCRIPTS not use self-mastering for PCI.
369	  There were still 2 places the driver used this feature of the 
370	  53C8XX family.
371	- Move some data structures (nvram layouts and driver set-up) to 
372	  the sym53c8xx_defs.h file. So, the both drivers will share them.
373	- Set MAX LUNS to 16 (instead of 8).
374
375Sat Mar 20  21:00 1999 Gerard Roudier (groudier@club-internet.fr)
376	* version sym53c8xx-1.3b
377	- Add support for NCR PQS PDS.
378	  James Bottomley <James.Bottomley@columbiasc.ncr.com>
379	- Allow value 0 for host ID.
380	- Support more than 8 controllers (> 40 in fact :-) )
381	- Add 'excl=#ioaddr' boot option: exclude controller.
382	  (Version 1.3a driver)
383
384Thu Mar 11  23:00 1999 Gerard Roudier (groudier@club-internet.fr)
385	* version sym53c8xx-1.3   (8xx-896 driver bundle)
386	- Equivalent changes as ncr53c8xx-3.2 due to the driver bundle.
387	  (See Changelog.ncr53c8xx)
388	- Do a normal soft reset as first chip reset, since aborting current 
389	  operation may raise an interrupt we are not able to handle since 
390	  the interrupt handler is not yet established.
391
392Sat Mar 6  11:00 1999 Gerard Roudier (groudier@club-internet.fr)
393	* version sym53c8xx-1.2b
394	- Fix some oooold bug that hangs the bus if a device rejects a 
395	  negotiation. Btw, the corresponding stuff also needed some cleanup 
396	  and thus the change is a bit larger than it could have been.
397	- Still some typo that made compilation fail for 64 bit (trivial fix).
398
399Sun Feb 21  20:00 1999 Gerard Roudier (groudier@club-internet.fr)
400	* version sym53c8xx-1.2a
401	- The rewrite of the interrupt handling broke the SBMC interrupt 
402	  handling due to a 1 bit mask tiny error. Hopefully fixed.
403	- If INQUIRY came from a scatter list, the driver looked into 
404	  the scatterlist instead of the data.:) Since this should never
405	  happen, we just discard the data if use_sg is not zero.
406
407Fri Feb 12  23:00 1999 Gerard Roudier (groudier@club-internet.fr)
408	* version sym53c8xx-1.2
409	- Major rewrite of the interrupt handling and recovery stuff for 
410	  the support of non compliant SCSI removal, insertion and all 
411	  kinds of screw-up that may happen on the SCSI BUS.
412	  Hopefully, the driver is now unbreakable or may-be, it is just 
413	  quite brocken. :-)
414	  Many thanks to Johnson Russel (Symbios) for having responded to 
415	  my questions and for his interesting advices and comments about 
416	  support of SCSI hot-plug.
417	- Add 'recovery' option to driver set-up.
418	- Negotiate SYNC data transfers with CCS devices.
419	- Deal correctly with 64 bit PCI address registers on Linux 2.2.
420	  Pointed out by Leonard Zubkoff.
421
422Sun Jan 31  18:00 1999 Gerard Roudier (groudier@club-internet.fr)
423	* version sym53c8xx-1.1a
424	- Some 896 chip revisions (all for now :-)), may hang-up if the 
425	  soft reset bit is set at the wrong time while SCRIPTS are running.
426	  We need to first abort the current SCRIPTS operation prior to 
427	  resetting the chip. This fix has been sent to me by SYMBIOS/LSI 
428	  and I just translated it into ncr53c8xx syntax.
429	  Must be considered 100 % trustable, unless I did some mistake 
430	  when translating it. :-)
431
432Sun Jan 24  18:00 1999 Gerard Roudier (groudier@club-internet.fr)
433	* version sym53c8xx-1.1
434	- Major rewrite of the SCSI parity error handling.
435	  The informations contained in the data manuals are incomplete about 
436	  this feature.
437	  I asked SYMBIOS about and got in reply the explanations that are 
438	  _indeed_ missing in the data manuals.
439	- Allow to tune request_irq() flags from the boot command line using 
440	  ncr53c8xx=irqm:??, as follows:
441	  a) If bit 0x10 is set in irqm, SA_SHIRQ flag is not used.
442	  b) If bit 0x20 is set in irqm, SA_INTERRUPT flag is not used.
443	  By default the driver uses both SA_SHIRQ and SA_INTERRUPT.
444	  Option 'ncr53c8xx=irqm:0x20' may be used when an IRQ is shared by 
445	  a 53C8XX adapter and a network board.
446	- Fix for 64 bit PCI address register calculation. (Lance Robinson)
447	- Fix for big-endian in phase mismatch handling. (Michal Jaegermann)
448
449Fri Jan  1  20:00 1999 Gerard Roudier (groudier@club-internet.fr)
450	* version sym53c8xx-1.0a
451	- Waiting list look-up didn't work for the first command of the list.
452	  Hopefully fixed, but tested on paper only. ;)
453	- Remove the most part of PPC specific code for Linux-2.2.
454	  Thanks to Cort.
455	- Some other minors changes.
456
457Sat Dec 19  21:00 1998 Gerard Roudier (groudier@club-internet.fr)
458	* version sym53c8xx-1.0
459	- Define some new IO registers for the 896 (istat1, mbox0, mbox1)
460	- Revamp slighly the Symbios NVRAM lay-out based on the excerpt of 
461	  the header file I received from Symbios.
462	- Check the PCI bus number for the boot order (Using a fast 
463	  PCI controller behing a PCI-PCI bridge seems sub-optimal).
464	- Disable overlapped PCI arbitration for the 896 revision 1.
465	- Reduce a bit the number of IO register reads for phase mismatch 
466	  by reading DWORDS at a time instead of BYTES.
467
468Thu Dec  3  24:00 1998 Gerard Roudier (groudier@club-internet.fr)
469	* version pre-sym53c8xx-0.18
470	- I received this afternoon a 896 from SYMBIOS and started testing  
471	  the driver with this beast. After having fixed 3 buglets, it worked  
472	  with all features enabled including the phase mismatch handling 
473	  from SCRIPTS. Since this feature is not yet tested enough, the 
474	  boot option 'ncr53c8xx=specf:1' is still required to enable the 
475	  driver to handle PM from SCRIPTS. 
476
477Sun Nov 29  18:00 1998 Gerard Roudier (groudier@club-internet.fr)
478	* version pre-sym53c8xx-0.17
479	- The SISL RAID change requires now remap_pci_mem() stuff to be 
480	  compiled for __i386__ when normal IOs are used.
481	- The PCI memory read from SCRIPTS that should ensure ordering 
482	  was in fact misplaced. BTW, this may explain why broken PCI 
483	  device drivers regarding ordering are working so well. ;-)
484	- Rewrite ncr53c8xx_setup (boot command line options) since the  
485	  binary code was a bit too bloated in my opinion.
486	- Make the code simpler in the wakeup_done routine.
487
488Tue Nov 24  23:00 1998 Gerard Roudier (groudier@club-internet.fr)
489	* version pre-sym53c8xx-0.16
490	- Add SCSI_NCR_OPTIMIZE_896_1 compile option and 'optim' boot option.
491	  When set, the driver unconditionnaly assumes that the interrupt 
492	  handler is called for command completion, then clears INTF, scans 
493	  the done queue and returns if some completed CCB is found. If no 
494	  completed CCB are found, interrupt handling will proceed normally.
495	  With a 896 that handles MA from SCRIPTS, this can be a great win, 
496	  since the driver will never performs PCI read transactions, but 
497	  only PCI write transactions that may be posted.
498	  If the driver haven't to also raise the SIGP this would be perfect.
499	  Even with this penalty, I think that this will work great.
500	  Obviously this optimization makes sense only if the IRQ is not 
501	  shared with another device.
502	- Still a buglet in the tags initial settings that needed to be fixed.
503	  It was not possible to disable TGQ at system startup for devices 
504	  that claim TGQ support. The driver used at least 2 for the queue 
505	  depth but did'nt keep track of user settings for tags depth lower 
506	  than 2.
507
508Thu Nov 19  23:00 1998 Gerard Roudier (groudier@club-internet.fr)
509	* version pre-sym53c8xx-0.15
510	- Add support for hardware LED control of the 896.
511	- Ignore chips that are driven by SISL RAID (DAC 960).
512	  Change sent by Leonard Zubkoff and slightly reworked.
513	- Prevent 810A rev 11 and 860 rev 1 from using cache line based 
514	  transactions since those early chip revisions may use such on 
515	  LOAD/STORE instructions (work-around).
516	- Remove some useless and bloat code from the pci init stuff.
517	- Do not use the readX()/writeX() kernel functions for __i386__, 
518	  since they perform useless masking operations in order to deal 
519	  with broken driver in 2.1.X kernel.
520
521Wed Nov 11  10:00 1998 Gerard Roudier (groudier@club-internet.fr)
522	* version pre-sym53c8xx-0.14
523	- The driver was unhappy when configured with default_tags > MAX_TAGS
524	  Hopefully doubly-fixed.
525	- Set PCI_PARITY in PCI_COMMAND register in not set (PCI fix-up).
526	- Print out some message if phase mismatch is handled from SCRIPTS.
527
528Sun Nov 1  14H00 1998 Gerard Roudier (groudier@club-internet.fr)
529	* version pre-sym53c8xx-0.13
530	- Some rewrite of the device detection code. This code had been 
531	  patched too much and needed to be face-lifted a bit.
532	  Remove all platform dependent fix-ups that was not needed or
533	  conflicted with some other driver code as work-arounds.
534	  Reread the NVRAM before the calling of ncr_attach(). This spares 
535	  stack space and so allows to handle more boards.
536	  Handle 64 bit base addresses under linux-2.0.X.
537	  Set MASTER bit in PCI COMMAND register if not set.
538
539Wed Oct 30 22H00 1998 Gerard Roudier (groudier@club-internet.fr)
540	* version pre-sym53c8xx-0.12
541	- Damned! I just broke the driver for Alpha by leaving a stale 
542	  instruction in the source code. Hopefully fixed.
543	- Do not set PFEN when it is useless. Doing so we are sure that BOF 
544	  will be active, since the manual appears to be very unclear on what 
545	  feature is actually used by the chip when both PFEN and BOF are 
546	  set.
547
548Sat Oct 24 16H00 1998 Gerard Roudier (groudier@club-internet.fr)
549	* version pre-sym53c8xx-0.11
550	- LOAD/STORE instructions were miscompiled for register offsets 
551	  beyond 0x7f. This broke accesses to 896' new registers.
552	- Disable by default Phase Mismatch handling from SCRIPTS, since 
553	  current 896 rev.1 seems not to operate safely with the driver
554	  when this feature is enabled (and above LOAD/STORE fix applied).
555	  I will change the default to 'enabled' when this problem will be 
556	  solved.
557	  Using boot option 'ncr53c8xx=specf:1' enables this feature.
558	- Implement a work-around (DEL 472 - ITEM 5) that should allow the 
559	  driver to safely enable hardware phase mismatch with 896 rev. 1.
560
561Tue Oct 20 22H00 1998 Gerard Roudier (groudier@club-internet.fr)
562	* version pre-sym53c8xx-0.10
563	- Add the 53c876 description to the chip table. This is only useful 
564	  for printing the right name of the controller.
565	- Add additional checking of INQUIRY data:
566	  Check INQUIRY data received length is at least 7. Byte 7 of 
567	  inquiry data contains device features bits and the driver might 
568	  be confused by garbage. Also check peripheral qualifier.
569	- Use a 1,3,5,...MAXTAGS*2+1 tag numbering. Previous driver could  
570	  use any tag number from 1 to 253 and some non conformant devices  
571	  might have problems with large tag numbers.
572	- Use NAME53C and NAME53C8XX for chip name prefix chip family name.
573	  Just give a try using "sym53c" and "sym53c8xx" instead of "ncr53c" 
574	  and "ncr53c8xx". :-)
575
576Sun Oct 11 17H00 1998 Gerard Roudier (groudier@club-internet.fr)
577	* version pre-sym53c8xx-0.9
578	- DEL-441 Item 2 work-around for the 53c876 rev <= 5 (0x15).
579	- Break ncr_scatter() into 2 functions in order to guarantee best 
580	  possible code optimization for the case we get a scatter list.
581	- Add the code intended to support up to 1 tera-byte for 64 bit systems.
582	  It is probably too early, but I wanted to complete the thing.
583
584Sat Oct 3 14H00 1998 Gerard Roudier (groudier@club-internet.fr)
585	* version pre-sym53c8xx-0.8
586	- Do some testing with io_mapped and fix what needed to be so.
587	- Wait for SCSI selection to complete or time-out immediately after 
588	  the chip won arbitration, since executing SCRIPTS while the SCSI 
589	  core is performing SCSI selection breaks the selection procedure 
590	  at least for some chip revisions.
591	- Interrupt the SCRIPTS if a device does not go to MSG OUT phase after 
592	  having been selected with ATN. Such a situation is not recoverable, 
593	  better to fail when we are stuck.