diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1998-08-25 09:12:35 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 1998-08-25 09:12:35 +0000 |
| commit | c7fc24dc4420057f103afe8fc64524ebc25c5d37 (patch) | |
| tree | 3682407a599b8f9f03fc096298134cafba1c9b2f /drivers/scsi/ChangeLog.ncr53c8xx | |
| parent | 1d793fade8b063fde3cf275bf1a5c2d381292cd9 (diff) | |
o Merge with Linux 2.1.116.
o New Newport console code.
o New G364 console code.
Diffstat (limited to 'drivers/scsi/ChangeLog.ncr53c8xx')
| -rw-r--r-- | drivers/scsi/ChangeLog.ncr53c8xx | 1314 |
1 files changed, 189 insertions, 1125 deletions
diff --git a/drivers/scsi/ChangeLog.ncr53c8xx b/drivers/scsi/ChangeLog.ncr53c8xx index e6adffd9f..3033cf972 100644 --- a/drivers/scsi/ChangeLog.ncr53c8xx +++ b/drivers/scsi/ChangeLog.ncr53c8xx @@ -1,5 +1,192 @@ -Fri Jan 2 18:00 1998 Gerard Roudier (groudier@club-internet.fr) - * Revision 2.5f +Sar Jul 18 13:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 3.0g + - Preliminary fixes for Big Endian (sent by Eddie C. Dost). + Big Endian architectures should work again with the driver. + Eddie's patch has been partially applied since current 2.1.109 + does not have all the Sparc changes of the vger tree. + - Use of BITS_PER_LONG instead of (~0UL == 0xffffffffUL) has fixed + the problem observed when the driver was compiled using EGCS or + PGCC. + +Mon Jul 13 20:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 3.0f + - Some spelling fixes. + - linux/config.h misplaced in ncr53c8xx.h + - MODULE_PARM stuff added for linux 2.1. + - check INQUIRY response data format is exactly 2. + - use BITS_PER_LONG if defined. + +Sun Jun 28 12:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 3.0e + - Some cleanup, spelling fixes, version checks, documentations + changes, etc ... + +Sat Jun 20 20:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 3.0c + - Add a boot setup option that allows to set up device queue depths + at boot-up. This option is very usefull since Linux does not + allow to change scsi device queue depth once the system has been + booted up. + +Sun Jun 15 23:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 3.0a + - Support for up to 64 TAGS per LUN. + - Rewrite the TARGET vs LUN capabilities management. + CmdQueue is now handled as a LUN capability as it shall be. + This also fixes a bug triggered when disabling tagged command + queuing for a device that had this feature enabled. + - Remove the ncr_opennings() stuff that was useless under Linux + and hard to understand to me. + - Add "setverbose" procfs driver command. It allows to tune + verbose level after boot-up. Setting this level to zero, for + example avoid flooding the syslog file. + - Add KERN_XXX to some printk's. + +Tue Jun 10 23:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 3.0 + - Linux config changes for 2.0.34: + Remove NVRAM detection config option. This option is now enabled + by default but can be disabled by editing the driver header file. + Add a PROFILE config option. + - Update Configure.help + - Add calls to new function mdelay() for milli-seconds delay if + kernel version >= 2.1.105. + - Replace all printf(s) by printk(s). After all, the ncr53c8xx is + a driver for Linux. + - Perform auto-sense on COMMAND TERMINATED. Not sure it is usefull. + - Some other minor changes. + +Tue Jun 4 23:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6n + - Code cleanup and simplification: + Remove kernel 1.2.X and 1.3.X support. + Remove the _old_ target capabilities table. + Remove the error recovery code that have'nt been really usefull. + Use a single alignment boundary (CACHE_LINE_SIZE) for data + structures. + - Several aggressive SCRIPTS optimizations and changes: + Reselect SCRIPTS code rewritten. + Support for selection/reselection without ATN. + And some others. + - Miscallaneous changes in the C code: + Count actual number of CCB queued to the controller (future use). + Lots of other minor changes. + +Wed May 13 20:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6m + - Problem of missed SCSI bus reset with the 53C895 fixed by + Richard Waltham. The 53C895 needs about 650 us for the bus + mode to settle. Delays used while resetting the controller + and the bus have been adjusted. Thanks Richard! + - Some simplification for 64 bit arch done ccb address testing. + - Add a check of the MSG_OUT phase after Selection with ATN. + - The new tagged queue stuff seems ok, so some informationnal + message have been conditionned by verbose >= 3. + - Donnot reset if a SBMC interrupt reports the same bus mode. + - Print out the whole driver set-up. Some options were missing and + the print statement was misplaced for modules. + - Ignore a SCSI parity interrupt if the chip is not connected to + the SCSI bus. + +Sat May 1 16:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6l + - Add CCB done queue support for Alpha and perhaps some other + architectures. + - Add some barriers to enforce memory ordering for x86 and + Alpha architectures. + - Fix something that looks like an old bug in the nego SIR + interrupt code in case of negotiation failure. + +Sat Apr 25 21:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6k + - Remove all accesses to the on-chip RAM from the C code: + Use SCRIPTS to load the on-chip RAM. + Use SCRIPTS to repair the start queue on selection timeout. + Use the copy of script in main memory to calculate the chip + context on phase mismatch. + - The above allows now to use the on-chip RAM without requiring + to get access to the on-chip RAM from the C code. This makes + on-chip RAM useable for linux-1.2.13 and for Linux-Alpha for + instance. + - Some simplifications and cleanups in the SCRIPTS and C code. + - Buglet fixed in parity error recovery SCRIPTS (never tested). + - Minor updates in README.ncr53c8xx. + +Wed Apr 15 21:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6j + - Incorporate changes from linux-2.1.95 ncr53c8xx driver version. + - Add SMP support for linux-2.1.95 and above. + - Fix a bug when QUEUE FULL is returned and no commands are + disconnected. This happens with Atlas I / L912 and may happen + with Atlas II / LXY4. + - Nail another one on CHECK condition when requeuing the command + for auto-sense. + - Call scsi_done() for all completed commands after interrupt + handling. + - Increase the done queue to 24 entries. + +Sat Apr 4 20:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6i + - CTEST0 is used by the 53C885 for Power Management and + priority setting between the 2 functions. + Use SDID instead as actual target number. Just have had to + overwrite it with SSID on reselection. + - Split DATA_IN and DATA_OUT scripts into 2 sub-scripts. + 64 segments are moved from on-chip RAM scripts. + If more segments, a script in main memory is used for the + additionnal segments. + - Since the SCRIPTS processor continues SCRIPTS execution after + having won arbitration, do some stuff prior to testing any SCSI + phase on reselection. This should have the vertue to process + scripts in parallel with the SCSI core performing selection. + - Increase the done queue to 12 entries. + +Sun Mar 29 12:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6h + - Some fixes. + +Tue Mar 26 23:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6g + - New done queue. 8 entries by default (6 always useable). + Can be increased if needed. + - Resources management using doubly linked queues. + - New auto-sense and QUEUE FULL handling that does not need to + stall the NCR queue any more. + - New CCB starvation avoiding algorithm. + - Prepare CCBs for SCSI commands that cannot be queued, instead of + inserting these commands into the waiting list. The waiting list + is now only used while resetting and when memory for CCBs is not + yet available? + +Sun Feb 8 22:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6f + - Some fixes in order to really support the 53C895, at least with + FAST-20 devices. + - Heavy changes in the target/lun resources management to allow + the scripts to jump directly to the CCB on reselection instead + of walking on the lun CCBs list. Up to 32 tags per lun are now + supported without script processor and PCI traffic overhead. + +Sun Jan 11 22:00 1998 Gerard Roudier (groudier@club-internet.fr) + * revision 2.6d + - new (different ?) implementation of the start queue: + Use a simple CALL to a launch script in the CCB. + - implement a minimal done queue (1 entry :-) ). + this avoid scanning all CCBs on INT FLY (Only scan all CCBs, on + overflow). Hit ratio is better than 99.9 % on my system, so no + need to have a larger done queue. + - generalization of the restart of CCB on special condition as + Abort, QUEUE FULL, CHECK CONDITION. + This has been called 'silly scheduler'. + - make all the profiling code conditionned by a config option. + This spare some PCI traffic and C code when this feature is not + needed. + - handle more cleanly the situation where direction is unknown. + The pointers patching is now performed by the SCRIPTS processor. + - remove some useless scripts instructions. + + Ported from driver 2.5 series: + ------------------------------ - Use FAST-5 instead of SLOW for slow scsi devices according to new SPI-2 draft. - Make some changes in order to accomodate with 875 rev <= 3 @@ -10,1136 +197,13 @@ Fri Jan 2 18:00 1998 Gerard Roudier (groudier@club-internet.fr) . Memory Read Line is not enabled for 875 and 875-like chips. . Programmed burst length set to 64 DWORDS (instead of 128). (Note: SYMBIOS uses 32 DWORDS for the SDMS BIOS) - -Sun Oct 26 12:00 1997 Gerard Roudier (groudier@club-internet.fr) - * revision 2.5e - Add 'buschk' boot option. This option enables checking of SCSI BUS data lines after SCSI RESET (set by default). (Submitted by Richard Waltham). - Update the README file. - -Sat Oct 4 18:00 1997 Gerard Roudier (groudier@club-internet.fr) - * revision 2.5d - Dispatch CONDITION MET and RESERVATION CONFLICT scsi status as OK driver status. - Update the README file and the Symbios NVRAM format definition with removable media flags values (available with SDMS 4.09). - -Sat Sep 20 21:00 1997 Gerard Roudier (groudier@club-internet.fr) - * revision 2.5c - Several PCI configuration registers fix-ups for powerpc. (Patch sent by Cort). - -Thu Aug 28 10:00 1997 Gerard Roudier (groudier@club-internet.fr) - * revision 2.5b - - Add 'ncr53c8xx' char pointer variable. This variable allows to - pass a boot command to the driver when it is loaded as a module. - Option separator is ' ' instead of ','. Example: - insmod <mod_path>/ncr53c8xx.o ncr53c8xx='verb:2 sync:0 specf:n' - - Always use 'driver_setup.settle_delay' for internal resets. - 2 seconds hardcoded is sometimes too short. Suggested by Richard W. - This delay may be shortenned in order to avoid spurious timeouts. - - Fix release module stuff that failed for more than 1 controller. - - For linux versions > 1.3.70, trust the 'dev_id' parameter passed - to the interrupt handler (dev_id = struct ncb *). - - Fix up in 'ncr_log_hard_error()' when the DSP points outside scripts. - Suggested by Stefan Esser. - -Tue Aug 23 23:43 1997 Gerard Roudier (groudier@club-internet.fr) - * revision 2.5a - - Update Configure.help for inclusion in linux-2.1.51/2/3 - - Use BASE_2 address from PCI config space instead of some - IO register for getting the on-board SRAM bus address. - - Remove error testing of pcibios_read/write functions. - These functions are intended to be used for successfully - detected PCI devices. Expecting error condition from them - is nothing but paranoia. - -Thu Aug 21 23:00 1997 Gerard Roudier (groudier@club-internet.fr) - * revision 2.5 - - 53C860 chip support fix. - - Move the 'host_status' to the last DWORD of the CCB header. - This header is copied back by the script processor. This - guarantees that the header is entirely copied back over - the PCI when the CPU completes a CCB. - - (re)read ISTAT prior to scanning CCBs for completion. This - ensure that any posted buffer are flushed prior CCBs scan. - - Support for BIG ENDIAN cpu. Added by Cort <cort@cs.nmt.edu>. - Initial patch did'nt support disconnections and tagged commands. - I've completed the patch and it seems that all is ok now. - Only some powerpc under 2.1.X is supported for the moment. - - Misc. trivial fixes and cleanups. - -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 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. - The changes add support for the 53c860 and 53c875, - but without taking advantage of the new features. - Those chips are used exactly as the old 53c810. - -Sun Jul 21 00:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, README.ncr53c8xx - Add the ncr53c8xx_select_queue_depths() function. - Set queue_depth to SCSI_NCR_MAX_TAGS (4 by default) for devices that - support tagged command queueing. - For other devices, set queue_depth to 1. No need to queue a command - to the driver if this command cannot be sent to the device. - Each time the driver hide io requests from the kernel and/or from the - driver, it may break a little (or a lot) optimization algorithms that - try to increase throughput by reordering io requests. - It is better to enable the disk write caching to reduce latencies for - write operations, and to trust asynchronous read ahead from the device - and from the kernel that can reduce latencies for read operations, - even when tagged command queuing is not supported or enabled. - -Sat Jul 20 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Minor changes: - - Problem of "CCB address mismatch" that happens with the 3 versions - of the driver. The CCB is correct and Stefan Esser suggests a little - patch that seems to be a bypass. - Stefan says he will change that in a future version of the BSD driver. - - Set burst transfers to 8 for 815 chips. - -Sun Jul 14 15:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, Configure.help - Memory mapped io donnot work under linux/Alpha for the driver. - For the moment it is better to not support this feature for this - architecture. - -Tue Jul 09 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Garbage printed out with the following command (fixed): - - cat <some proc scsi device> /proc/scsi/ncr53c8xx/0 - -Sun Jul 07 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Tagged command queueing cannot be disabled at run time. - I probably never try that because I felt the risk. - Shortest patch sent to Linus. I have to plan something better. - -Wed Jul 03 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - Release 1.12a - Tested linux releases: 1.2.13, 2.0.0, 2.0.1 - -Mon Jul 01 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - ncr53c8xx.h, ncr53c8xx.c - Add "clearprof" user command that clear the profile counters. - Automatically clear profile counters when num_kbytes=1000000000 - in order to avoid ugly overflow. - Donnot compile user command code and profile data with 1.2.13. - -Wed Jun 29 20:38 1996 Gerard Roudier (groudier@club-internet.fr) - Matthew Geier reported to me a weird problem of unexpected - disconnection while asynchronous negotiation. - The message sent by the driver is 1-3-1-ff-00. I sent a patch to - Matthew that change the message to 1-3-1-00-00. - The sync msgout was correct however some devices might be to happy - with ff. - -Wed Jun 26 22:57 1996 Gerard Roudier (groudier@club-internet.fr) - Patch no 4 sent to Harald. - The drived used "wtime" for timeouts adn time measurements. - I change for jiffies. - Work with my P133. - -Mon Jun 24 23:05 1996 Gerard Roudier (groudier@club-internet.fr) - Patch no 3 sent to Harald. - -Sun Jun 23 22:29 1996 Gerard Roudier (groudier@club-internet.fr) - Patch no 2 sent to Harald. - I think that the driver have some chance to work. - -Sun Jun 23 15:00 1996 Gerard Roudier (groudier@club-internet.fr) - Harald Koenig is interested in the adaptation of the driver to - Linux/Alpha. - I have prepared a patch and sent it to Harald. - -Sun Jun 16 19:00 1996 Gerard Roudier (groudier@club-internet.fr) - Release 1.11 - Tested linux releases: 1.2.13, 2.0.0 - -Sat Jun 15 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h, Configure.help, scsi/Config.in - Add CONFIG_SCSI_NCR53C8XX_IOMAPPED config option. - Prepare the 2.0.0 with the new version of the driver. - -Wed Jun 12 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - Rewrite the README file. - Add some documentations of the proc file system support. - -Sun Jun 9 18:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Add proc filesystem support of the driver. - Read operations returns profile information. - Write operations send control commands to the host adapter driver. - -Wed Jun 5 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - Change xfer direction for SCAN command to write. - Was bogus. - -Tue May 30 18:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Set the DMA FIFO to 88 for 825A and 875 boards. - The previous value of 536 is bogus since the script only read 7 - bits for the fifo size (thanks to Stefan). - -Mon May 27 18:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Correct the xfer direction guessing for scanner SCAN command (write). - -Mon May 27 18:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Add the following config options: - SCSI_NCR_DISABLE_MPARITY_CHECK : disable master parity checking. - SCSI_NCR_DISABLE_PARITY_CHECK : disable scsi parity checking. - SCSI_NCR_FORCE_SYNC_NEGO : force sync nego for all scsi 2 devices. - -Sat May 25 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - Release 1.10 - Tested linux releases: 1.2.13, 1.3.45, 1.3.71, 1.3.90, 1.3.100 - 1.99.6, 1.99.7 - Switch between Drew's driver and Bsd driver tested for 1.99.7. - Both driver was made as modules. - -Sat May 25 16:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Some weird problems happen with multi-lun configurations and HDs. - SDTR seems to be sent with TEST UNIT READY of lun 1. - Tagged Queue cannot be enabled. It seems that inqdata are - filled with garbage probably due to some INQUIRY command to - lun 1. - I have fixed the problem as follow: - - negotiation are initiated only with a command to lun 0. - - inquiry data are store only for lun 0. - -Wed May 22 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h - Have prepared the patch that allow to install the driver in the - kernel tree, without moving Drew's one. - Seems to work. However, I have to check that nothing has been - broken for 1.2.13 and 1.3.45 to 1.3.100. - -Sun May 4 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h - Adapt the source to some modifications of the linux tree of 1.3.98. - (include/linux/scsicam.h moved to include/scsi/scsicam.h) - -Thu Apr 25 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h, ncr53c8xx.c - Release 1.9 - Prepare conditionnal compilations for the future Linux version(s). - Assume that these versions will be nicely compatible with current - one. - 1.3.255, 1.4.0 or 2.0.0 ? - I suggest 3.0.0 for some obvious reason. - -Wed Apr 24 23:15 1996 Gerard Roudier (groudier@club-internet.fr) - * Install.ncr53c8xx - Add Patch-Current.ncr53c8xx to the distribution. - This patch is applied to the scsi Makefile at installation time for - Linux release V.P.S (V*1000000000+P*100000000+S > 1300000094). - Each time it'll be necessary I will send the patch corresponding to - the current Linux release to the linux-scsi@vger.rutgers.edu. - -Sun Apr 21 19:00 1996 Gerard Roudier (groudier@club-internet.fr) - * README.ncr53c8xx - Update Bonnie results of linux-1.3.92 + prepatch read-ahead 1.3.93. - Results are so good that I must remove FreeBSD-2.0.5 results from the - README file, otherwise I should cause trouble for myself. - -Sun Apr 07 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h - Define SCSI_NCR_MAX_LUN (8) inconditionaly. - Previous releases did not work for multi-lun devices. - This definition was wrongly conditionned: - (SCSI_CONFIG_MULTI_LUN instead of CONFIG_SCSI_MULTI_LUN). - No luck, since I donnot have multi-lun devices and could'nt - test it. - Some tests under linux-1.3.84 with an experimental patch that - try to do asynchronous read-ahead. - -Wed Apr 03 23:15 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h, ncr53c8xx.c - Change some wrong "assert (target == cmd->target & 7)" to - "assert (target == (cmd->target & 0xf)". - Remove NCR_TIMEOUT_ALERT from ncr53c8xx.c - Add SCSI_NCR_TIMEOUT_ALERT to ncr53c8xx.h - -Sun Mar 24 21:15 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h - During "make dep" of linux-1.2.13, LINUX_VERSION_CODE is undefined. - Have to assume 1.2.13 in such situation. - Release 1.8 - -Sun Mar 24 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * README.ncr53c8xx - Make changes according to the new uninstallation procedure. - -Sun Mar 24 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - * Uninstall.ncr53c8xx - Add an uninstallation script to the distribution. - This shell script restore the standard driver. - Very usefull for people who prefers to use a driver that - does not support: - - Master parity check - - Tagged command queuing - - Fast Wide Scsi-2 features (up to 20 MB/sec) - and that would be capable to reject a Wide Negotiation that it had - previously initiated. - -Sat Mar 23 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * README.ncr53c8xx - Make changes according to the new installation procedure. - -Fri Mar 22 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * Install.ncr53c8xx - Add an installation script to the distribution. - 3 differents patches are necessary: - - linux-1.2.13 - - linux-1.3.45 to linux-1.3.49 - - linux-1.3.50 to linux-1.3.77 - -Wed Mar 13 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h - Add share irq support. - This facility appears with linux-1.3.70. It seems that the - corresponding code of the kernel was questionnable before 1.3.72. - I decide to support this options from linux-1.3.72 and above. - (Add define option SCSI_NCR_SHARE_IRQ) - Release 1.7 - -Tue Mar 12 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Download BSD ncr.c 1.67 and apply the correction of negotiations order. - Now the Wide and Sync negotiation are done in the proper order. - (Problem reported by Johannes Plass). - Round up correctly the announced speed in MB/sec. - -Tue Mar 05 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * README.ncr53c8xx - Have to upload release 1.6 for users of linux-1.3.70-71 - -Mon Mar 04 16:00 1996 Gerard Roudier (groudier@club-internet.fr) - * README.ncr53c8xx - Add some Bonnie results to the README file. - -Sun Mar 03 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Make changes for linux-1.3.70 according to the new specification of - irq services interface (request_irq(), free_irq()). - With 26 letters, "_", and 10 digits we can build about: - 53x62**9 C names of 10 characters. - Why to use SAME function names with DIFFERENT parameters ? - -Sat Mar 02 22:30 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Using SIMPLE QUEUE TAG for all operations is good for performances, - but may be bad for assumed timeout values. - Under heavy disk load (Bonnie), the drive may start IO process of a - command, then disconnect, then execute lots of other commands - before completing the interrupted command. - The standard value of SD_TIMEOUT (6 sec or 7 sec) seems (is) too short. - I fix the problem by forcing an ORDERED QUEUE TAG for the next - command when I found some "old" pending command. - "Old" means that they might be timeouted in a few seconds. - Add NCR_TIMEOUT_ALERT and set it to 3 seconds. - -Fri Mar 01 22:30 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h, ncr53c8xx.c - Add define SCSI_NCR_SEGMENT_SIZE and set it by default to 512. - If undefined, the driver use the scatter list given by the upper - scsi driver, else it tries to split segments into shorter one - according to the value of SCSI_NCR_SEGMENT_SIZE. - -Tue Feb 27 21:30 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h - Set sg_tablesize to 127 = SCSI_NCR_MAX_SCATTER-1. - (was 64 = SCSI_NCR_MAX_SCATTER/2). - May increase the speed (about 20%) for linear read/write operations. - Bonnie results may be better, but I prefered the previous - value. - -Tue Feb 27 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr54c8xx.c, ncr53c8xx.h - Tagged command queueing seems to affect linux-1.3.XY kernels. - I decide to disable tagged queue by default and to provide a command - tool to enable it per device after boot-up. - Add scsitag.c to the distribution. - Usage: scsitag device - Examples: scsitag /dev/sda - scsitag /dev/sdb - -Sun Feb 25 14:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h - Add INQ7_Default definition and set the target capabilities to this - value by default. - Add some code to reject a synchronous negotiation request from a target - that is defined as not capable of Sync in the table of capabilities. - -Sat Feb 24 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Add some code to fill some write-only host instance fields: - - base - - io_port - - n_io_port - - dma_channel - This fields may be used with some "standard" drivers that do not - process correctly the release function. - -Fri Feb 23 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - I receive a mail from Jason Duerstock. - A new bug in ncrBsd2Linux which is probably outside the driver code - and inside Linux kernel code. - The kernel memory is quite corrupted and we cannot get any information - by looking into the messages about the crash. However Linus see a bug in - ncrBsd2Linux because it is a "non standard" driver. - I think too that ncrBsd2Linux is not a standard driver of Linux kernel, - because it has no bugs enough to become standard for Linux. - Drew's driver is quite standard. - -Wed Feb 21 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h - I incorporate the differences between FreeBSD ncr.c revision 1.62 and - revision 1.64. - - Some cosmetic changes. - - Use M_SIMPLE_TAG by default (even for write operations). - I seems to me that SIMPLE TAG is safe only if the flag "queue - algorithm modifier" is set to zero. - I will ask some questions to Stefan Esser about this. - Add option SCSI_NCR_ALWAYS_SIMPLE_TAG in ncr53c8xx.h. - -Fri Feb 16 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - I have found the bug. It is a recursion in __get_free_pages(). - I will send a mail to Linus about this. - -Sat Feb 10 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - I am sure that the kernel stack overflow is due to a severe bug in - the Linux kernel. - I decide to try to find the bug by myself. - -Fri Feb 09 20:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h - Limit commands per lun to 2 for linux-1.3.XY. - The patch-1.3.60 does not correct the kernel stack overflow problem. - I decide to make some tests with Drew's driver and Bsd2Linux with same - working conditions (3 commands per lun, FAST SCSI, no command queueing). - I get the stack overflow problem with the 2 drivers at the same - frequency. - With only 2 commands per lun, I dont have the problem with any driver. - It seems that the madness of recursion and the recent introduction of - the silly generic read function have broken performance and reliability - of scsi drivers. - -Thu Feb 08 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr_attach() - Release memory mapped region and io port if initialisation - does not succeed. - -Thu Feb 08 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.c - Try to spare some CPU time in queue_command() function and interrupt - handler: - Add SCSI_NCR_PARANOIA define option in ncr53c8xx.h. - Add SCSI_NCR_PROFILE define option in ncr53c8xx.h. - Avoid useless code and function calls. - -Tue Feb 06 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h, ncr_timeout() - Add SCSI_NCR_BROKEN_INTR define option in ncr53c8xx.h. - If this option is set, the timeout handler polls the interrupt status - register every tick (10 ms). So, boards with broken interrupt can work. - -Mon Feb 05 21:30 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Print the correct speed, for devices with successfull wide negotiation. - For same period, such devices are two times faster then narrow ones. - -Mon Feb 05 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.h, ncr53c8xx.c, ncr_attach() - Add define SCSI_NCR_SETTLE_TIME in header file and set it by default - to 2 seconds. - -Sat Jan 27 14:00 1996 Gerard Roudier (groudier@club-internet.fr) - Upload release 1.3 - -Wed Jan 24 24:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Update from ncr Bsd 1.60 (Stefan Esser): - The handshake timeout is disabled, since - a few devices will delay ACK for more than a - second: Scanner, CDROM writer and a few old hard - disk drives. - -Wed Jan 24 22:30 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Set the selection timeout to 0.4 sec, since 0.25 sec - is recommended for scsi-1 devices. - Note that the Bsd ncr driver sets this timeout to 0.1 sec - and the linux standard ncr driver sets it to 0.8 sec. - -Wed Jan 24 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Add a 5 seconds delay after chip initialization, - waiting for scsi devices to settle their stomach, - as FreeBSD generic scsi driver does. - -Tue Jan 23 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Set burst length value according to chip type. - The original Bsd ncr driver sets burst length to 16 for - all chip types. - -Tue Jan 16 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c, ncr53c8xx.h - Add comments to linux specific glue code. - -Mon Jan 15 22:00 1996 Gerard Roudier (groudier@club-internet.fr) - io mapped versus memory mapped. - * ncr53c8xx.c - Add some code to dynamicaly switch to io mapped if memory mapped - does not work. - No more need to reconfigure, compile and link the kernel if - memory mapped is not possible. - -Sun Jan 14 18:00 1996 Gerard Roudier (groudier@club-internet.fr) - Patch sent to ncr mailing list by Jason Duerstock - <jduersto@kendall.mdcc.edu> - I have omitted to provide the proc_dir_entry to the middle - scsi driver. - * ncr53c8xxx.c - Add the declaration of the ncr53c8xx proc_dir_entry and return - the pointer to middle scsi driver. - -Sat Jan 13 01:00 1996 Gerard Roudier (groudier@club-internet.fr) - ncrBsd2Linux 1.1 is ready. - Upload to sunsite immediatly. - -Fri Jan 12 23:45 1996 Gerard Roudier (groudier@club-internet.fr) - It seems that scsi-2 devices too may cause problems because they - have flawes in the firmware. - * ncr53c8xx.h - I add a table of capabilities per target. - This table contains one byte per target. The value of this byte - is anded with byte 7 of INQUIRY data. - Edit ncr53c8xx.h and read the corresponding comments for more - details. - -Wed Jan 10 22:35 1996 Gerard Roudier (groudier@club-internet.fr) - I have some time to read the scsi-1 specifications. - Some very old scsi devices may cause problems with the ncr Bsd driver - for the following raisons: - The Synchronous Negotiation protocol was optional. - The standardized INQUIRY data does not include the byte 7 of - the scsi-2 specifications which contains the capabilities of - the device. - I think that negotiation with such devices are very questionnable. - * ncr53c8xx.c - ncrBsd2Linux 1.1 does not negotiate with scsi-1 devices. - -Sat Jan 06 21:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c function ncr_attach() - Disable chip interrupt before soft reset in attach procedure. - When loadlin is used to boot the system, the state of the NCR chip - is unpredicable. This modification avoid unexpected interrupts. - -Thu Jan 04 23:45 1996 Gerard Roudier (groudier@club-internet.fr) - ncrBsd2Linux 1.0 is ready. - Upload to sunsite immediatly. - -Tue Jan 02 23:00 1996 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Add a waiting list for Scsi Commands than can be inserted - into the start queue immediatly. - When a command complete, the waiting commands are requeued by calling - the queuecommand() function. - -Sun Dec 31 23:59 1995 Gerard Roudier (groudier@club-internet.fr) - * ncr53c8xx.c - Use kmalloc()/kfree() for internal data structures allocation to - avoid scsi memory pool shortage. - -Sat Dec 30 23:00 1995 Gerard Roudier (groudier@club-internet.fr) - ncrBsd2Linux can now use memory mapped IO. - Works fine. - * ncr53c8xx.c - Call vremap() from ncr_attach() to map the physical page which - contains the memory IO window. - Call vfree() from ncr_detach() (release module). - -Fri Dec 29 23:45 1995 Gerard Roudier (groudier@club-internet.fr) - ncrBsd2Linux can now be configured as a module. - Works fine. - * ncr53c8xx.c: add new functions ncr53c8xx_release() and ncr_detach() - Add the code to (per host): - Stop the timer. - Stop the chip. - Free allocated memory. - -Fri Dec 29 23:00 1995 Gerard Roudier (groudier@club-internet.fr) - Problem: detection routine returns 0 and can detect only one host. - * ncr53c8xx.c function ncr_attach() - ncr_attach() now returns 0 on success and -1 on error. - ncr53c8xx_detect() returns the number of detected hosts. - -Thu Dec 28 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - I must upload the new version which corrects the severe problem with - WRITE_10 command. - Release 0.5 - Known or probable problems with this ncr driver release: - -------------------------------------------------------- - Same as the previous release. - -Wed Dec 27 23:00 1995 Gerard Roudier (groudier@club-internet.fr) - Problem: - System CRASH or scsi ERROR "extra data disgarded" on WRITE(10) - command. - * ncr53c8xx.c function guess_xfer_direction() - I add the WRITE(10) (0x2A) into the list of Data Out scsi commands. - It was a big mistake. - This BUG was introduced in the release 0.3 and is obvious present in - the release 0.4. - -Wed Dec 27 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - Problem: - When I was testing tagged command queueing and disconnections - with one hard disk at a time (IBM S12), the script process hung - every 5 minutes with a non empty stall queue. - * ncr53c8xx.c function ncr_exception() - I replace "OUTB (nc_istat, INTF)" by - "OUTB (nc_istat, (istat & SIGP) | INTF)". - This statement cleared the INTF condition, but cleared the SIGP flag too. - (This bug is in the original FreeBSD ncr driver). - -Mon Dec 25 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - Release 0.4 - Known or probable problems with this ncr driver release: - -------------------------------------------------------- - Hardware (or software) conflicts with some ethernet cards. - See release 0.2 above. - Crash with Intel saturn chipset with write-back cache enabled. - The SCSI SCRIPT access the internal registers of - the NCR chip by memory addressing. - Ensure that the memory area of the NCR chip is not cacheable. - Use scanpci to get the base memory address of the ncr chip. - The 128 bytes following this address must not be cached. - -Sat Dec 23 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - Problem: - FreeBSD driver important comments - --------------------------------- - We try to reduce the number of interrupts caused - by unexpected phase changes due to disconnects. - A typical harddisk may disconnect before ANY block. - If we wanted to avoid unexpected phase changes at all - we had to use a break point every 512 bytes. - Of course the number of scatter/gather blocks is - limited. - * ncr53c8xx.c function ncr_scatter() - This function has been rewritten according to the above comments. - The Linux scatter list is scanned, and blocks are broken as possible - into 512 bytes chunks. - -Wed Dec 22 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - Problem: ensure that there are enough allocated Command Control Blocks - for each unit to enqueue commands according to cmd_per_lun. - * ncr53c8xx.c function ncr_allocate_ccb() - Allocate all required ccb(s) instead of one at a time. - -Mon Dec 18 23:00 1995 Gerard Roudier (groudier@club-internet.fr) - Problem: A copy of the system time is used to compute timeouts. - When the system time is changed , we can get spurious timeouts - if scsi commands are pending. - * ncr53c8xx.c function ncr_timeout() - In FreeBSD the kernel time (volatile struct timeval time) is not - affected by settimeofday() or other change time functions. - For Linux, I replace "time" by "xtime". But "xtime" is the system time, - and is affected by change time functions. - If we detect a change <=-1s or >1s we assume system time has been changed. - For all active ccb(s), we recompute tlimit. - We set heartbeat to thistime to prevent spurious chip reset. - -Sun Dec 17 23:00 1995 Gerard Roudier (groudier@club-internet.fr) - Release 0.3. - -Sun Dec 17 11:00 1995 Gerard Roudier (groudier@club-internet.fr) - - Problem: Linux middle-level scsi driver does not provide the - direction of transfert in scsi command parameters. - FreeBSD ncr driver need this information to patch the SCSI script - for SAVE DATA POINTER and to check actual data transfer direction. - * ncr53c8xx.c - I add the function guess_xfer_direction(int opcode) which try to - guess the transfer direction. - Unfortunately my documentation about SCSI-II standard is very old. - It does not contain PHOTO-CD command specifications. - I assume input transfer direction, for unknown command. (not perfect) - -Wed Dec 15 23:00 1995 Gerard Roudier (groudier@club-internet.fr) - - It's time to schedule the release 0.2 - Known or probable problems with this ncr driver release: - -------------------------------------------------------- - Scsi tapes do not work. - scsi-config-1.5 does not work too. - Hardware (or software) conflicts with some ethernet cards. - The linux native ncr53c810 scsi driver does'not use memory - mapped IO at all. - The BSD driver can use memory mapped IO. - Under Linux, i seems to be difficult (or impossible) to map - a PCI memory area. So I decide to use normal IO in the code of - the ported driver. - However, the SCSI SCRIPT access the internal registers of - the NCR chip by memory addressing. - EThernet cards use a memory area to communicate with the system. - I think that this memory area conflicts with the memory area - used by the NCR chip. - The configuration diskette of your ethernet card can help you - to fix the problem (try sofware configurations). - -Wed Dec 15 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - - Problem: detection of CD change did not work. - * ncr53c8xx.c - Signal a CHECK_CONDITION (S_CHECK_COND) to the middle-level - scsi drivers when the scsi completion status = S_SENSE|S_GOOD. - - Problem: System hang with status <4/82> after mounting the root - partition. System disk is a QUANTUM EMPIRE 1080 S. - Submitted by rwilhelm@Physik.TU-Muenchen.DE (Robert Wilhelm) - Thu, 14 Dec 1995 10:18:43 +0100 (MET) - * ncr53c8xx.c - Signal a CHECK_CONDITION (S_CHECK_COND) to the middle-level - scsi drivers when the scsi completion status = S_SENSE|S_CHECK_COND. - (HS_COMPLETE=4, S_SENSE|S_CHECK_COND=x82). - I can't test this fix. I think that it should work. - -Thu Dec 14 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - - Problem submitted by Bill Dyess <Bill@Dyess.com> Tue 12 Dec 1995 - Only one lun detected on a Pioneer DRM-602X 6-disk CD-ROM changer. - * ncr53c8xx.h, ncr53c8xx.c - Define NCR_SCSI_MAX_LUN to 8 if the Linux configuration flag - SCSI_CONFIG_MULTI_LUN is set. - My CD device has only one lun. I can't test multi-lun device, - but I think that it should work. - - * ncr53c8xx.c - Write the ncr_abort_command() and ncr_reset_command() functions. - I intend to test these functions next week. - -Sun Dec 10 22:00 1995 Gerard Roudier (groudier@club-internet.fr) - * Release 0.1 - Works fine with hard disks under Linux 1.2.13 and Linux 1.3.45. |