Merge branch 'master'

2026-05-01 15:00:59 -07:00 · 2005-11-05 14:38:55 -05:00
parent 9e0cb06b17 fecb4a0c87
commit 328198acb7
1992 changed files with 134098 additions and 102044 deletions
@@ -239,9 +239,9 @@ X!Ilib/string.c
     <title>Network device support</title>
     <sect1><title>Driver Support</title>
 !Enet/core/dev.c
-     </sect1>
-     <sect1><title>8390 Based Network Cards</title>
-!Edrivers/net/8390.c
+!Enet/ethernet/eth.c
+!Einclude/linux/etherdevice.h
+!Enet/core/wireless.c
     </sect1>
     <sect1><title>Synchronous PPP</title>
 !Edrivers/net/wan/syncppp.c
@@ -0,0 +1,122 @@
+RCU Torture Test Operation
+
+
+CONFIG_RCU_TORTURE_TEST
+
+The CONFIG_RCU_TORTURE_TEST config option is available for all RCU
+implementations.  It creates an rcutorture kernel module that can
+be loaded to run a torture test.  The test periodically outputs
+status messages via printk(), which can be examined via the dmesg
+command (perhaps grepping for "rcutorture").  The test is started
+when the module is loaded, and stops when the module is unloaded.
+
+However, actually setting this config option to "y" results in the system
+running the test immediately upon boot, and ending only when the system
+is taken down.  Normally, one will instead want to build the system
+with CONFIG_RCU_TORTURE_TEST=m and to use modprobe and rmmod to control
+the test, perhaps using a script similar to the one shown at the end of
+this document.  Note that you will need CONFIG_MODULE_UNLOAD in order
+to be able to end the test.
+
+
+MODULE PARAMETERS
+
+This module has the following parameters:
+
+nreaders	This is the number of RCU reading threads supported.
+		The default is twice the number of CPUs.  Why twice?
+		To properly exercise RCU implementations with preemptible
+		read-side critical sections.
+
+stat_interval	The number of seconds between output of torture
+		statistics (via printk()).  Regardless of the interval,
+		statistics are printed when the module is unloaded.
+		Setting the interval to zero causes the statistics to
+		be printed -only- when the module is unloaded, and this
+		is the default.
+
+verbose		Enable debug printk()s.  Default is disabled.
+
+
+OUTPUT
+
+The statistics output is as follows:
+
+	rcutorture: --- Start of test: nreaders=16 stat_interval=0 verbose=0
+	rcutorture: rtc: 0000000000000000 ver: 1916 tfle: 0 rta: 1916 rtaf: 0 rtf: 1915
+	rcutorture: Reader Pipe:  1466408 9747 0 0 0 0 0 0 0 0 0
+	rcutorture: Reader Batch:  1464477 11678 0 0 0 0 0 0 0 0
+	rcutorture: Free-Block Circulation:  1915 1915 1915 1915 1915 1915 1915 1915 1915 1915 0
+	rcutorture: --- End of test
+
+The command "dmesg | grep rcutorture:" will extract this information on
+most systems.  On more esoteric configurations, it may be necessary to
+use other commands to access the output of the printk()s used by
+the RCU torture test.  The printk()s use KERN_ALERT, so they should
+be evident.  ;-)
+
+The entries are as follows:
+
+o	"ggp": The number of counter flips (or batches) since boot.
+
+o	"rtc": The hexadecimal address of the structure currently visible
+	to readers.
+
+o	"ver": The number of times since boot that the rcutw writer task
+	has changed the structure visible to readers.
+
+o	"tfle": If non-zero, indicates that the "torture freelist"
+	containing structure to be placed into the "rtc" area is empty.
+	This condition is important, since it can fool you into thinking
+	that RCU is working when it is not.  :-/
+
+o	"rta": Number of structures allocated from the torture freelist.
+
+o	"rtaf": Number of allocations from the torture freelist that have
+	failed due to the list being empty.
+
+o	"rtf": Number of frees into the torture freelist.
+
+o	"Reader Pipe": Histogram of "ages" of structures seen by readers.
+	If any entries past the first two are non-zero, RCU is broken.
+	And rcutorture prints the error flag string "!!!" to make sure
+	you notice.  The age of a newly allocated structure is zero,
+	it becomes one when removed from reader visibility, and is
+	incremented once per grace period subsequently -- and is freed
+	after passing through (RCU_TORTURE_PIPE_LEN-2) grace periods.
+
+	The output displayed above was taken from a correctly working
+	RCU.  If you want to see what it looks like when broken, break
+	it yourself.  ;-)
+
+o	"Reader Batch": Another histogram of "ages" of structures seen
+	by readers, but in terms of counter flips (or batches) rather
+	than in terms of grace periods.  The legal number of non-zero
+	entries is again two.  The reason for this separate view is
+	that it is easier to get the third entry to show up in the
+	"Reader Batch" list than in the "Reader Pipe" list.
+
+o	"Free-Block Circulation": Shows the number of torture structures
+	that have reached a given point in the pipeline.  The first element
+	should closely correspond to the number of structures allocated,
+	the second to the number that have been removed from reader view,
+	and all but the last remaining to the corresponding number of
+	passes through a grace period.  The last entry should be zero,
+	as it is only incremented if a torture structure's counter
+	somehow gets incremented farther than it should.
+
+
+USAGE
+
+The following script may be used to torture RCU:
+
+	#!/bin/sh
+
+	modprobe rcutorture
+	sleep 100
+	rmmod rcutorture
+	dmesg | grep rcutorture:
+
+The output can be manually inspected for the error flag of "!!!".
+One could of course create a more elaborate script that automatically
+checked for such errors.
@@ -81,7 +81,8 @@ Adding New Machines

  Any large scale modifications, or new drivers should be discussed
  on the ARM kernel mailing list (linux-arm-kernel) before being
-  attempted.
+  attempted. See http://www.arm.linux.org.uk/mailinglists/ for the
+  mailing list information.


 NAND
@@ -120,6 +121,43 @@ Clock Management
  various clock units


+Platform Data
+-------------
+
+  Whenever a device has platform specific data that is specified
+  on a per-machine basis, care should be taken to ensure the
+  following:
+
+    1) that default data is not left in the device to confuse the
+       driver if a machine does not set it at startup
+
+    2) the data should (if possible) be marked as __initdata,
+       to ensure that the data is thrown away if the machine is
+       not the one currently in use.
+
+       The best way of doing this is to make a function that
+       kmalloc()s an area of memory, and copies the __initdata
+       and then sets the relevant device's platform data. Making
+       the function `__init` takes care of ensuring it is discarded
+       with the rest of the initialisation code
+
+       static __init void s3c24xx_xxx_set_platdata(struct xxx_data *pd)
+       {
+           struct s3c2410_xxx_mach_info *npd;
+
+	   npd = kmalloc(sizeof(struct s3c2410_xxx_mach_info), GFP_KERNEL);
+	   if (npd) {
+	      memcpy(npd, pd, sizeof(struct s3c2410_xxx_mach_info));
+	      s3c_device_xxx.dev.platform_data = npd;
+	   } else {
+              printk(KERN_ERR "no memory for xxx platform data\n");
+	   }
+	}
+
+	Note, since the code is marked as __init, it should not be
+	exported outside arch/arm/mach-s3c2410/, or exported to
+	modules via EXPORT_SYMBOL() and related functions.
+
 Port Contributors
 -----------------

@@ -149,6 +187,7 @@ Document Changes
  06 Mar 2005 - BJD - Added Christer Weinigel
  08 Mar 2005 - BJD - Added LCVR to list of people, updated introduction
  08 Mar 2005 - BJD - Added section on adding machines
+  09 Sep 2005 - BJD - Added section on platform data

 Document Author
 ---------------
@@ -94,7 +94,7 @@ the available CPU and Memory resources amongst the requesting tasks.
 But larger systems, which benefit more from careful processor and
 memory placement to reduce memory access times and contention,
 and which typically represent a larger investment for the customer,
-can benefit from explictly placing jobs on properly sized subsets of
+can benefit from explicitly placing jobs on properly sized subsets of
 the system.

 This can be especially valuable on:
@@ -50,9 +50,14 @@ userspace utilities, etc.
 Features
 ========

- This is a complete rewrite of the NTFS driver that used to be in the kernel.
-  This new driver implements NTFS read support and is functionally equivalent
-  to the old ntfs driver.
+- This is a complete rewrite of the NTFS driver that used to be in the 2.4 and
+  earlier kernels.  This new driver implements NTFS read support and is
+  functionally equivalent to the old ntfs driver and it also implements limited
+  write support.  The biggest limitation at present is that files/directories
+  cannot be created or deleted.  See below for the list of write features that
+  are so far supported.  Another limitation is that writing to compressed files
+  is not implemented at all.  Also, neither read nor write access to encrypted
+  files is so far implemented.
 - The new driver has full support for sparse files on NTFS 3.x volumes which
  the old driver isn't happy with.
 - The new driver supports execution of binaries due to mmap() now being
@@ -78,7 +83,20 @@ Features
 - The new driver supports fsync(2), fdatasync(2), and msync(2).
 - The new driver supports readv(2) and writev(2).
 - The new driver supports access time updates (including mtime and ctime).
-
+- The new driver supports truncate(2) and open(2) with O_TRUNC.  But at present
+  only very limited support for highly fragmented files, i.e. ones which have
+  their data attribute split across multiple extents, is included.  Another
+  limitation is that at present truncate(2) will never create sparse files,
+  since to mark a file sparse we need to modify the directory entry for the
+  file and we do not implement directory modifications yet.
+- The new driver supports write(2) which can both overwrite existing data and
+  extend the file size so that you can write beyond the existing data.  Also,
+  writing into sparse regions is supported and the holes are filled in with
+  clusters.  But at present only limited support for highly fragmented files,
+  i.e. ones which have their data attribute split across multiple extents, is
+  included.  Another limitation is that write(2) will never create sparse
+  files, since to mark a file sparse we need to modify the directory entry for
+  the file and we do not implement directory modifications yet.

 Supported mount options
 =======================
@@ -439,6 +457,22 @@ ChangeLog

 Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.

+2.1.25:
+	- Write support is now extended with write(2) being able to both
+	  overwrite existing file data and to extend files.  Also, if a write
+	  to a sparse region occurs, write(2) will fill in the hole.  Note,
+	  mmap(2) based writes still do not support writing into holes or
+	  writing beyond the initialized size.
+	- Write support has a new feature and that is that truncate(2) and
+	  open(2) with O_TRUNC are now implemented thus files can be both made
+	  smaller and larger.
+	- Note: Both write(2) and truncate(2)/open(2) with O_TRUNC still have
+	  limitations in that they
+	  - only provide limited support for highly fragmented files.
+	  - only work on regular, i.e. uncompressed and unencrypted files.
+	  - never create sparse files although this will change once directory
+	    operations are implemented.
+	- Lots of bug fixes and enhancements across the board.
 2.1.24:
 	- Support journals ($LogFile) which have been modified by chkdsk.  This
 	  means users can boot into Windows after we marked the volume dirty.
@@ -19,15 +19,43 @@ Mount Options

 When mounting an XFS filesystem, the following options are accepted.

-  biosize=size
-	Sets the preferred buffered I/O size (default size is 64K).
-	"size" must be expressed as the logarithm (base2) of the
-	desired I/O size.
-	Valid values for this option are 14 through 16, inclusive
-	(i.e. 16K, 32K, and 64K bytes).  On machines with a 4K
-	pagesize, 13 (8K bytes) is also a valid size.
-	The preferred buffered I/O size can also be altered on an
-	individual file basis using the ioctl(2) system call.
+  allocsize=size
+	Sets the buffered I/O end-of-file preallocation size when
+	doing delayed allocation writeout (default size is 64KiB).
+	Valid values for this option are page size (typically 4KiB)
+	through to 1GiB, inclusive, in power-of-2 increments.
+
+  attr2/noattr2
+	The options enable/disable (default is disabled for backward
+	compatibility on-disk) an "opportunistic" improvement to be
+	made in the way inline extended attributes are stored on-disk.
+	When the new form is used for the first time (by setting or
+	removing extended attributes) the on-disk superblock feature
+	bit field will be updated to reflect this format being in use.
+
+  barrier
+	Enables the use of block layer write barriers for writes into
+	the journal and unwritten extent conversion.  This allows for
+	drive level write caching to be enabled, for devices that
+	support write barriers.
+
+  dmapi
+	Enable the DMAPI (Data Management API) event callouts.
+	Use with the "mtpt" option.
+
+  grpid/bsdgroups and nogrpid/sysvgroups
+	These options define what group ID a newly created file gets.
+	When grpid is set, it takes the group ID of the directory in
+	which it is created; otherwise (the default) it takes the fsgid
+	of the current process, unless the directory has the setgid bit
+	set, in which case it takes the gid from the parent directory,
+	and also gets the setgid bit set if it is a directory itself.
+
+  ihashsize=value
+	Sets the number of hash buckets available for hashing the
+	in-memory inodes of the specified mount point.  If a value
+	of zero is used, the value selected by the default algorithm
+	will be displayed in /proc/mounts.

  ikeep/noikeep
 	When inode clusters are emptied of inodes, keep them around
@@ -35,12 +63,31 @@ When mounting an XFS filesystem, the following options are accepted.
 	and is still the default for now.  Using the noikeep option,
 	inode clusters are returned to the free space pool.

+  inode64
+	Indicates that XFS is allowed to create inodes at any location
+	in the filesystem, including those which will result in inode
+	numbers occupying more than 32 bits of significance.  This is
+	provided for backwards compatibility, but causes problems for
+	backup applications that cannot handle large inode numbers.
+
+  largeio/nolargeio
+	If "nolargeio" is specified, the optimal I/O reported in
+	st_blksize by stat(2) will be as small as possible to allow user
+	applications to avoid inefficient read/modify/write I/O.
+	If "largeio" specified, a filesystem that has a "swidth" specified
+	will return the "swidth" value (in bytes) in st_blksize. If the
+	filesystem does not have a "swidth" specified but does specify
+	an "allocsize" then "allocsize" (in bytes) will be returned
+	instead.
+	If neither of these two options are specified, then filesystem
+	will behave as if "nolargeio" was specified.
+
  logbufs=value
 	Set the number of in-memory log buffers.  Valid numbers range
 	from 2-8 inclusive.
 	The default value is 8 buffers for filesystems with a
-	blocksize of 64K, 4 buffers for filesystems with a blocksize
-	of 32K, 3 buffers for filesystems with a blocksize of 16K
+	blocksize of 64KiB, 4 buffers for filesystems with a blocksize
+	of 32KiB, 3 buffers for filesystems with a blocksize of 16KiB
 	and 2 buffers for all other configurations.  Increasing the
 	number of buffers may increase performance on some workloads
 	at the cost of the memory used for the additional log buffers
@@ -49,10 +96,10 @@ When mounting an XFS filesystem, the following options are accepted.
  logbsize=value
 	Set the size of each in-memory log buffer.
 	Size may be specified in bytes, or in kilobytes with a "k" suffix.
-	Valid sizes for version 1 and version 2 logs are 16384 (16k) and 
-	32768 (32k).  Valid sizes for version 2 logs also include 
+	Valid sizes for version 1 and version 2 logs are 16384 (16k) and
+	32768 (32k).  Valid sizes for version 2 logs also include
 	65536 (64k), 131072 (128k) and 262144 (256k).
-	The default value for machines with more than 32MB of memory
+	The default value for machines with more than 32MiB of memory
 	is 32768, machines with less memory use 16384 by default.

  logdev=device and rtdev=device
@@ -62,6 +109,11 @@ When mounting an XFS filesystem, the following options are accepted.
 	optional, and the log section can be separate from the data
 	section or contained within it.

+  mtpt=mountpoint
+	Use with the "dmapi" option.  The value specified here will be
+	included in the DMAPI mount event, and should be the path of
+	the actual mountpoint that is used.
+
  noalign
 	Data allocations will not be aligned at stripe unit boundaries.

@@ -91,13 +143,17 @@ When mounting an XFS filesystem, the following options are accepted.
 	O_SYNC writes can be lost if the system crashes.
 	If timestamp updates are critical, use the osyncisosync option.

-  quota/usrquota/uqnoenforce
+  uquota/usrquota/uqnoenforce/quota
 	User disk quota accounting enabled, and limits (optionally)
-	enforced.
+	enforced.  Refer to xfs_quota(8) for further details.

-  grpquota/gqnoenforce
+  gquota/grpquota/gqnoenforce
 	Group disk quota accounting enabled and limits (optionally)
-	enforced.
+	enforced.  Refer to xfs_quota(8) for further details.
+
+  pquota/prjquota/pqnoenforce
+	Project disk quota accounting enabled and limits (optionally)
+	enforced.  Refer to xfs_quota(8) for further details.

  sunit=value and swidth=value
 	Used to specify the stripe unit and width for a RAID device or
@@ -113,15 +169,21 @@ When mounting an XFS filesystem, the following options are accepted.
 	The "swidth" option is required if the "sunit" option has been
 	specified, and must be a multiple of the "sunit" value.

+  swalloc
+	Data allocations will be rounded up to stripe width boundaries
+	when the current end of file is being extended and the file
+	size is larger than the stripe width size.
+
+
 sysctls
 =======

 The following sysctls are available for the XFS filesystem:

  fs.xfs.stats_clear		(Min: 0  Default: 0  Max: 1)
-	Setting this to "1" clears accumulated XFS statistics 
+	Setting this to "1" clears accumulated XFS statistics
 	in /proc/fs/xfs/stat.  It then immediately resets to "0".
-  
+
  fs.xfs.xfssyncd_centisecs	(Min: 100  Default: 3000  Max: 720000)
  	The interval at which the xfssyncd thread flushes metadata
  	out to disk.  This thread will flush log activity out, and
@@ -143,9 +205,9 @@ The following sysctls are available for the XFS filesystem:
 		XFS_ERRLEVEL_HIGH:      5

  fs.xfs.panic_mask		(Min: 0  Default: 0  Max: 127)
-	Causes certain error conditions to call BUG(). Value is a bitmask; 
+	Causes certain error conditions to call BUG(). Value is a bitmask;
 	AND together the tags which represent errors which should cause panics:
-	
+
 		XFS_NO_PTAG                     0
 		XFS_PTAG_IFLUSH                 0x00000001
 		XFS_PTAG_LOGRES                 0x00000002
@@ -155,7 +217,7 @@ The following sysctls are available for the XFS filesystem:
 		XFS_PTAG_SHUTDOWN_IOERROR       0x00000020
 		XFS_PTAG_SHUTDOWN_LOGERROR      0x00000040

-	This option is intended for debugging only.		
+	This option is intended for debugging only.

  fs.xfs.irix_symlink_mode	(Min: 0  Default: 0  Max: 1)
 	Controls whether symlinks are created with mode 0777 (default)
@@ -164,25 +226,37 @@ The following sysctls are available for the XFS filesystem:
  fs.xfs.irix_sgid_inherit	(Min: 0  Default: 0  Max: 1)
 	Controls files created in SGID directories.
 	If the group ID of the new file does not match the effective group
-	ID or one of the supplementary group IDs of the parent dir, the 
-	ISGID bit is cleared if the irix_sgid_inherit compatibility sysctl 
+	ID or one of the supplementary group IDs of the parent dir, the
+	ISGID bit is cleared if the irix_sgid_inherit compatibility sysctl
 	is set.

  fs.xfs.restrict_chown		(Min: 0  Default: 1  Max: 1)
  	Controls whether unprivileged users can use chown to "give away"
 	a file to another user.

-  fs.xfs.inherit_sync		(Min: 0  Default: 1  Max 1)
-	Setting this to "1" will cause the "sync" flag set 
-	by the chattr(1) command on a directory to be
+  fs.xfs.inherit_sync		(Min: 0  Default: 1  Max: 1)
+	Setting this to "1" will cause the "sync" flag set
+	by the xfs_io(8) chattr command on a directory to be
 	inherited by files in that directory.

-  fs.xfs.inherit_nodump		(Min: 0  Default: 1  Max 1)
-	Setting this to "1" will cause the "nodump" flag set 
-	by the chattr(1) command on a directory to be
+  fs.xfs.inherit_nodump		(Min: 0  Default: 1  Max: 1)
+	Setting this to "1" will cause the "nodump" flag set
+	by the xfs_io(8) chattr command on a directory to be
 	inherited by files in that directory.

-  fs.xfs.inherit_noatime	(Min: 0  Default: 1  Max 1)
-	Setting this to "1" will cause the "noatime" flag set 
-	by the chattr(1) command on a directory to be
+  fs.xfs.inherit_noatime	(Min: 0  Default: 1  Max: 1)
+	Setting this to "1" will cause the "noatime" flag set
+	by the xfs_io(8) chattr command on a directory to be
 	inherited by files in that directory.
+
+  fs.xfs.inherit_nosymlinks	(Min: 0  Default: 1  Max: 1)
+	Setting this to "1" will cause the "nosymlinks" flag set
+	by the xfs_io(8) chattr command on a directory to be
+	inherited by files in that directory.
+
+  fs.xfs.rotorstep		(Min: 1  Default: 1  Max: 256)
+	In "inode32" allocation mode, this option determines how many
+	files the allocator attempts to allocate in the same allocation
+	group before moving to the next allocation group.  The intent
+	is to control the rate at which the allocator moves between
+	allocation groups when allocating extents for new files.
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/string.h>

 #include "linux/firmware.h"

@@ -14,6 +14,8 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/string.h>
 #include <linux/firmware.h>


@@ -273,6 +273,7 @@ For now, you can ignore the `flags' parameter. It is there for future use.
    if (is_isa) {

      /* Discard immediately if this ISA range is already used */
+      /* FIXME: never use check_region(), only request_region() */
      if (check_region(address,FOO_EXTENT))
        goto ERROR0;

@@ -196,7 +196,7 @@ KEY ACCESS PERMISSIONS

 Keys have an owner user ID, a group access ID, and a permissions mask. The mask
 has up to eight bits each for possessor, user, group and other access. Only
-five of each set of eight bits are defined. These permissions granted are:
+six of each set of eight bits are defined. These permissions granted are:

 (*) View

@@ -224,6 +224,10 @@ five of each set of eight bits are defined. These permissions granted are:
     keyring to a key, a process must have Write permission on the keyring and
     Link permission on the key.

+ (*) Set Attribute
+
+     This permits a key's UID, GID and permissions mask to be changed.
+
 For changing the ownership, group ID or permissions mask, being the owner of
 the key or having the sysadmin capability is sufficient.

@@ -242,15 +246,15 @@ about the status of the key service:
     this way:

 	SERIAL   FLAGS  USAGE EXPY PERM     UID   GID   TYPE      DESCRIPTION: SUMMARY
-	00000001 I-----    39 perm 1f1f0000     0     0 keyring   _uid_ses.0: 1/4
-	00000002 I-----     2 perm 1f1f0000     0     0 keyring   _uid.0: empty
-	00000007 I-----     1 perm 1f1f0000     0     0 keyring   _pid.1: empty
-	0000018d I-----     1 perm 1f1f0000     0     0 keyring   _pid.412: empty
-	000004d2 I--Q--     1 perm 1f1f0000    32    -1 keyring   _uid.32: 1/4
-	000004d3 I--Q--     3 perm 1f1f0000    32    -1 keyring   _uid_ses.32: empty
+	00000001 I-----    39 perm 1f3f0000     0     0 keyring   _uid_ses.0: 1/4
+	00000002 I-----     2 perm 1f3f0000     0     0 keyring   _uid.0: empty
+	00000007 I-----     1 perm 1f3f0000     0     0 keyring   _pid.1: empty
+	0000018d I-----     1 perm 1f3f0000     0     0 keyring   _pid.412: empty
+	000004d2 I--Q--     1 perm 1f3f0000    32    -1 keyring   _uid.32: 1/4
+	000004d3 I--Q--     3 perm 1f3f0000    32    -1 keyring   _uid_ses.32: empty
 	00000892 I--QU-     1 perm 1f000000     0     0 user      metal:copper: 0
-	00000893 I--Q-N     1  35s 1f1f0000     0     0 user      metal:silver: 0
-	00000894 I--Q--     1  10h 001f0000     0     0 user      metal:gold: 0
+	00000893 I--Q-N     1  35s 1f3f0000     0     0 user      metal:silver: 0
+	00000894 I--Q--     1  10h 003f0000     0     0 user      metal:gold: 0

     The flags are:

@@ -0,0 +1,45 @@
+Copyright (c)  2003-2005 QLogic Corporation
+QLogic Linux Fibre Channel HBA Driver
+
+This program includes a device driver for Linux 2.6 that may be
+distributed with QLogic hardware specific firmware binary file.
+You may modify and redistribute the device driver code under the
+GNU General Public License as published by the Free Software
+Foundation (version 2 or a later version).
+
+You may redistribute the hardware specific firmware binary file
+under the following terms:
+
+	1. Redistribution of source code (only if applicable),
+	   must retain the above copyright notice, this list of
+	   conditions and the following disclaimer.
+
+	2. Redistribution in binary form must reproduce the above
+	   copyright notice, this list of conditions and the
+	   following disclaimer in the documentation and/or other
+	   materials provided with the distribution.
+
+	3. The name of QLogic Corporation may not be used to
+	   endorse or promote products derived from this software
+	   without specific prior written permission
+
+REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
+THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
+CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
+OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
+TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
+ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
+COMBINATION WITH THIS PROGRAM.
@@ -116,12 +116,15 @@ hardware.
 	line becoming inactive or the tty layer indicating we want
 	to stop transmission due to an XOFF character.

+	The driver should stop transmitting characters as soon as
+	possible.
+
 	Locking: port->lock taken.
 	Interrupts: locally disabled.
 	This call must not sleep

  start_tx(port)
-	start transmitting characters.
+	Start transmitting characters.

 	Locking: port->lock taken.
 	Interrupts: locally disabled.
@@ -281,26 +284,31 @@ hardware.
 Other functions
 ---------------

-uart_update_timeout(port,cflag,quot)
+uart_update_timeout(port,cflag,baud)
 	Update the FIFO drain timeout, port->timeout, according to the
-	number of bits, parity, stop bits and quotient.
+	number of bits, parity, stop bits and baud rate.

 	Locking: caller is expected to take port->lock
 	Interrupts: n/a

-uart_get_baud_rate(port,termios)
+uart_get_baud_rate(port,termios,old,min,max)
 	Return the numeric baud rate for the specified termios, taking
 	account of the special 38400 baud "kludge".  The B0 baud rate
 	is mapped to 9600 baud.

+	If the baud rate is not within min..max, then if old is non-NULL,
+	the original baud rate will be tried.  If that exceeds the
+	min..max constraint, 9600 baud will be returned.  termios will
+	be updated to the baud rate in use.
+
+	Note: min..max must always allow 9600 baud to be selected.
+
 	Locking: caller dependent.
 	Interrupts: n/a

-uart_get_divisor(port,termios,oldtermios)
-	Return the divsor (baud_base / baud) for the selected baud rate
-	specified by termios.  If the baud rate is out of range, try
-	the original baud rate specified by oldtermios (if non-NULL).
-	If that fails, try 9600 baud.
+uart_get_divisor(port,baud)
+	Return the divsor (baud_base / baud) for the specified baud
+	rate, appropriately rounded.

 	If 38400 baud and custom divisor is selected, return the
 	custom divisor instead.
@@ -308,6 +316,46 @@ uart_get_divisor(port,termios,oldtermios)
 	Locking: caller dependent.
 	Interrupts: n/a

+uart_match_port(port1,port2)
+	This utility function can be used to determine whether two
+	uart_port structures describe the same port.
+
+	Locking: n/a
+	Interrupts: n/a
+
+uart_write_wakeup(port)
+	A driver is expected to call this function when the number of
+	characters in the transmit buffer have dropped below a threshold.
+
+	Locking: port->lock should be held.
+	Interrupts: n/a
+
+uart_register_driver(drv)
+	Register a uart driver with the core driver.  We in turn register
+	with the tty layer, and initialise the core driver per-port state.
+
+	drv->port should be NULL, and the per-port structures should be
+	registered using uart_add_one_port after this call has succeeded.
+
+	Locking: none
+	Interrupts: enabled
+
+uart_unregister_driver()
+	Remove all references to a driver from the core driver.  The low
+	level driver must have removed all its ports via the
+	uart_remove_one_port() if it registered them with uart_add_one_port().
+
+	Locking: none
+	Interrupts: enabled
+
+uart_suspend_port()
+
+uart_resume_port()
+
+uart_add_one_port()
+
+uart_remove_one_port()
+
 Other notes
 -----------

@@ -2295,6 +2295,11 @@ W:	http://tpmdd.sourceforge.net
 L:	tpmdd-devel@lists.sourceforge.net
 S:	Maintained

+Telecom Clock Driver for MCPL0010
+P: Mark Gross
+M: mark.gross@intel.com
+S: Supported
+
 TENSILICA XTENSA PORT (xtensa):
 P:	Chris Zankel
 M:	chris@zankel.net
@@ -54,6 +54,10 @@ INSTALLING the kernel:

 		gzip -cd linux-2.6.XX.tar.gz | tar xvf -

+   or
+		bzip2 -dc linux-2.6.XX.tar.bz2 | tar xvf -
+
+
   Replace "XX" with the version number of the latest kernel.

   Do NOT use the /usr/src/linux area! This area has a (usually
@@ -55,10 +55,6 @@
 #include "proto.h"
 #include "irq_impl.h"

-u64 jiffies_64 = INITIAL_JIFFIES;
-
-EXPORT_SYMBOL(jiffies_64);
-
 extern unsigned long wall_jiffies;	/* kernel/timer.c */

 static int set_rtc_mmss(unsigned long);
@@ -194,6 +194,13 @@ config ARCH_VERSATILE
 	help
 	  This enables support for ARM Ltd Versatile board.

+config ARCH_REALVIEW
+	bool "RealView"
+	select ARM_AMBA
+	select ICST307
+	help
+	  This enables support for ARM Ltd RealView boards.
+
 config ARCH_IMX
 	bool "IMX"

@@ -244,6 +251,8 @@ source "arch/arm/mach-versatile/Kconfig"

 source "arch/arm/mach-aaec2000/Kconfig"

+source "arch/arm/mach-realview/Kconfig"
+
 # Definitions to make life easier
 config ARCH_ACORN
 	bool
@@ -340,6 +349,13 @@ config NR_CPUS
 	depends on SMP
 	default "4"

+config HOTPLUG_CPU
+	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
+	depends on SMP && HOTPLUG && EXPERIMENTAL
+	help
+	  Say Y here to experiment with turning CPUs off and on.  CPUs
+	  can be controlled through /sys/devices/system/cpu.
+
 config PREEMPT
 	bool "Preemptible Kernel (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
@@ -688,8 +704,7 @@ source "drivers/acorn/block/Kconfig"

 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
 	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
-	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
-	|| MACH_MP1000
+	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
 source "drivers/ide/Kconfig"
 endif

@@ -38,6 +38,7 @@ comma = ,
 # macro, but instead defines a whole series of macros which makes
 # testing for a specific architecture or later rather impossible.
 arch-$(CONFIG_CPU_32v6)		:=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
+arch-$(CONFIG_CPU_32v6K)	:=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
 arch-$(CONFIG_CPU_32v5)		:=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4)
 arch-$(CONFIG_CPU_32v4)		:=-D__LINUX_ARM_ARCH__=4 -march=armv4
 arch-$(CONFIG_CPU_32v3)		:=-D__LINUX_ARM_ARCH__=3 -march=armv3
@@ -99,6 +100,7 @@ textaddr-$(CONFIG_ARCH_FORTUNET)   := 0xc0008000
 machine-$(CONFIG_ARCH_IMX)	   := imx
 machine-$(CONFIG_ARCH_H720X)	   := h720x
 machine-$(CONFIG_ARCH_AAEC2000)   := aaec2000
+ machine-$(CONFIG_ARCH_REALVIEW)   := realview

 ifeq ($(CONFIG_ARCH_EBSA110),y)
 # This is what happens if you forget the IOCS16 line.
@@ -142,7 +144,7 @@ drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 drivers-$(CONFIG_ARCH_CLPS7500)	+= drivers/acorn/char/
 drivers-$(CONFIG_ARCH_L7200)	+= drivers/acorn/char/

-libs-y				+= arch/arm/lib/
+libs-y				:= arch/arm/lib/ $(libs-y)

 # Default target when executing plain make
 ifeq ($(CONFIG_XIP_KERNEL),y)
@@ -39,8 +39,7 @@
    defined(CONFIG_ARCH_IXP4XX) || \
    defined(CONFIG_ARCH_IXP2000) || \
    defined(CONFIG_ARCH_LH7A40X) || \
-    defined(CONFIG_ARCH_OMAP) || \
-    defined(CONFIG_MACH_MP1000)
+    defined(CONFIG_ARCH_OMAP)
 		.macro	loadsp,	rb
 		addruart \rb
 		.endm
@@ -10,6 +10,8 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/string.h>
+#include <linux/slab.h>

 #include <asm/io.h>
 #include <asm/irq.h>
@@ -33,8 +33,8 @@
 #include <asm/cacheflush.h>

 #undef DEBUG
-
 #undef STATS
+
 #ifdef STATS
 #define DO_STATS(X) do { X ; } while (0)
 #else
@@ -52,26 +52,31 @@ struct safe_buffer {
 	int		direction;

 	/* safe buffer info */
-	struct dma_pool *pool;
+	struct dmabounce_pool *pool;
 	void		*safe;
 	dma_addr_t	safe_dma_addr;
 };

+struct dmabounce_pool {
+	unsigned long	size;
+	struct dma_pool	*pool;
+#ifdef STATS
+	unsigned long	allocs;
+#endif
+};
+
 struct dmabounce_device_info {
 	struct list_head node;

 	struct device *dev;
-	struct dma_pool *small_buffer_pool;
-	struct dma_pool *large_buffer_pool;
 	struct list_head safe_buffers;
-	unsigned long small_buffer_size, large_buffer_size;
 #ifdef STATS
-	unsigned long sbp_allocs;
-	unsigned long lbp_allocs;
 	unsigned long total_allocs;
 	unsigned long map_op_count;
 	unsigned long bounce_count;
 #endif
+	struct dmabounce_pool	small;
+	struct dmabounce_pool	large;
 };

 static LIST_HEAD(dmabounce_devs);
@@ -82,9 +87,9 @@ static void print_alloc_stats(struct dmabounce_device_info *device_info)
 	printk(KERN_INFO
 		"%s: dmabounce: sbp: %lu, lbp: %lu, other: %lu, total: %lu\n",
 		device_info->dev->bus_id,
-		device_info->sbp_allocs, device_info->lbp_allocs,
-		device_info->total_allocs - device_info->sbp_allocs -
-			device_info->lbp_allocs,
+		device_info->small.allocs, device_info->large.allocs,
+		device_info->total_allocs - device_info->small.allocs -
+			device_info->large.allocs,
 		device_info->total_allocs);
 }
 #endif
@@ -106,18 +111,22 @@ find_dmabounce_dev(struct device *dev)
 /* allocate a 'safe' buffer and keep track of it */
 static inline struct safe_buffer *
 alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
-			size_t size, enum dma_data_direction dir)
+		  size_t size, enum dma_data_direction dir)
 {
 	struct safe_buffer *buf;
-	struct dma_pool *pool;
+	struct dmabounce_pool *pool;
 	struct device *dev = device_info->dev;
-	void *safe;
-	dma_addr_t safe_dma_addr;

 	dev_dbg(dev, "%s(ptr=%p, size=%d, dir=%d)\n",
 		__func__, ptr, size, dir);

-	DO_STATS ( device_info->total_allocs++ );
+	if (size <= device_info->small.size) {
+		pool = &device_info->small;
+	} else if (size <= device_info->large.size) {
+		pool = &device_info->large;
+	} else {
+		pool = NULL;
+	}

 	buf = kmalloc(sizeof(struct safe_buffer), GFP_ATOMIC);
 	if (buf == NULL) {
@@ -125,41 +134,35 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
 		return NULL;
 	}

-	if (size <= device_info->small_buffer_size) {
-		pool = device_info->small_buffer_pool;
-		safe = dma_pool_alloc(pool, GFP_ATOMIC, &safe_dma_addr);
+	buf->ptr = ptr;
+	buf->size = size;
+	buf->direction = dir;
+	buf->pool = pool;

-		DO_STATS ( device_info->sbp_allocs++ );
-	} else if (size <= device_info->large_buffer_size) {
-		pool = device_info->large_buffer_pool;
-		safe = dma_pool_alloc(pool, GFP_ATOMIC, &safe_dma_addr);
-
-		DO_STATS ( device_info->lbp_allocs++ );
+	if (pool) {
+		buf->safe = dma_pool_alloc(pool->pool, GFP_ATOMIC,
+					   &buf->safe_dma_addr);
 	} else {
-		pool = NULL;
-		safe = dma_alloc_coherent(dev, size, &safe_dma_addr, GFP_ATOMIC);
+		buf->safe = dma_alloc_coherent(dev, size, &buf->safe_dma_addr,
+					       GFP_ATOMIC);
 	}

-	if (safe == NULL) {
-		dev_warn(device_info->dev,
-			"%s: could not alloc dma memory (size=%d)\n",
-		       __func__, size);
+	if (buf->safe == NULL) {
+		dev_warn(dev,
+			 "%s: could not alloc dma memory (size=%d)\n",
+			 __func__, size);
 		kfree(buf);
 		return NULL;
 	}

 #ifdef STATS
+	if (pool)
+		pool->allocs++;
+	device_info->total_allocs++;
 	if (device_info->total_allocs % 1000 == 0)
 		print_alloc_stats(device_info);
 #endif

-	buf->ptr = ptr;
-	buf->size = size;
-	buf->direction = dir;
-	buf->pool = pool;
-	buf->safe = safe;
-	buf->safe_dma_addr = safe_dma_addr;
-
 	list_add(&buf->node, &device_info->safe_buffers);

 	return buf;
@@ -186,7 +189,7 @@ free_safe_buffer(struct dmabounce_device_info *device_info, struct safe_buffer *
 	list_del(&buf->node);

 	if (buf->pool)
-		dma_pool_free(buf->pool, buf->safe, buf->safe_dma_addr);
+		dma_pool_free(buf->pool->pool, buf->safe, buf->safe_dma_addr);
 	else
 		dma_free_coherent(device_info->dev, buf->size, buf->safe,
 				    buf->safe_dma_addr);
@@ -197,12 +200,10 @@ free_safe_buffer(struct dmabounce_device_info *device_info, struct safe_buffer *
 /* ************************************************** */

 #ifdef STATS
-
 static void print_map_stats(struct dmabounce_device_info *device_info)
 {
-	printk(KERN_INFO
-		"%s: dmabounce: map_op_count=%lu, bounce_count=%lu\n",
-		device_info->dev->bus_id,
+	dev_info(device_info->dev,
+		"dmabounce: map_op_count=%lu, bounce_count=%lu\n",
 		device_info->map_op_count, device_info->bounce_count);
 }
 #endif
@@ -258,13 +259,13 @@ map_single(struct device *dev, void *ptr, size_t size,
 				__func__, ptr, buf->safe, size);
 			memcpy(buf->safe, ptr, size);
 		}
-		consistent_sync(buf->safe, size, dir);
+		ptr = buf->safe;

 		dma_addr = buf->safe_dma_addr;
-	} else {
-		consistent_sync(ptr, size, dir);
 	}

+	consistent_sync(ptr, size, dir);
+
 	return dma_addr;
 }

@@ -278,7 +279,7 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
 	/*
 	 * Trying to unmap an invalid mapping
 	 */
-	if (dma_addr == ~0) {
+	if (dma_mapping_error(dma_addr)) {
 		dev_err(dev, "Trying to unmap invalid mapping\n");
 		return;
 	}
@@ -570,11 +571,25 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
 	local_irq_restore(flags);
 }

+static int
+dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev, const char *name,
+		    unsigned long size)
+{
+	pool->size = size;
+	DO_STATS(pool->allocs = 0);
+	pool->pool = dma_pool_create(name, dev, size,
+				     0 /* byte alignment */,
+				     0 /* no page-crossing issues */);
+
+	return pool->pool ? 0 : -ENOMEM;
+}
+
 int
 dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
 			unsigned long large_buffer_size)
 {
 	struct dmabounce_device_info *device_info;
+	int ret;

 	device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
 	if (!device_info) {
@@ -584,45 +599,31 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
 		return -ENOMEM;
 	}

-	device_info->small_buffer_pool =
-		dma_pool_create("small_dmabounce_pool",
-				dev,
-				small_buffer_size,
-				0 /* byte alignment */,
-				0 /* no page-crossing issues */);
-	if (!device_info->small_buffer_pool) {
-		printk(KERN_ERR
-			"dmabounce: could not allocate small DMA pool for %s\n",
-			dev->bus_id);
-		kfree(device_info);
-		return -ENOMEM;
+	ret = dmabounce_init_pool(&device_info->small, dev,
+				  "small_dmabounce_pool", small_buffer_size);
+	if (ret) {
+		dev_err(dev,
+			"dmabounce: could not allocate DMA pool for %ld byte objects\n",
+			small_buffer_size);
+		goto err_free;
 	}

 	if (large_buffer_size) {
-		device_info->large_buffer_pool =
-			dma_pool_create("large_dmabounce_pool",
-					dev,
-					large_buffer_size,
-					0 /* byte alignment */,
-					0 /* no page-crossing issues */);
-		if (!device_info->large_buffer_pool) {
-		printk(KERN_ERR
-			"dmabounce: could not allocate large DMA pool for %s\n",
-			dev->bus_id);
-			dma_pool_destroy(device_info->small_buffer_pool);
-
-			return -ENOMEM;
+		ret = dmabounce_init_pool(&device_info->large, dev,
+					  "large_dmabounce_pool",
+					  large_buffer_size);
+		if (ret) {
+			dev_err(dev,
+				"dmabounce: could not allocate DMA pool for %ld byte objects\n",
+				large_buffer_size);
+			goto err_destroy;
 		}
 	}

 	device_info->dev = dev;
-	device_info->small_buffer_size = small_buffer_size;
-	device_info->large_buffer_size = large_buffer_size;
 	INIT_LIST_HEAD(&device_info->safe_buffers);

 #ifdef STATS
-	device_info->sbp_allocs = 0;
-	device_info->lbp_allocs = 0;
 	device_info->total_allocs = 0;
 	device_info->map_op_count = 0;
 	device_info->bounce_count = 0;
@@ -634,6 +635,12 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
 		dev->bus_id, dev->bus->name);

 	return 0;
+
+ err_destroy:
+	dma_pool_destroy(device_info->small.pool);
+ err_free:
+	kfree(device_info);
+	return ret;
 }

 void
@@ -655,10 +662,10 @@ dmabounce_unregister_dev(struct device *dev)
 		BUG();
 	}

-	if (device_info->small_buffer_pool)
-		dma_pool_destroy(device_info->small_buffer_pool);
-	if (device_info->large_buffer_pool)
-		dma_pool_destroy(device_info->large_buffer_pool);
+	if (device_info->small.pool)
+		dma_pool_destroy(device_info->small.pool);
+	if (device_info->large.pool)
+		dma_pool_destroy(device_info->large.pool);

 #ifdef STATS
 	print_alloc_stats(device_info);
--- a/Show More
+++ b/Show More