[Linux-kernel-mentees] [PATCH] Documentation: Changed .txt file to .rst

Mauro Carvalho Chehab mchehab at kernel.org
Fri Jun 28 18:28:56 UTC 2019


Em Fri, 28 Jun 2019 11:28:01 -0600
Shuah Khan <skhan at linuxfoundation.org> escreveu:

> On 6/28/19 11:09 AM, Mauro Carvalho Chehab wrote:
> > Em Fri, 28 Jun 2019 10:03:50 -0600
> > Shuah Khan <skhan at linuxfoundation.org> escreveu:
> >   
> >> On 6/28/19 9:48 AM, Sushma Unnibhavi wrote:  
> >>> Signed-off-by: Sushma Unnibhavi <sushmaunnibhavi425 at gmail.com>
> >>> ---  
> >>
> >> Commit log is missing. Please check the project page for FAQ.
> >> Follow the tips to avoid duplication of effort.
> >>
> >> Please make sure you cc everybody get_maintainers.pl suggests.
> >>
> >> https://wiki.linuxfoundation.org/lkmp#frequently_answered_questions_and_tips
> >>
> >> I am adding Mauro and Jon Corbet for their feedback on this file.
> >> Somebody else is working on scsi documentation.  
> > 
> > Hi Shuah,
> > 
> > The patch is missing!
> > 
> >   
> 
> Sorry. Aggressive trimming on my part! Here is the patch. Sorry
> about that.
> 
> Sushma! Please include the file you are converting in the commit
> header.
> 
> "Documentation: Changed .txt file to .rst" doesn't give enough
> context.
> 
> 
> On 6/28/19 9:48 AM, Sushma Unnibhavi wrote:> Signed-off-by: Sushma 
> Unnibhavi <sushmaunnibhavi425 at gmail.com>
>  > ---
>  >   Documentation/scsi/aha152x.rst | 190 +++++++++++++++++++++++++++++++++
>  >   Documentation/scsi/aha152x.txt | 183 -------------------------------
>  >   2 files changed, 190 insertions(+), 183 deletions(-)
>  >   create mode 100644 Documentation/scsi/aha152x.rst
>  >   delete mode 100644 Documentation/scsi/aha152x.txt
>  >  
> 
> 
>  > diff --git a/Documentation/scsi/aha152x.rst   
> b/Documentation/scsi/aha152x.rst
>  > new file mode 100644
>  > index 000000000000..b3646a5948d9
>  > --- /dev/null

Please generate the diff with -M1. This will make it show exactly what
changed. Without that, reviewing the patch is a way harder :-)

>  > +++ b/Documentation/scsi/aha152x.rst
>  > @@ -0,0 +1,190 @@
>  > +$Id: README.aha152x,v 1.2 1999/12/25 15:32:30 fischer Exp fischer $

Just get rid of this line. We don't need/want CVS tags.

>  > +Adaptec AHA-1520/1522 SCSI driver for Linux (aha152x)

The title should use the proper markup, e. g. something like

=====================================================
Adaptec AHA-1520/1522 SCSI driver for Linux (aha152x)
=====================================================

>  > +
>  > +Copyright 1993-1999 Jürgen Fischer <fischer at norbit.de>
>  > +TC1550 patches by Luuk van Dijk (ldz at xs4all.nl)
>  > +
>  > +
>  > +In Revision 2 the driver was modified a lot (especially the
>  > +bottom-half handler complete()).
>  > +
>  > +The driver is much cleaner now, has support for the  new
>  > +error handling code in 2.3, produced less cpu load (much
>  > +less polling loops), has slightly higher throughput  (at
>  > +least on my ancient test box; a i486/33Mhz/20MB).
>  > +
>  > +
>  > +CONFIGURATION ARGUMENTS:
>  >   
> +--------------------------------------------------------------------------------
>  > +|IOPORT     |   base io address                        |   
> (0x340/0x140)         |
>  >   
> +--------------------------------------------------------------------------------
>  > +|IRQ        |  interrupt level                         | (9-12;   
> default 11)    |
>  >   
> +--------------------------------------------------------------------------------
>  > +|SCSI_ID    |  scsi id of controller                   | (0-7;   
> default 7)      |
>  >   
> +--------------------------------------------------------------------------------
>  > +|RECONNECT  |  allow targets to disconnect from the bus| (0/1;   
> default 1 [on]) |
>  >   
> +--------------------------------------------------------------------------------
>  > +|PARITY     |  enable parity checking                  | (0/1;   
> default 1 [on]) |
>  >   
> +--------------------------------------------------------------------------------
>  > +|SYNCHRONOUS|  enable synchronous transfers            | (0/1;   
> default 1 [on]) |
>  >   
> +--------------------------------------------------------------------------------
>  > +|DELAY:     |  bus reset delay                         | (default   
> 100)         |
>  >   
> +--------------------------------------------------------------------------------
>  > +|EXT_TRANS: |  enable extended translation             | (0/1:   
> default 0 [off])|
>  > +|           |  (see NOTES)                             |   
>            |
>  >   
> +--------------------------------------------------------------------------------
>  > +COMPILE TIME CONFIGURATION (go into AHA152X in drivers/scsi/Makefile):
>  > +
>  > +-DAUTOCONF
>  > + use configuration the controller reports (AHA-152x only)
>  > +
>  > +-DSKIP_BIOSTEST
>  > + Don't test for BIOS signature (AHA-1510 or disabled BIOS)
>  > +
>  > +-DSETUP0="{ IOPORT, IRQ, SCSI_ID, RECONNECT, PARITY, SYNCHRONOUS,   
> DELAY, EXT_TRANS }"
>  > + override for the first controller
>  > +
>  > +-DSETUP1="{ IOPORT, IRQ, SCSI_ID, RECONNECT, PARITY, SYNCHRONOUS,   
> DELAY, EXT_TRANS }"
>  > + override for the second controller
>  > +
>  > +-DAHA152X_DEBUG
>  > + enable debugging output
>  > +
>  > +-DAHA152X_STAT
>  > + enable some statistics
>  > +
>  > +
>  > +LILO COMMAND LINE OPTIONS:
>  > +
>  >   
> +aha152x=<IOPORT>[,<IRQ>[,<SCSI-ID>[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY> 
> [,<EXT_TRANS]]]]]]]
>  > +
>  > +The normal configuration can be overridden by specifying a command
>  > +line.When you do this, the  BIOS  test  is skipped. Entered values
>  > +have to be valid (known).  Don't use values that  aren't supported
>  > +under normal operation.  If  you think that you need other values:
>  > +contact me. For two controllers  use  the aha152x statement twice.
>  > +
>  > +
>  > +SYMBOLS FOR MODULE CONFIGURATION:
>  > +
>  > +Choose from 2 alternatives:
>  > +
>  > +1. specify everything (old)
>  > +
>  > +   
> aha152x=IOPORT,IRQ,SCSI_ID,RECONNECT,PARITY,SYNCHRONOUS,DELAY,EXT_TRANS
>  > +   configuration override for first controller
>  > +
>  > +
>  > +   
> aha152x1=IOPORT,IRQ,SCSI_ID,RECONNECT,PARITY,SYNCHRONOUS,DELAY,EXT_TRANS
>  > +   configuration override for second controller
>  > +
>  > +2. specify only what you need to (irq or io is required; new)
>  > +
>  > +   io=IOPORT0[,IOPORT1]
>  > +   IOPORT for first and second controller
>  > +
>  > +   irq=IRQ0[,IRQ1]
>  > +   IRQ for first and second controller
>  > +
>  > +   scsiid=SCSIID0[,SCSIID1]
>  > +   SCSIID for first and second controller
>  > +
>  > +   reconnect=RECONNECT0[,RECONNECT1]
>  > +   allow targets to disconnect for first and second controller
>  > +
>  > +   parity=PAR0[PAR1]
>  > +   use parity for first and second controller
>  > +
>  > +   sync=SYNCHRONOUS0[,SYNCHRONOUS1]
>  > +   enable synchronous transfers for first and second controller
>  > +
>  > +   delay=DELAY0[,DELAY1]
>  > +   reset DELAY for first and second controller
>  > +
>  > +   exttrans=EXTTRANS0[,EXTTRANS1]
>  > +   enable extended translation for first and second controller
>  > +
>  > +
>  > +If you use both alternatives the first will be taken.
>  > +
>  > +
>  > +NOTES ON EXT_TRANS:
>  > +
>  > +SCSI uses block numbers to address blocks/sectors on a device.
>  > +The BIOS uses a cylinder/head/sector addressing scheme (C/H/S)
>  > +scheme instead.  DOS expects a BIOS or driver that understands
>  > +this C/H/S addressing.
>  > +
>  > +The number of cylinders/heads/sectors is called geometry and is
>  > +required as base for requests in  C/H/S  addressing.  SCSI only
>  > +knows about the total capacity  of  disks  in blocks (sectors).
>  > +
>  > +Therefore the SCSI BIOS/DOS driver has to calculate a logical/virtual
>  > +geometry just  to  be  able  to  support  that addressing scheme. The
>  > +geometry returned by the SCSI BIOS is  a  pure  calculation  and  has
>  > +nothing to do with the  real/physical  geometry  of  the  disk (which
>  > +is usually irrelevant anyway).
>  > +
>  > +Basically this has no impact at all on Linux, because it also  uses   
> block
>  > +instead of C/H/S addressing.  Unfortunately C/H/S addressing is also   
> used
>  > +in the partition table and therefore every operating  system  has to   
> know
>  > +the right geometry to be able to interpret it.
>  > +
>  > +Moreover there are certain limitations to the  C/H/S  addressing scheme,
>  > +namely the address space is limited to up to 255 heads, up to 63 sectors
>  > +and a maximum of 1023 cylinders.
>  > +
>  > +The AHA-1522 BIOS calculates the geometry by fixing the number of heads
>  > +to 64, the number of sectors to  32  and  by  calculating the number of
>  > +cylinders by dividing the capacity reported by the disk by 64*32 (1 MB).
>  > +This is considered to be the default translation.
>  > +
>  > +With respect to the limit of 1023 cylinders using C/H/S you can only
>  > +address the first GB of your disk in the partition table.  Therefore
>  > +BIOSes of some  newer controllers based on the AIC-6260/6360 support
>  > +extended  translation.  This means that the BIOS uses 255 for heads,
>  > +63 for  sectors  and then divides the capacity of the disk by 255*63
>  > +(about 8 MB), as soon it sees a disk greater than 1 GB. That results
>  > +in a maximum of about 8 GB addressable  diskspace  in the  partition
>  > +table (but there are already bigger disks out there today).
>  > +
>  > +To make it even more complicated the translation mode might/might
>  > +not be configurable in certain BIOS setups.
>  > +
>  > +This driver does some more or less failsafe guessing to get the
>  > +geometry right in most cases:
>  > +
>  > +- for disks<1GB:
>  > +  -use default translation (C/32/64)
>  > +
>  > +- for disks>1GB:
>  > +  - take current geometry from the partition table (using   
> scsicam_bios_param
>  > +    and accept only `valid' geometries, ie. either (C/32/64) or   
> (C/63/255)).
>  > +	This can be extended translation even if it's not enabled in the   
> driver.
>  > +
>  > +  - if that fails, take extended translation if  enabled  by override,
>  > +    kernel or module parameter, otherwise take default translation and
>  > +    ask the user for verification.  This might on  not yet partitioned
>  > +    disks.
>  > +
>  > +
>  > +REFERENCES USED:
>  > +
>  > + "AIC-6260 SCSI Chip Specification", Adaptec Corporation.
>  > +
>  > + "SCSI COMPUTER SYSTEM INTERFACE - 2 (SCSI-2)", X3T9.2/86-109 rev. 10h
>  > +
>  > + "Writing a SCSI device driver for Linux", Rik Faith (faith at cs.unc.edu)
>  > +
>  > + "Kernel Hacker's Guide", Michael K. Johnson (johnsonm at sunsite.unc.edu)
>  > +
>  > + "Adaptec 1520/1522 User's Guide", Adaptec Corporation.
>  > +
>  > + Michael K. Johnson (johnsonm at sunsite.unc.edu)
>  > +
>  > + Drew Eckhardt (drew at cs.colorado.edu)
>  > +
>  > + Eric Youngdale (eric at andante.org)
>  > +
>  > + special thanks to Eric Youngdale for the free(!) supplying the
>  > + documentation on the chip.
>  > diff --git a/Documentation/scsi/aha152x.txt   
> b/Documentation/scsi/aha152x.txt
>  > deleted file mode 100644
>  > index 94848734ac66..000000000000
>  > --- a/Documentation/scsi/aha152x.txt
>  > +++ /dev/null
>  > @@ -1,183 +0,0 @@
>  > -$Id: README.aha152x,v 1.2 1999/12/25 15:32:30 fischer Exp fischer $
>  > -Adaptec AHA-1520/1522 SCSI driver for Linux (aha152x)
>  > -
>  > -Copyright 1993-1999 Jürgen Fischer <fischer at norbit.de>
>  > -TC1550 patches by Luuk van Dijk (ldz at xs4all.nl)
>  > -
>  > -
>  > -In Revision 2 the driver was modified a lot (especially the
>  > -bottom-half handler complete()).
>  > -
>  > -The driver is much cleaner now, has support for the new
>  > -error handling code in 2.3, produced less cpu load (much
>  > -less polling loops), has slightly higher throughput (at
>  > -least on my ancient test box; a i486/33Mhz/20MB).
>  > -
>  > -
>  > -CONFIGURATION ARGUMENTS:
>  > -
>  > -IOPORT        base io address                           (0x340/0x140)
>  > -IRQ           interrupt level                           (9-12;   
> default 11)
>  > -SCSI_ID       scsi id of controller                     (0-7; default 7)
>  > -RECONNECT     allow targets to disconnect from the bus  (0/1;   
> default 1 [on])
>  > -PARITY        enable parity checking                    (0/1;   
> default 1 [on])
>  > -SYNCHRONOUS   enable synchronous transfers              (0/1;   
> default 1 [on])
>  > -DELAY:        bus reset delay                           (default 100)
>  > -EXT_TRANS:    enable extended translation               (0/1:   
> default 0 [off])
>  > -              (see NOTES)
>  > -
>  > -COMPILE TIME CONFIGURATION (go into AHA152X in drivers/scsi/Makefile):
>  > -
>  > --DAUTOCONF
>  > - use configuration the controller reports (AHA-152x only)
>  > -
>  > --DSKIP_BIOSTEST
>  > - Don't test for BIOS signature (AHA-1510 or disabled BIOS)
>  > -
>  > --DSETUP0="{ IOPORT, IRQ, SCSI_ID, RECONNECT, PARITY, SYNCHRONOUS,   
> DELAY, EXT_TRANS }"
>  > - override for the first controller
>  > -
>  > --DSETUP1="{ IOPORT, IRQ, SCSI_ID, RECONNECT, PARITY, SYNCHRONOUS,   
> DELAY, EXT_TRANS }"
>  > - override for the second controller
>  > -
>  > --DAHA152X_DEBUG
>  > - enable debugging output
>  > -
>  > --DAHA152X_STAT
>  > - enable some statistics
>  > -
>  > -
>  > -LILO COMMAND LINE OPTIONS:
>  > -
>  >   
> -aha152x=<IOPORT>[,<IRQ>[,<SCSI-ID>[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY> 
> [,<EXT_TRANS]]]]]]]
>  > -
>  > - The normal configuration can be overridden by specifying a command   
> line.
>  > - When you do this, the BIOS test is skipped. Entered values have to be
>  > - valid (known).  Don't use values that aren't supported under normal
>  > - operation.  If you think that you need other values: contact me.
>  > - For two controllers use the aha152x statement twice.
>  > -
>  > -
>  > -SYMBOLS FOR MODULE CONFIGURATION:
>  > -
>  > -Choose from 2 alternatives:
>  > -
>  > -1. specify everything (old)
>  > -
>  > -aha152x=IOPORT,IRQ,SCSI_ID,RECONNECT,PARITY,SYNCHRONOUS,DELAY,EXT_TRANS
>  > -  configuration override for first controller
>  > -
>  > -
>  > -aha152x1=IOPORT,IRQ,SCSI_ID,RECONNECT,PARITY,SYNCHRONOUS,DELAY,EXT_TRANS
>  > -  configuration override for second controller
>  > -
>  > -2. specify only what you need to (irq or io is required; new)
>  > -
>  > -io=IOPORT0[,IOPORT1]
>  > -  IOPORT for first and second controller
>  > -
>  > -irq=IRQ0[,IRQ1]
>  > -  IRQ for first and second controller
>  > -
>  > -scsiid=SCSIID0[,SCSIID1]
>  > -  SCSIID for first and second controller
>  > -
>  > -reconnect=RECONNECT0[,RECONNECT1]
>  > -  allow targets to disconnect for first and second controller
>  > -
>  > -parity=PAR0[PAR1]
>  > -  use parity for first and second controller
>  > -
>  > -sync=SYNCHRONOUS0[,SYNCHRONOUS1]
>  > -  enable synchronous transfers for first and second controller
>  > -
>  > -delay=DELAY0[,DELAY1]
>  > -  reset DELAY for first and second controller
>  > -
>  > -exttrans=EXTTRANS0[,EXTTRANS1]
>  > -  enable extended translation for first and second controller
>  > -
>  > -
>  > -If you use both alternatives the first will be taken.
>  > -
>  > -
>  > -NOTES ON EXT_TRANS:
>  > -
>  > -SCSI uses block numbers to address blocks/sectors on a device.
>  > -The BIOS uses a cylinder/head/sector addressing scheme (C/H/S)
>  > -scheme instead.  DOS expects a BIOS or driver that understands this
>  > -C/H/S addressing.
>  > -
>  > -The number of cylinders/heads/sectors is called geometry and is required
>  > -as base for requests in C/H/S addressing.  SCSI only knows about the
>  > -total capacity of disks in blocks (sectors).
>  > -
>  > -Therefore the SCSI BIOS/DOS driver has to calculate a logical/virtual
>  > -geometry just to be able to support that addressing scheme.  The   
> geometry
>  > -returned by the SCSI BIOS is a pure calculation and has nothing to
>  > -do with the real/physical geometry of the disk (which is usually
>  > -irrelevant anyway).
>  > -
>  > -Basically this has no impact at all on Linux, because it also uses block
>  > -instead of C/H/S addressing.  Unfortunately C/H/S addressing is also   
> used
>  > -in the partition table and therefore every operating system has to know
>  > -the right geometry to be able to interpret it.
>  > -
>  > -Moreover there are certain limitations to the C/H/S addressing scheme,
>  > -namely the address space is limited to up to 255 heads, up to 63 sectors
>  > -and a maximum of 1023 cylinders.
>  > -
>  > -The AHA-1522 BIOS calculates the geometry by fixing the number of heads
>  > -to 64, the number of sectors to 32 and by calculating the number of
>  > -cylinders by dividing the capacity reported by the disk by 64*32 (1 MB).
>  > -This is considered to be the default translation.
>  > -
>  > -With respect to the limit of 1023 cylinders using C/H/S you can only
>  > -address the first GB of your disk in the partition table.  Therefore
>  > -BIOSes of some newer controllers based on the AIC-6260/6360 support
>  > -extended translation.  This means that the BIOS uses 255 for heads,
>  > -63 for sectors and then divides the capacity of the disk by 255*63
>  > -(about 8 MB), as soon it sees a disk greater than 1 GB.  That results
>  > -in a maximum of about 8 GB addressable diskspace in the partition table
>  > -(but there are already bigger disks out there today).
>  > -
>  > -To make it even more complicated the translation mode might/might
>  > -not be configurable in certain BIOS setups.
>  > -
>  > -This driver does some more or less failsafe guessing to get the
>  > -geometry right in most cases:
>  > -
>  > -- for disks<1GB: use default translation (C/32/64)
>  > -
>  > -- for disks>1GB:
>  > -  - take current geometry from the partition table
>  > -    (using scsicam_bios_param and accept only `valid' geometries,
>  > -    ie. either (C/32/64) or (C/63/255)).  This can be extended   
> translation
>  > -    even if it's not enabled in the driver.
>  > -
>  > -  - if that fails, take extended translation if enabled by override,
>  > -    kernel or module parameter, otherwise take default translation and
>  > -    ask the user for verification.  This might on not yet partitioned
>  > -    disks.
>  > -
>  > -
>  > -REFERENCES USED:
>  > -
>  > - "AIC-6260 SCSI Chip Specification", Adaptec Corporation.
>  > -
>  > - "SCSI COMPUTER SYSTEM INTERFACE - 2 (SCSI-2)", X3T9.2/86-109 rev. 10h
>  > -
>  > - "Writing a SCSI device driver for Linux", Rik Faith (faith at cs.unc.edu)
>  > -
>  > - "Kernel Hacker's Guide", Michael K. Johnson (johnsonm at sunsite.unc.edu)
>  > -
>  > - "Adaptec 1520/1522 User's Guide", Adaptec Corporation.
>  > -
>  > - Michael K. Johnson (johnsonm at sunsite.unc.edu)
>  > -
>  > - Drew Eckhardt (drew at cs.colorado.edu)
>  > -
>  > - Eric Youngdale (eric at andante.org)
>  > -
>  > - special thanks to Eric Youngdale for the free(!) supplying the
>  > - documentation on the chip.
>  >  
> 
> 



Thanks,
Mauro


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