patch-2.0.31 linux/drivers/scsi/ChangeLog.ncr53c8xx
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- Lines: 422
- Date:
Thu Aug 14 10:30:08 1997
- Orig file:
v2.0.30/linux/drivers/scsi/ChangeLog.ncr53c8xx
- Orig date:
Sat Aug 31 23:15:32 1996
diff -u --recursive --new-file v2.0.30/linux/drivers/scsi/ChangeLog.ncr53c8xx linux/drivers/scsi/ChangeLog.ncr53c8xx
@@ -1,3 +1,421 @@
+Sat July 26 18:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.4
+ Several clean-ups:
+ - Asynchronous pre-scaler calculation.
+ Synchronous divisor calculation.
+ - Use FE_ as feature identifier prefix instead of _F_.
+ - Change 'ns_sync' identifier to "minsync".
+ - Some others.
+ Apply some SPI2-R12 recommendations.
+ - Use Slow, Fast-10, Fast-20, Fast-40 SCSI instead of SCSI-2,
+ FAST SCSI-2, ULTRA, ULTRA-2.
+ - Reset the SCSI on bus mode change.
+
+Wed July 02 22:58 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.3c
+ - Add define SCSI_NCR_PCI_FIX_UP_SUPPORT for conditionnal compilation
+ of the corresponding pci fix-up code when a small driver is needed.
+ - Use "ncr53c8xx" as driver name for both request_irq() and
+ request_region(). Using different names confused 'lsdev'.
+ (Suggestion sent by Henrik Storner).
+
+Wed June 24 22:08 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.3b
+ - Print an error message on unexpected boot command line option.
+ - Switch to asynchronous data transfer mode after SCSI wide
+ negotiation.
+
+Wed June 24 22:08 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.3b
+ - Print an error message on unexpected boot command line option.
+ - Switch to asynchronous data transfer mode after SCSI wide
+ negotiation.
+
+Wed June 14 22:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.3a
+ - Add PCI LATENCY TIMER fixup code.
+ Increase it if necessary according to burst size.
+ Boot option bit : 'pcifix:4'
+ - On phase mismatch, calculate residual data size for all OUTPUT
+ phases. That's only required for interrupted DATA OUT phase, but
+ this information is usefull for problem solving.
+ - Add KERN_INFO to some messages printed to the log.
+ (Patch sent by Wolfram Kleff).
+
+Tue June 02 22:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.3
+ - NvRAM support code slightly improved (I think):
+ Use IO or MMIO according to driver setup for reading the NvRAM.
+ Use structures for NvRAM data instead of raw data.
+ - Prevent from queuing more than 1 command to the scsi SCRIPT with
+ negotiation attached when tagged command queueing is enabled.
+ - Fix-up for old 53C8XX chips that support PCI READ LINE but not
+ CACHE LINE SIZE. If the cache line size is unknown, set burst
+ to 8 dwords and disable READ LINE, otherwise set burst max to
+ the cache line size value.
+
+Sat May 24 12:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.2c (for linux-2.1.40)
+ - Remove reference to 'x86' symbol when MODULE is defined, since this
+ symbol is not exported for module loading.
+ The value of 'x86' is used for fixing up the PCI CACHE LINE SIZE
+ configuration register.
+ - Bytes/words read one bit at a time from the serial NVRAM were'nt
+ initialized with zero.
+ - Some comments added. Minor cosmetic changes.
+
+Mon May 19 20:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.2b
+ - Patch for NVRAM support by Richard Waltham applied.
+ The code detects Symbios NVRAM format and Tekram NVRAM format.
+ This enhancement allows to get hosts and devices user set up
+ from the NVRAM.
+ - Use the NVRAM contents when present to initialize user definable
+ target parameters.
+ - Update the README file.
+
+Sun May 11 22:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.1b
+ - Cosmetic changes.
+ - Some heavy testings under pre-linux-2.1.37-6
+
+Sun May 4 22:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.1a
+ - PFEN wrongly used for PREFETCH feature bit testing.
+ Changed to _F_PFEN.
+ - 2 SCR_COPY that need NO FLUSH bit to be removed had been missed
+ in tp->getscr[] script (loads SXFER and SCNTL3 on reselection).
+
+Sat May 3 22:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.1
+ - Use the NO FLUSH option for MOVE MEMORY (COPY) each time it is
+ possible. More than 100 COPY with NO FLUSH and 6 with FLUSH for
+ my configuration (max queued command / device = 8).
+ This option bit is removed from the script instance for chips
+ that donnot support prefetching.
+ - Rewrite the ncr_exception() routine more simple (I think) and
+ remove useless code.
+ - Change the data_in and data_out script management.
+ Use the bottom part of these scripts instead of the beginning.
+ That avoids to zero the scatter/gather array when a command is
+ queued (1k) and to deal with some weird IID on MOVE 0 bytes when
+ a target wants to transfer more bytes than expected.
+ - Misc. improvements in the init code.
+ - Remove IOMAPPED/MMIO automatic switching option.
+ Was useless and reported not reliable.
+ - Fix a double read of DSTAT and remove DFE testing in the
+ Phase mismatch service routine.
+ - Etc...
+
+Fri Apr 26 20:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.0a
+ - Add support if the Diamond FirePort 40 (SYM53C875J chip)
+
+Mon Apr 22 22:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 2.0
+ - incorporate __initdata and __initfunc directives in order to
+ allow 'init' to free unused memory after driver initialisations.
+ Patch sent by Roberto Fichera.
+ - rewrite the init code of the driver. Now a feature descriptor
+ is used for each real chip types. The code is a lot more clean,
+ since the driver uses device and revision ids only in the
+ detection procedure.
+ - add 'pcifix' boot command line. This command allows to fix up PCI
+ config space for new chips which support features based on the
+ cache line size and 'write and invalidate'.
+ - incorporate in the driver, the code used for error recovery
+ testing. This code is normally not compiled; have to define
+ SCSI_NCR_DEBUG_ERROR_RECOVERY in order to compile it.
+ - take into account actual SCSI bus mode for 53C895 LVD/SE controller.
+ In single ended mode only fast20 is supported.
+ (Just to not be late since such controllers are not yet available)
+
+
+Sat Apr 20 21:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 1.18f
+ - fix an old bug included in the initial port (version 0.0).
+ The driver allocated 10 bytes of static data and uses 12 bytes.
+ No danger, since data are generally aligned on 4 bytes boundary
+ and so byte 10 and 11 are free (I hope ...)
+
+Wed Apr 16 12:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 1.18e
+ - reset all when an unexpected data cycle is detected while
+ disconnecting.
+ - make changes to abort() ans reset() functions according to
+ Leonard's documentation.
+ - small fix in some message for hard errors.
+
+Sat Apr 5 13:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 1.18d
+ - Probe NCR pci device ids in reverse order if asked by user from
+ the boot command line. Suggested by Richard Waltham.
+ - Make a separate function that prints out verbose information on
+ severe error (assumed from hardware).
+ - Add the transfer period factor and the max commands per lun value
+ to the proc info data. If debug flags are set or verbosity is
+ greater than 1, debug flags and verbosity are returned in proc
+ info data.
+ - Update the documentation.
+
+Thu Mar 20 23:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * revision 1.18c
+ - Add special features support for NCR53C885 and NCR53C896 chip.
+ Quite obvious, but untested, and based on the fact that:
+ The 885 supports same features as the 875.
+ The 896 is a 64 bits PCI version of the 895.
+ - Improve recovery from SCSI GROSS ERRORS.
+ I can get such errors by making the driver negotiate offset 8 with
+ a disk and setting the ncr chip to a lower offset value.
+ I got bunches of errors that have been gracefully recovered by
+ the driver.
+ The driver now uses its timer handler in order to wait 2 sec. for
+ devices to settle after SCSI reset and so does not uselessly freeze
+ the system with interrupt masked for seconds.
+ - Enable 'burst op code fetch' and 'read line' for 815 chips.
+ - Use a 2 commands queue depth instead of 1 for devices that does
+ not support tagged command queuing.
+ - The ULTRA timing flag setting was based on the output resulting
+ period factor of the ncr and not on the negotiated one.
+ This flag setting was wrong only for 24 ns negotiated period factor.
+ - Some other minor changes and cleanups.
+
+Thu Feb 27 23:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h revision 1.18b
+ - 'On paper' support of the NCR53C895 Ultra-2 chip.
+ (Clock quadrupler + 7 clock divisors)
+ - Load the main part of the script into the on-board RAM.
+ - 810A rev. 0x11 PCI problem fixed.
+ This chip is now supported with all PCI features enabled and
+ 16 dwords burst transfers.
+ - Align on 32 boundary some internal structures.
+ That fixes the 810A problem and allows cache line bursting when
+ moving the global header (64 bytes) from/to CCBs to/from NCB.
+ - Synchronous parameters calculation rewritten. The driver
+ now uses all available clock divisors and will be able to support
+ clock frequencies that are not multiple of 40 Mhz if necessary.
+
+Sat Feb 8 22:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c - revision 1.17a
+ - IRQ mode set up from boot setup command.
+ irqm:0 open drain (default)
+ irqm:1 preserve initial setting (assumed from BIOS)
+ irqm:2 totem pole
+ - DIFF mode set up from boot setup command.
+ Suggested by Richard Waltham.
+ diff:0 never set up diff mode (default)
+ diff:1 set up diff mode according to initial setting (BIOS?)
+ diff:2 always set up diff mode
+ diff:3 set up diff mode if GPIO3 is zero (SYMBIOS boards)
+ - Change CONFIG option for LED support.
+ CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT allows LED support and
+ DIFF support for SYMBIOS boards and compatibles (clones?).
+ - Set 16 DWORD bursts for 810A rev. >= 0x12 since my SC200 with
+ such a chip have no problem with it (MB with Triton 2 HX).
+ 810A rev. 0x11 are set to 8 DWORD bursts since they may give
+ problems with PCI read multiple and Triton 2 HX.
+ Thanks to Stefan for this information.
+
+Sat Jan 25 22:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c - revision 1.17
+ - Controller LED support.
+ Only works with LED pin wired to GPIO_FETCHN, so probably with
+ all boards using SMDS BIOS.
+ This option can be enabled only if CONFIG_EXPERIMENTAL is set.
+ - Assume clock doubler for 875 chip when clock frequency measurement
+ result is 40 MHz. May help when some old stuff as SDMS BIOS 3.0
+ or some old driver has broken the normal BIOS settings.
+ - Add wide negotiation control from boot setup command.
+ May be usefull with systems using a 875 based board connected to
+ a wide device through a 50 pins to 68 pins converter.
+ - Add a "boot fail safe option" to the boot setup command line.
+ - Rewrite the "reset_command" routine.
+ Low-level driver are responsible to keep the involved command
+ alive. The new code seems to behave correctly.
+ - Change some variables used by the script from u_long to u_int32.
+ - Remove some useless code.
+
+Sun Jan 12 12:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c - revision 1.16e
+ - Add support of PCI burst length control from boot setup command.
+ burst:0 disable burst
+ burst:255 get burst from initial settings (BIOS settings?)
+ burst:#x set burst transfers to 1<<#x
+ - Only check xfer direction for common op-codes.
+ For all device specific / vendor specific opcodes the driver
+ now uses the xfer direction decided by the target.
+
+Sun Jan 05 12:00 1997 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c - revision 1.16d
+ - The driver is now able to process scsi commands without
+ knowledge of xfer data direction.
+ Stefan agreed with this change for Linux. This change is
+ not needed under FreeBSD since low-level drivers receive
+ the expected data direction for each scsi request.
+ - Save ctest5 features bits at start-up and restore them at
+ module release step.
+ Avoid side effects when a ncr driver which trusts bios
+ settings is reloaded (could be the ncr53c8xx itself).
+
+
+Wed Jan 01 23:30 1997 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c - revision 1.16c
+ - Bad decision about 20MHz for 13 ns period factor.
+ Was wrong, so I restore the previous algorithm.
+ - Burst length 128 not correctly set in dmode.
+
+Thu Dec 26 22:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h README.ncr53c8xx - revision 1.16b
+ - Remove useless code.
+ - Try to improve error recovery in case of abort and reset.
+ - Remove DEBUG_NEGO by default.
+ - Add boot setup command support.
+ Now, all experimental config options can be removed.
+ - Update README file.
+
+
+Mon Dec 23 23:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h - revision 1.16a
+ New display for speed ##.# MB/s (From Stefan)
+ - I add "WIDE" qualifier after ULTRA and FAST
+ - I get "FAST WIDE SCSI-2 20 MB/s" with my Atlas. That's nice.
+
+ Richard Waltham reports SYMBIOS set the 875 to 20 MB/s for 13 ns
+ period factor. I decide to trust SYMBIOS. 20 MB/s output speed
+ instead of 19.2 MB/s should not cause problem. The ncr is only able
+ to use 16.67 MB/s when 20 MB/s is not possible.
+
+ Fix from Markus Kossman: "Ultra SCSI enabled" wrongly printed
+ when not enabled.
+
+ Set DEBUG_NEGO by default in order to get reports about sync nego.
+ Will remove it in the next patch.
+
+Thu Dec 19 21:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h README.ncr53c8xx - revision 1.16
+ Incorporate new definitions in ncr53c8xx.h (From Stefan).
+ Check changes against Stefan's current version of the driver.
+ All seems ok.
+
+Sat Nov 30 21:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h
+ Make changes in order to support:
+ - Clock doubler and so 80 Mhz scsi clock for 875 chips.
+ - Sync transfers below 7.5 MB/sec.
+ Use Clock/2 between 5 and 10 Mega-transfers/s and Clock/4 below 5.
+ - Ultra SCSI data transfers.
+ - Offset 16.
+
+ Works with my configuration. However I cannot test Ultra transfers,
+ since my disks are only fast scsi-2.
+
+Tue Nov 28 21:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c
+ I received yesterday my Promise SCSI Ultra board.
+ NCR53C875 rev. 3 with clock doubler.
+ Add the code to support some bus features, the large 536 dma fifo and
+ burst 128. Works.
+
+Mon Nov 4 21:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h - revision 1.14c
+ Severall control command improvements:
+
+ - Allow to specify "all" to commands that apply to #target.
+ For example: "setsync all 255" sets asynchronous data
+ transfers for all targets on a bus.
+
+ - Allow to control disconnection privilege per device, as follow:
+ "setflag #target no_sync" disables disconnection for #target.
+ "setflag #target" with no flag specified reenables it.
+
+ Obviously #target may be specified as "all" in order to control
+ disconnection for all targets with a single control command.
+
+ - README file updated and some hints about SCSI problems solving added.
+
+Sun Oct 27 22:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h - revision 1.14b
+ Add the following config parameters:
+
+ - CONFIG_SCSI_NCR53C8XX_MAX_TAGS
+ Max number of queued tagged commands.
+ Allow from 2 to 12, default 4.
+
+ - CONFIG_SCSI_NCR53C8XX_SYNC
+ Synchronous transfers frequency in MHz.
+ Allow from 5 to 10, default 5, 0 means asynchronous.
+ (And so remove CONFIG_SCSI_NCR53C8XX_FORCE_ASYNCHRONOUS)
+
+Sun Oct 20 16:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c
+ ncr_scatter() rewritten.
+ remove "ncr dead" detection.
+
+Sun Oct 13 19:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h - revision 1.14a
+ Enabling some special features makes problems with some hardware.
+ So, disable them by default.
+ Add SCSI_NCR_SPECIAL_FEATURES define to play with.
+
+Sun Oct 13 14:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c ncr53c8xx.h
+ Incorporate Stefan's patch for clock frequency detection.
+ (Committed in FreeBSD/ncr.c rev. 1.81).
+ The driver then does about the following:
+ Assume 40 MHz clock for all ncr chips except:
+ - NCR53C860 chips:
+ Assume 80 Mhz clock.
+ - NCR53C875 chips:
+ If clock doubler enabled, disable it and assume 40 Mhz clock.
+ Else if (scntl3&7)=0 measure scsi clock frequency.
+ Else trust bios setting of scntl3&7 (3=40 Mhz, 5=80Mhz).
+
+Wed Oct 9 22:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c - release 1.14
+ For now, just change the clock detection as follow:
+ - If clock doubler selected by BIOS, assume 40 MHz clock since
+ clock doubler will be disabled by chip reset.
+ - Else if NCR53C860 assume 80 MHz clock.
+ - Else trust BIOS setting if (scntl3&7 >= 3)
+ - Else assume 40 MHz clock.
+
+Sat Oct 05 17:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c
+ Stefan sent me a patch that improves the clock frequency detection
+ of the driver. Stefan uses the general timer register stime1 in
+ order to measure as accurately as possible the scsi clock.
+ Works ok with my 825, but needs still testing. So will be
+ released later.
+
+Sun Sep 29 17:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c
+ Preserve dcntl/dmode/ctest3/ctest4 features bits at start-up.
+ Add the define option SCSI_NCR_TRUST_BIOS_SETTING.
+ - If this option is defined, the driver will preserve the
+ corresponding bits of io registers.
+ - Else, the driver will set features bits according to chip
+ and revision ids.
+
+Sun Sep 22 17:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.c
+ Remove useless fields and code and so spare cpu:
+ - profile data are accumulated in jiffies ticks and converted
+ to milli-seconds when read through proc fs.
+ - when IOMAPPED is not defined, try only MMIO.
+ (avoid testing a value in order to choose between IO and MMIO)
+
+Sun Sep 01 20:00 1996 Gerard Roudier (groudier@club-internet.fr)
+ * ncr53c8xx.h, ncr53c8xx.c - Version 1.13
+ Adaptation of the tagged command queuing depth control of the
+ FreeBSD driver to Linux. Now, tagged command queueing can be
+ disabled at run time by a "settags N 0" control command.
+ Add the following heuristic in order to manage intelligently (perhaps)
+ QUEUE_FULL status:
+ - Each time a QUEUE FULL status is returned by a device, disable tagged
+ command queuing for that device.
+ - Every 100 successfully complete commands, increment the maximum
+ queuable commands (up to the allowed limit).
+
Fri Aug 30 10:00 1996 Gerard Roudier (groudier@club-internet.fr)
* ncr53c8xx.c - Version 1.12c
Incorporate the changes of FreeBSD/ncr.c revision 1.76.
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