- directory with info about Linux on Intel 32 bit architecture.
ia64/
- directory with info about Linux on Intel 64 bit architecture.
-ide.txt
- - important info for users of ATA devices (IDE/EIDE disks and CD-ROMS).
infiniband/
- directory with documents concerning Linux InfiniBand support.
initrd.txt
<chapter id="blkdev">
<title>Block Devices</title>
!Eblock/blk-core.c
+!Iblock/blk-core.c
!Eblock/blk-map.c
!Iblock/blk-sysfs.c
!Eblock/blk-settings.c
!Eblock/blk-exec.c
!Eblock/blk-barrier.c
!Eblock/blk-tag.c
+!Iblock/blk-tag.c
</chapter>
<chapter id="chrdev">
---------------
0. The ide-cd relies on the ide disk driver. See
- Documentation/ide.txt for up-to-date information on the ide
+ Documentation/ide/ide.txt for up-to-date information on the ide
driver.
1. Make sure that the ide and ide-cd drivers are compiled into the
Depending on what type of IDE interface you have, you may need to
specify additional configuration options. See
- Documentation/ide.txt.
+ Documentation/ide/ide.txt.
2. You should also ensure that the iso9660 filesystem is either
compiled into the kernel or available as a loadable module. You
on the primary IDE interface are called `hda' and `hdb',
respectively. The drives on the secondary interface are called
`hdc' and `hdd'. (Interfaces at other locations get other letters
- in the third position; see Documentation/ide.txt.)
+ in the third position; see Documentation/ide/ide.txt.)
If you want your CDROM drive to be found automatically by the
driver, you should make sure your IDE interface uses either the
be jumpered as `master'. (If for some reason you cannot configure
your system in this manner, you can probably still use the driver.
You may have to pass extra configuration information to the kernel
- when you boot, however. See Documentation/ide.txt for more
+ when you boot, however. See Documentation/ide/ide.txt for more
information.)
4. Boot the system. If the drive is recognized, you should see a
This section discusses some common problems encountered when trying to
use the driver, and some possible solutions. Note that if you are
experiencing problems, you should probably also review
-Documentation/ide.txt for current information about the underlying
+Documentation/ide/ide.txt for current information about the underlying
IDE support code. Some of these items apply only to earlier versions
of the driver, but are mentioned here for completeness.
a. Drive is not detected during booting.
- Review the configuration instructions above and in
- Documentation/ide.txt, and check how your hardware is
+ Documentation/ide/ide.txt, and check how your hardware is
configured.
- If your drive is the only device on an IDE interface, it should
- If your IDE interface is not at the standard addresses of 0x170
or 0x1f0, you'll need to explicitly inform the driver using a
- lilo option. See Documentation/ide.txt. (This feature was
+ lilo option. See Documentation/ide/ide.txt. (This feature was
added around kernel version 1.3.30.)
- If the autoprobing is not finding your drive, you can tell the
Support for some interfaces needing extra initialization is
provided in later 1.3.x kernels. You may need to turn on
additional kernel configuration options to get them to work;
- see Documentation/ide.txt.
+ see Documentation/ide/ide.txt.
Even if support is not available for your interface, you may be
able to get it to work with the following procedure. First boot
be worked around by specifying the `serialize' option when
booting. Recent kernels should be able to detect the need for
this automatically in most cases, but the detection is not
- foolproof. See Documentation/ide.txt for more information
+ foolproof. See Documentation/ide/ide.txt for more information
about the `serialize' option and the CMD640B.
- Note that many MS-DOS CDROM drivers will work with such buggy
-Memory Controller
+Memory Resource Controller
+
+NOTE: The Memory Resource Controller has been generically been referred
+to as the memory controller in this document. Do not confuse memory controller
+used here with the memory controller that is used in hardware.
Salient features
a. Enable CONFIG_CGROUPS
b. Enable CONFIG_RESOURCE_COUNTERS
-c. Enable CONFIG_CGROUP_MEM_CONT
+c. Enable CONFIG_CGROUP_MEM_RES_CTLR
1. Prepare the cgroups
# mkdir -p /cgroups
Since now we're in the 0 cgroup,
We can alter the memory limit:
-# echo -n 4M > /cgroups/0/memory.limit_in_bytes
+# echo 4M > /cgroups/0/memory.limit_in_bytes
NOTE: We can use a suffix (k, K, m, M, g or G) to indicate values in kilo,
mega or gigabytes.
availability of memory on the system. The user is required to re-read
this file after a write to guarantee the value committed by the kernel.
-# echo -n 1 > memory.limit_in_bytes
+# echo 1 > memory.limit_in_bytes
# cat memory.limit_in_bytes
4096
The memory.force_empty gives an interface to drop *all* charges by force.
-# echo -n 1 > memory.force_empty
+# echo 1 > memory.force_empty
will drop all charges in cgroup. Currently, this is maintained for test.
Drivers
-------
-The OHCI-1394 drivers in drivers/firewire and drivers/ieee1394 initialize
-the OHCI-1394 controllers to a working state and can be used to enable
-physical DMA. By default you only have to load the driver, and physical
-DMA access will be granted to all remote nodes, but it can be turned off
-when using the ohci1394 driver.
-
-Because these drivers depend on the PCI enumeration to be completed, an
-initialization routine which can runs pretty early (long before console_init(),
+The ohci1394 driver in drivers/ieee1394 initializes the OHCI-1394 controllers
+to a working state and enables physical DMA by default for all remote nodes.
+This can be turned off by ohci1394's module parameter phys_dma=0.
+
+The alternative firewire-ohci driver in drivers/firewire uses filtered physical
+DMA, hence is not yet suitable for remote debugging.
+
+Because ohci1394 depends on the PCI enumeration to be completed, an
+initialization routine which runs pretty early (long before console_init()
which makes the printk buffer appear on the console can be called) was written.
To activate it, enable CONFIG_PROVIDE_OHCI1394_DMA_INIT (Kernel hacking menu:
---------------------------
+What: ide-tape driver
+When: July 2008
+Files: drivers/ide/ide-tape.c
+Why: This driver might not have any users anymore and maintaining it for no
+ reason is an effort no one wants to make.
+Who: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>, Borislav Petkov
+ <petkovbb@googlemail.com>
+
+---------------------------
+
What: libata spindown skipping and warning
When: Dec 2008
Why: Some halt(8) implementations synchronize caches for and spin
is largely pointless as without a lot of work only the most
trivial of Solaris binaries can work with the emulation code.
Who: David S. Miller <davem@davemloft.net>
+
+---------------------------
+
+What: init_mm export
+When: 2.6.26
+Why: Not used in-tree. The current out-of-tree users used it to
+ work around problems in the CPA code which should be resolved
+ by now. One usecase was described to provide verification code
+ of the CPA operation. That's a good idea in general, but such
+ code / infrastructure should be in the kernel and not in some
+ out-of-tree driver.
+Who: Thomas Gleixner <tglx@linutronix.de>
This provides an overview of GPIO access conventions on Linux.
+These calls use the gpio_* naming prefix. No other calls should use that
+prefix, or the related __gpio_* prefix.
+
What is a GPIO?
===============
not care how it's implemented.)
That said, if the convention is supported on their platform, drivers should
-use it when possible. Platforms should declare GENERIC_GPIO support in
-Kconfig (boolean true), which multi-platform drivers can depend on when
-using the include file:
+use it when possible. Platforms must declare GENERIC_GPIO support in their
+Kconfig (boolean true), and provide an <asm/gpio.h> file. Drivers that can't
+work without standard GPIO calls should have Kconfig entries which depend
+on GENERIC_GPIO. The GPIO calls are available, either as "real code" or as
+optimized-away stubs, when drivers use the include file:
- #include <asm/gpio.h>
+ #include <linux/gpio.h>
If you stick to this convention then it'll be easier for other developers to
see what your code is doing, and help maintain it.
or support them in the same way; and any given board might use external
pullups (or pulldowns) so that the on-chip ones should not be used.
(When a circuit needs 5 kOhm, on-chip 100 kOhm resistors won't do.)
+Likewise drive strength (2 mA vs 20 mA) and voltage (1.8V vs 3.3V) is a
+platform-specific issue, as are models like (not) having a one-to-one
+correspondence between configurable pins and GPIOs.
There are other system-specific mechanisms that are not specified here,
like the aforementioned options for input de-glitching and wire-OR output.
--- /dev/null
+00-INDEX
+ - this file
+ChangeLog.ide-cd.1994-2004
+ - ide-cd changelog
+ChangeLog.ide-floppy.1996-2002
+ - ide-floppy changelog
+ChangeLog.ide-tape.1995-2002
+ - ide-tape changelog
+ide-tape.txt
+ - info on the IDE ATAPI streaming tape driver
+ide.txt
+ - important info for users of ATA devices (IDE/EIDE disks and CD-ROMS).
==============================================================================
-
+
The hdparm utility can be used to control various IDE features on a
running system. It is packaged separately. Please Look for it on popular
linux FTP sites.
-
+
*** IMPORTANT NOTICES: BUGGY IDE CHIPSETS CAN CORRUPT DATA!!
================================================================================
-This is the multiple IDE interface driver, as evolved from hd.c.
+This is the multiple IDE interface driver, as evolved from hd.c.
It supports up to 9 IDE interfaces per default, on one or more IRQs (usually
14 & 15). There can be up to two drives per interface, as per the ATA-6 spec.
--------------------------------------------------------
"hdx=" is recognized for all "x" from "a" to "h", such as "hdc".
-
+
"idex=" is recognized for all "x" from "0" to "3", such as "ide1".
"hdx=noprobe" : drive may be present, but do not probe for it
-
+
"hdx=none" : drive is NOT present, ignore cmos and do not probe
-
+
"hdx=nowerr" : ignore the WRERR_STAT bit on this drive
-
+
"hdx=cdrom" : drive is present, and is a cdrom drive
-
+
"hdx=cyl,head,sect" : disk drive is present, with specified geometry
"hdx=remap" : remap access of sector 0 to sector 1 (for EZDrive)
As for VLB, it is safest to not specify it.
Bigger values are safer than smaller ones.
- "idex=noprobe" : do not attempt to access/use this interface
-
"idex=base" : probe for an interface at the addr specified,
where "base" is usually 0x1f0 or 0x170
and "ctl" is assumed to be "base"+0x206
-
+
"idex=base,ctl" : specify both base and ctl
"idex=base,ctl,irq" : specify base, ctl, and irq number
to take effect.
"idex=four" : four drives on idex and ide(x^1) share same ports
-
+
"idex=reset" : reset interface after probe
"idex=ata66" : informs the interface that it has an 80c cable
kernel paremeter to enable probing for VLB version of the chipset (PCI ones
are detected automatically).
-================================================================================
-
-IDE ATAPI streaming tape driver
--------------------------------
-
-This driver is a part of the Linux ide driver and works in co-operation
-with linux/drivers/block/ide.c.
-
-The driver, in co-operation with ide.c, basically traverses the
-request-list for the block device interface. The character device
-interface, on the other hand, creates new requests, adds them
-to the request-list of the block device, and waits for their completion.
-
-Pipelined operation mode is now supported on both reads and writes.
-
-The block device major and minor numbers are determined from the
-tape's relative position in the ide interfaces, as explained in ide.c.
-
-The character device interface consists of the following devices:
-
- ht0 major 37, minor 0 first IDE tape, rewind on close.
- ht1 major 37, minor 1 second IDE tape, rewind on close.
- ...
- nht0 major 37, minor 128 first IDE tape, no rewind on close.
- nht1 major 37, minor 129 second IDE tape, no rewind on close.
- ...
-
-Run /dev/MAKEDEV to create the above entries.
-
-The general magnetic tape commands compatible interface, as defined by
-include/linux/mtio.h, is accessible through the character device.
-
-General ide driver configuration options, such as the interrupt-unmask
-flag, can be configured by issuing an ioctl to the block device interface,
-as any other ide device.
-
-Our own ide-tape ioctl's can be issued to either the block device or
-the character device interface.
-
-Maximal throughput with minimal bus load will usually be achieved in the
-following scenario:
-
- 1. ide-tape is operating in the pipelined operation mode.
- 2. No buffering is performed by the user backup program.
-
-
-
================================================================================
Some Terminology
Format: <cyl>,<head>,<sect>
hd?= [HW] (E)IDE subsystem
- hd?lun= See Documentation/ide.txt.
+ hd?lun= See Documentation/ide/ide.txt.
highmem=nn[KMG] [KNL,BOOT] forces the highmem zone to have an exact
size of <nn>. This works even on boxes that have no
ide= [HW] (E)IDE subsystem
Format: ide=nodma or ide=doubler or ide=reverse
- See Documentation/ide.txt.
+ See Documentation/ide/ide.txt.
ide?= [HW] (E)IDE subsystem
Format: ide?=noprobe or chipset specific parameters.
- See Documentation/ide.txt.
+ See Documentation/ide/ide.txt.
idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed
- See Documentation/ide.txt.
+ See Documentation/ide/ide.txt.
idle= [X86]
Format: idle=poll or idle=mwait
The Kprobes API includes a "register" function and an "unregister"
function for each type of probe. Here are terse, mini-man-page
specifications for these functions and the associated probe handlers
-that you'll write. See the latter half of this document for examples.
+that you'll write. See the files in the samples/kprobes/ sub-directory
+for examples.
4.1 register_kprobe
8. Kprobes Example
-Here's a sample kernel module showing the use of kprobes to dump a
-stack trace and selected i386 registers when do_fork() is called.
------ cut here -----
-/*kprobe_example.c*/
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/kprobes.h>
-#include <linux/sched.h>
-
-/*For each probe you need to allocate a kprobe structure*/
-static struct kprobe kp;
-
-/*kprobe pre_handler: called just before the probed instruction is executed*/
-int handler_pre(struct kprobe *p, struct pt_regs *regs)
-{
- printk("pre_handler: p->addr=0x%p, eip=%lx, eflags=0x%lx\n",
- p->addr, regs->eip, regs->eflags);
- dump_stack();
- return 0;
-}
-
-/*kprobe post_handler: called after the probed instruction is executed*/
-void handler_post(struct kprobe *p, struct pt_regs *regs, unsigned long flags)
-{
- printk("post_handler: p->addr=0x%p, eflags=0x%lx\n",
- p->addr, regs->eflags);
-}
-
-/* fault_handler: this is called if an exception is generated for any
- * instruction within the pre- or post-handler, or when Kprobes
- * single-steps the probed instruction.
- */
-int handler_fault(struct kprobe *p, struct pt_regs *regs, int trapnr)
-{
- printk("fault_handler: p->addr=0x%p, trap #%dn",
- p->addr, trapnr);
- /* Return 0 because we don't handle the fault. */
- return 0;
-}
-
-static int __init kprobe_init(void)
-{
- int ret;
- kp.pre_handler = handler_pre;
- kp.post_handler = handler_post;
- kp.fault_handler = handler_fault;
- kp.symbol_name = "do_fork";
-
- ret = register_kprobe(&kp);
- if (ret < 0) {
- printk("register_kprobe failed, returned %d\n", ret);
- return ret;
- }
- printk("kprobe registered\n");
- return 0;
-}
-
-static void __exit kprobe_exit(void)
-{
- unregister_kprobe(&kp);
- printk("kprobe unregistered\n");
-}
-
-module_init(kprobe_init)
-module_exit(kprobe_exit)
-MODULE_LICENSE("GPL");
------ cut here -----
-
-You can build the kernel module, kprobe-example.ko, using the following
-Makefile:
------ cut here -----
-obj-m := kprobe-example.o
-KDIR := /lib/modules/$(shell uname -r)/build
-PWD := $(shell pwd)
-default:
- $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
-clean:
- rm -f *.mod.c *.ko *.o
------ cut here -----
-
-$ make
-$ su -
-...
-# insmod kprobe-example.ko
-
-You will see the trace data in /var/log/messages and on the console
-whenever do_fork() is invoked to create a new process.
+See samples/kprobes/kprobe_example.c
9. Jprobes Example
-Here's a sample kernel module showing the use of jprobes to dump
-the arguments of do_fork().
------ cut here -----
-/*jprobe-example.c */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/uio.h>
-#include <linux/kprobes.h>
-
-/*
- * Jumper probe for do_fork.
- * Mirror principle enables access to arguments of the probed routine
- * from the probe handler.
- */
-
-/* Proxy routine having the same arguments as actual do_fork() routine */
-long jdo_fork(unsigned long clone_flags, unsigned long stack_start,
- struct pt_regs *regs, unsigned long stack_size,
- int __user * parent_tidptr, int __user * child_tidptr)
-{
- printk("jprobe: clone_flags=0x%lx, stack_size=0x%lx, regs=0x%p\n",
- clone_flags, stack_size, regs);
- /* Always end with a call to jprobe_return(). */
- jprobe_return();
- /*NOTREACHED*/
- return 0;
-}
-
-static struct jprobe my_jprobe = {
- .entry = jdo_fork
-};
-
-static int __init jprobe_init(void)
-{
- int ret;
- my_jprobe.kp.symbol_name = "do_fork";
-
- if ((ret = register_jprobe(&my_jprobe)) <0) {
- printk("register_jprobe failed, returned %d\n", ret);
- return -1;
- }
- printk("Planted jprobe at %p, handler addr %p\n",
- my_jprobe.kp.addr, my_jprobe.entry);
- return 0;
-}
-
-static void __exit jprobe_exit(void)
-{
- unregister_jprobe(&my_jprobe);
- printk("jprobe unregistered\n");
-}
-
-module_init(jprobe_init)
-module_exit(jprobe_exit)
-MODULE_LICENSE("GPL");
------ cut here -----
-
-Build and insert the kernel module as shown in the above kprobe
-example. You will see the trace data in /var/log/messages and on
-the console whenever do_fork() is invoked to create a new process.
-(Some messages may be suppressed if syslogd is configured to
-eliminate duplicate messages.)
+See samples/kprobes/jprobe_example.c
10. Kretprobes Example
-Here's a sample kernel module showing the use of return probes to
-report failed calls to sys_open().
------ cut here -----
-/*kretprobe-example.c*/
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/kprobes.h>
-#include <linux/ktime.h>
-
-/* per-instance private data */
-struct my_data {
- ktime_t entry_stamp;
-};
-
-static const char *probed_func = "sys_open";
-
-/* Timestamp function entry. */
-static int entry_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
-{
- struct my_data *data;
-
- if(!current->mm)
- return 1; /* skip kernel threads */
-
- data = (struct my_data *)ri->data;
- data->entry_stamp = ktime_get();
- return 0;
-}
-
-/* If the probed function failed, log the return value and duration.
- * Duration may turn out to be zero consistently, depending upon the
- * granularity of time accounting on the platform. */
-static int return_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
-{
- int retval = regs_return_value(regs);
- struct my_data *data = (struct my_data *)ri->data;
- s64 delta;
- ktime_t now;
-
- if (retval < 0) {
- now = ktime_get();
- delta = ktime_to_ns(ktime_sub(now, data->entry_stamp));
- printk("%s: return val = %d (duration = %lld ns)\n",
- probed_func, retval, delta);
- }
- return 0;
-}
-
-static struct kretprobe my_kretprobe = {
- .handler = return_handler,
- .entry_handler = entry_handler,
- .data_size = sizeof(struct my_data),
- .maxactive = 20, /* probe up to 20 instances concurrently */
-};
-
-static int __init kretprobe_init(void)
-{
- int ret;
- my_kretprobe.kp.symbol_name = (char *)probed_func;
-
- if ((ret = register_kretprobe(&my_kretprobe)) < 0) {
- printk("register_kretprobe failed, returned %d\n", ret);
- return -1;
- }
- printk("Kretprobe active on %s\n", my_kretprobe.kp.symbol_name);
- return 0;
-}
-
-static void __exit kretprobe_exit(void)
-{
- unregister_kretprobe(&my_kretprobe);
- printk("kretprobe unregistered\n");
- /* nmissed > 0 suggests that maxactive was set too low. */
- printk("Missed probing %d instances of %s\n",
- my_kretprobe.nmissed, probed_func);
-}
-
-module_init(kretprobe_init)
-module_exit(kretprobe_exit)
-MODULE_LICENSE("GPL");
------ cut here -----
-
-Build and insert the kernel module as shown in the above kprobe
-example. You will see the trace data in /var/log/messages and on the
-console whenever sys_open() returns a negative value. (Some messages
-may be suppressed if syslogd is configured to eliminate duplicate
-messages.)
+See samples/kprobes/kretprobe_example.c
For additional information on Kprobes, refer to the following URLs:
http://www-106.ibm.com/developerworks/library/l-kprobes.html?ca=dgr-lnxw42Kprobe
unsigned int i, len = 0;
for (i = 0; args[i]; i++) {
+ if (i) {
+ strcat(dst+len, " ");
+ len++;
+ }
strcpy(dst+len, args[i]);
- strcat(dst+len, " ");
- len += strlen(args[i]) + 1;
+ len += strlen(args[i]);
}
/* In case it's empty. */
dst[len] = '\0';
The ID table is an array of struct pci_device_id entries ending with an
-all-zero entry. Each entry consists of:
+all-zero entry; use of the macro DEFINE_PCI_DEVICE_TABLE is the preferred
+method of declaring the table. Each entry consists of:
vendor,device Vendor and device ID to match (or PCI_ANY_ID)
o Do not mark the struct pci_driver.
- o The ID table array should be marked __devinitdata.
+ o The ID table array should be marked __devinitconst; this is done
+ automatically if the table is declared with DEFINE_PCI_DEVICE_TABLE().
o The probe() and remove() functions should be marked __devinit
and __devexit respectively. All initialization functions
/proc/<pid>/schedstat
----------------
-schedstats also adds a new /proc/<pid/schedstat file to include some of
+schedstats also adds a new /proc/<pid>/schedstat file to include some of
the same information on a per-process level. There are three fields in
this file correlating for that process to:
1) time spent on the cpu
** 8.replace pci_alloc_consistent()/pci_free_consistent() with kmalloc()/kfree() in arcmsr_iop_message_xfer()
** 9. fix the release of dma memory for type B in arcmsr_free_ccb_pool()
** 10.fix the arcmsr_polling_hbb_ccbdone()
+** 1.20.00.15 02/27/2008 Erich Chen & Nick Cheng
+** 1.arcmsr_iop_message_xfer() is called from atomic context under the
+** queuecommand scsi_host_template handler. James Bottomley pointed out
+** that the current GFP_KERNEL|GFP_DMA flags are wrong: firstly we are in
+** atomic context, secondly this memory is not used for DMA.
+** Also removed some unneeded casts. Thanks to Daniel Drake <dsd@gentoo.org>
**************************************************************************
usb-help.txt
-2000-July-12
+2008-Mar-7
For USB help other than the readme files that are located in
Documentation/usb/*, see the following:
Linux USB Guide: http://linux-usb.sourceforge.net
Linux-USB device overview (working devices and drivers):
http://www.qbik.ch/usb/devices/
-
-The Linux-USB mailing lists are:
- linux-usb-users@lists.sourceforge.net for general user help
- linux-usb-devel@lists.sourceforge.net for developer discussions
+
+The Linux-USB mailing list is at linux-usb@vger.kernel.org
###
Trying to find an issue in the dentry cache? Try
- slub_debug=,dentry_cache
+ slub_debug=,dentry
to only enable debugging on the dentry cache.
Red zoning and tracking may realign the slab. We can just apply sanity checks
to the dentry cache with
- slub_debug=F,dentry_cache
+ slub_debug=F,dentry
In case you forgot to enable debugging on the kernel command line: It is
possible to enable debugging manually when the kernel is up. Look at the
BLACKFIN ARCHITECTURE
P: Bryan Wu
-M: bryan.wu@analog.com
+M: cooloney@kernel.org
L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
W: http://blackfin.uclinux.org
S: Supported
BLACKFIN EMAC DRIVER
P: Bryan Wu
-M: bryan.wu@analog.com
+M: cooloney@kernel.org
L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
W: http://blackfin.uclinux.org
S: Supported
W: http://accessrunner.sourceforge.net/
S: Maintained
+CONTROL GROUPS (CGROUPS)
+P: Paul Menage
+M: menage@google.com
+L: containers@lists.linux-foundation.org
+S: Maintained
+
CORETEMP HARDWARE MONITORING DRIVER
P: Rudolf Marek
M: r.marek@assembler.cz
W: http://linux-fbdev.sourceforge.net/
S: Maintained
+FREESCALE DMA DRIVER
+P; Zhang Wei
+M: wei.zhang@freescale.com
+L: linuxppc-embedded@ozlabs.org
+L: linux-kernel@vger.kernel.org
+S: Maintained
+
FREESCALE SOC FS_ENET DRIVER
P: Pantelis Antoniou
M: pantelis.antoniou@gmail.com
S: Maintained
IPATH DRIVER:
-P: Arthur Jones
+P: Ralph Campbell
M: infinipath@qlogic.com
L: general@lists.openfabrics.org
T: git git://git.qlogic.com/ipath-linux-2.6
W: http://www.linux-mm.org
S: Maintained
+MEMORY RESOURCE CONTROLLER
+P: Balbir Singh
+M: balbir@linux.vnet.ibm.com
+P: Pavel Emelyanov
+M: xemul@openvz.org
+P: KAMEZAWA Hiroyuki
+M: kamezawa.hiroyu@jp.fujitsu.com
+L: linux-mm@kvack.org
+L: linux-kernel@vger.kernel.org
+S: Maintained
+
MEI MN10300/AM33 PORT
P: David Howells
M: dhowells@redhat.com
NETEFFECT IWARP RNIC DRIVER (IW_NES)
P: Faisal Latif
M: flatif@neteffect.com
+P: Nishi Gupta
+M: ngupta@neteffect.com
P: Glenn Streiff
M: gstreiff@neteffect.com
L: general@lists.openfabrics.org
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 25
-EXTRAVERSION = -rc3
+EXTRAVERSION = -rc5
NAME = Funky Weasel is Jiggy wit it
# *DOCUMENTATION*
for kernel debugging, non-intrusive instrumentation and testing.
If in doubt, say "N".
+config KRETPROBES
+ def_bool y
+ depends on KPROBES && HAVE_KRETPROBES
+
config HAVE_KPROBES
def_bool n
+
+config HAVE_KRETPROBES
+ def_bool n
#endif
#define DEBUG_NODIRECT 0
-#define DEBUG_FORCEDAC 0
#define ISA_DMA_MASK 0x00ffffff
return iommu_arena_new_node(0, hose, base, window_size, align);
}
+static inline int is_span_boundary(unsigned int index, unsigned int nr,
+ unsigned long shift,
+ unsigned long boundary_size)
+{
+ shift = (shift + index) & (boundary_size - 1);
+ return shift + nr > boundary_size;
+}
+
/* Must be called with the arena lock held */
static long
-iommu_arena_find_pages(struct pci_iommu_arena *arena, long n, long mask)
+iommu_arena_find_pages(struct device *dev, struct pci_iommu_arena *arena,
+ long n, long mask)
{
unsigned long *ptes;
long i, p, nent;
+ int pass = 0;
+ unsigned long base;
+ unsigned long boundary_size;
+
+ base = arena->dma_base >> PAGE_SHIFT;
+ if (dev) {
+ boundary_size = dma_get_seg_boundary(dev) + 1;
+ BUG_ON(!is_power_of_2(boundary_size));
+ boundary_size >>= PAGE_SHIFT;
+ } else {
+ boundary_size = 1UL << (32 - PAGE_SHIFT);
+ }
/* Search forward for the first mask-aligned sequence of N free ptes */
ptes = arena->ptes;
nent = arena->size >> PAGE_SHIFT;
- p = (arena->next_entry + mask) & ~mask;
+ p = ALIGN(arena->next_entry, mask + 1);
i = 0;
+
+again:
while (i < n && p+i < nent) {
+ if (!i && is_span_boundary(p, n, base, boundary_size)) {
+ p = ALIGN(p + 1, mask + 1);
+ goto again;
+ }
+
if (ptes[p+i])
- p = (p + i + 1 + mask) & ~mask, i = 0;
+ p = ALIGN(p + i + 1, mask + 1), i = 0;
else
i = i + 1;
}
if (i < n) {
- /* Reached the end. Flush the TLB and restart the
- search from the beginning. */
- alpha_mv.mv_pci_tbi(arena->hose, 0, -1);
-
- p = 0, i = 0;
- while (i < n && p+i < nent) {
- if (ptes[p+i])
- p = (p + i + 1 + mask) & ~mask, i = 0;
- else
- i = i + 1;
- }
-
- if (i < n)
+ if (pass < 1) {
+ /*
+ * Reached the end. Flush the TLB and restart
+ * the search from the beginning.
+ */
+ alpha_mv.mv_pci_tbi(arena->hose, 0, -1);
+
+ pass++;
+ p = 0;
+ i = 0;
+ goto again;
+ } else
return -1;
}
}
static long
-iommu_arena_alloc(struct pci_iommu_arena *arena, long n, unsigned int align)
+iommu_arena_alloc(struct device *dev, struct pci_iommu_arena *arena, long n,
+ unsigned int align)
{
unsigned long flags;
unsigned long *ptes;
/* Search for N empty ptes */
ptes = arena->ptes;
mask = max(align, arena->align_entry) - 1;
- p = iommu_arena_find_pages(arena, n, mask);
+ p = iommu_arena_find_pages(dev, arena, n, mask);
if (p < 0) {
spin_unlock_irqrestore(&arena->lock, flags);
return -1;
unsigned long paddr;
dma_addr_t ret;
unsigned int align = 0;
+ struct device *dev = pdev ? &pdev->dev : NULL;
paddr = __pa(cpu_addr);
/* Force allocation to 64KB boundary for ISA bridges. */
if (pdev && pdev == isa_bridge)
align = 8;
- dma_ofs = iommu_arena_alloc(arena, npages, align);
+ dma_ofs = iommu_arena_alloc(dev, arena, npages, align);
if (dma_ofs < 0) {
printk(KERN_WARNING "pci_map_single failed: "
"could not allocate dma page tables\n");
paddr &= ~PAGE_MASK;
npages = calc_npages(paddr + size);
- dma_ofs = iommu_arena_alloc(arena, npages, 0);
+ dma_ofs = iommu_arena_alloc(dev, arena, npages, 0);
if (dma_ofs < 0) {
/* If we attempted a direct map above but failed, die. */
if (leader->dma_address == 0)
/* Search for N empty ptes. */
ptes = arena->ptes;
- p = iommu_arena_find_pages(arena, pg_count, align_mask);
+ p = iommu_arena_find_pages(NULL, arena, pg_count, align_mask);
if (p < 0) {
spin_unlock_irqrestore(&arena->lock, flags);
return -1;
select SYS_SUPPORTS_APM_EMULATION
select HAVE_OPROFILE
select HAVE_KPROBES if (!XIP_KERNEL)
+ select HAVE_KRETPROBES if (HAVE_KPROBES)
help
The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and
config ATAGS_PROC
bool "Export atags in procfs"
- default n
+ depends on KEXEC
+ default y
help
Should the atags used to boot the kernel be exported in an "atags"
file in procfs. Useful with kexec.
#ifdef DEBUG
static unsigned int freq_debug;
-MODULE_PARM(freq_debug, "i");
+module_param(freq_debug, uint, 0);
MODULE_PARM_DESC(freq_debug, "Set the debug messages to on=1/off=0");
#else
#define freq_debug 0
{
unsigned long mask = 1ul << (clk->cken & 0x1f);
- local_irq_disable();
-
if (clk->cken < 32)
CKENA |= mask;
else
CKENB |= mask;
-
- local_irq_enable();
}
static void clk_pxa3xx_cken_disable(struct clk *clk)
{
unsigned long mask = 1ul << (clk->cken & 0x1f);
- local_irq_disable();
-
if (clk->cken < 32)
CKENA &= ~mask;
else
CKENB &= ~mask;
-
- local_irq_enable();
}
static const struct clkops clk_pxa3xx_cken_ops = {
.resource = smc91x_resources,
};
-#if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULES)
+#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static void zylonite_backlight_power(int on)
{
gpio_set_value(gpio_backlight, on);
*/
int valid_phys_addr_range(unsigned long addr, size_t size)
{
+ if (addr < PHYS_OFFSET)
+ return 0;
if (addr + size > __pa(high_memory))
return 0;
void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd)
{
pmd_t *pmd;
- struct page *pte;
+ pgtable_t pte;
if (!pgd)
return;
goto free;
}
- pte = pmd_page(*pmd);
+ pte = pmd_pgtable(*pmd);
pmd_clear(pmd);
- dec_zone_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
- pte_lock_deinit(pte);
pte_free(mm, pte);
pmd_free(mm, pmd);
free:
#ifdef CONFIG_BOARD_ATSTK100X_SPI1
at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
#endif
-#ifndef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
+#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
at32_add_device_mci(0);
#endif
at32_add_device_lcdc(0, &atstk1000_lcdc_data,
#include <linux/fs.h>
#include <linux/ptrace.h>
#include <linux/reboot.h>
+#include <linux/tick.h>
#include <linux/uaccess.h>
#include <linux/unistd.h>
{
/* endless idle loop with no priority at all */
while (1) {
+ tick_nohz_stop_sched_tick();
while (!need_resched())
cpu_idle_sleep();
+ tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
p->thread.cpu_context.ksp = (unsigned long)childregs;
p->thread.cpu_context.pc = (unsigned long)ret_from_fork;
+ clear_tsk_thread_flag(p, TIF_DEBUG);
if ((clone_flags & CLONE_PTRACE) && test_thread_flag(TIF_DEBUG))
ocd_enable(p);
page = sysreg_read(PTBR);
printk(KERN_ALERT "ptbr = %08lx", page);
+ if (address >= TASK_SIZE)
+ page = (unsigned long)swapper_pg_dir;
if (page) {
page = ((unsigned long *)page)[address >> 22];
printk(" pgd = %08lx", page);
# them changed. We use .mach to indicate when they were updated
# last, otherwise make uses the target directory mtime.
+ show_mach_symlink = :
+ quiet_show_mach_symlink = echo ' SYMLINK include/asm-$(ARCH)/mach-$(MACHINE) -> include/asm-$(ARCH)/mach'
+silent_show_mach_symlink = :
include/asm-blackfin/.mach: $(wildcard include/config/arch/*.h) include/config/auto.conf
- @echo ' SYMLINK include/asm-$(ARCH)/mach-$(MACHINE) -> include/asm-$(ARCH)/mach'
+ @$($(quiet)show_mach_symlink)
ifneq ($(KBUILD_SRC),)
$(Q)mkdir -p include/asm-$(ARCH)
$(Q)ln -fsn $(srctree)/include/asm-$(ARCH)/mach-$(MACHINE) include/asm-$(ARCH)/mach
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.22.14
-# Thu Nov 29 17:32:47 2007
+# Linux kernel version: 2.6.22.16
#
# CONFIG_MMU is not set
# CONFIG_FPU is not set
# Processor and Board Settings
#
# CONFIG_BF522 is not set
+# CONFIG_BF523 is not set
+# CONFIG_BF524 is not set
# CONFIG_BF525 is not set
+# CONFIG_BF526 is not set
CONFIG_BF527=y
# CONFIG_BF531 is not set
# CONFIG_BF532 is not set
# CONFIG_BFIN_WB is not set
CONFIG_BFIN_WT=y
CONFIG_L1_MAX_PIECE=16
+# CONFIG_MPU is not set
#
# Asynchonous Memory Configuration
# Power management options
#
# CONFIG_PM is not set
+# CONFIG_PM_WAKEUP_BY_GPIO is not set
#
# Networking
# CONFIG_MTD_CFI_INTELEXT is not set
# CONFIG_MTD_CFI_AMDSTD is not set
# CONFIG_MTD_CFI_STAA is not set
-CONFIG_MTD_MW320D=m
CONFIG_MTD_RAM=y
CONFIG_MTD_ROM=m
# CONFIG_MTD_ABSENT is not set
#
CONFIG_MTD_COMPLEX_MAPPINGS=y
# CONFIG_MTD_PHYSMAP is not set
-CONFIG_MTD_BF5xx=m
-CONFIG_BFIN_FLASH_SIZE=0x400000
-CONFIG_EBIU_FLASH_BASE=0x20000000
# CONFIG_MTD_UCLINUX is not set
# CONFIG_MTD_PLATRAM is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_UINPUT is not set
-# CONFIG_BF53X_PFBUTTONS is not set
# CONFIG_TWI_KEYPAD is not set
#
# CONFIG_BF5xx_PPIFCD is not set
# CONFIG_BFIN_SIMPLE_TIMER is not set
# CONFIG_BF5xx_PPI is not set
+CONFIG_BFIN_OTP=y
+# CONFIG_BFIN_OTP_WRITE_ENABLE is not set
# CONFIG_BFIN_SPORT is not set
# CONFIG_BFIN_TIMER_LATENCY is not set
# CONFIG_TWI_LCD is not set
# CONFIG_AD5304 is not set
-# CONFIG_BF5xx_TEA5764 is not set
-# CONFIG_BF5xx_FBDMA is not set
# CONFIG_VT is not set
# CONFIG_SERIAL_NONSTANDARD is not set
#
# I2C Hardware Bus support
#
-# CONFIG_I2C_BLACKFIN_GPIO is not set
CONFIG_I2C_BLACKFIN_TWI=m
CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ=50
# CONFIG_I2C_GPIO is not set
# CONFIG_PM_LEGACY is not set
# CONFIG_PM_DEBUG is not set
# CONFIG_PM_SYSFS_DEPRECATED is not set
-CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR=y
+CONFIG_PM_BFIN_SLEEP_DEEPER=y
+# CONFIG_PM_BFIN_SLEEP is not set
# CONFIG_PM_WAKEUP_BY_GPIO is not set
-# CONFIG_PM_WAKEUP_GPIO_API is not set
-CONFIG_PM_WAKEUP_SIC_IWR=0x80
#
# CPU Frequency scaling
# CONFIG_SERIAL_BFIN_PIO is not set
CONFIG_SERIAL_BFIN_UART0=y
# CONFIG_BFIN_UART0_CTSRTS is not set
-# CONFIG_SERIAL_BFIN_UART1 is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_BFIN_SPORT is not set
# CONFIG_PM_LEGACY is not set
# CONFIG_PM_DEBUG is not set
# CONFIG_PM_SYSFS_DEPRECATED is not set
-CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR=y
+CONFIG_PM_BFIN_SLEEP_DEEPER=y
+# CONFIG_PM_BFIN_SLEEP is not set
# CONFIG_PM_WAKEUP_BY_GPIO is not set
-# CONFIG_PM_WAKEUP_GPIO_API is not set
-CONFIG_PM_WAKEUP_SIC_IWR=0x80
#
# CPU Frequency scaling
# CONFIG_SERIAL_BFIN_PIO is not set
CONFIG_SERIAL_BFIN_UART0=y
# CONFIG_BFIN_UART0_CTSRTS is not set
-# CONFIG_SERIAL_BFIN_UART1 is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_BFIN_SPORT is not set
# CONFIG_PM_LEGACY is not set
# CONFIG_PM_DEBUG is not set
# CONFIG_PM_SYSFS_DEPRECATED is not set
-CONFIG_PM_WAKEUP_GPIO_BY_SIC_IWR=y
+CONFIG_PM_BFIN_SLEEP_DEEPER=y
+# CONFIG_PM_BFIN_SLEEP is not set
# CONFIG_PM_WAKEUP_BY_GPIO is not set
-# CONFIG_PM_WAKEUP_GPIO_API is not set
-CONFIG_PM_WAKEUP_SIC_IWR=0x8
#
# CPU Frequency scaling
CONFIG_SND_SOC_AC97_BUS=y
CONFIG_SND_SOC=m
CONFIG_SND_BF5XX_SOC=m
+CONFIG_SND_MMAP_SUPPORT=y
CONFIG_SND_BF5XX_SOC_AC97=m
# CONFIG_SND_BF5XX_SOC_WM8750 is not set
# CONFIG_SND_BF5XX_SOC_WM8731 is not set
# Power management options
#
# CONFIG_PM is not set
+# CONFIG_PM_WAKEUP_BY_GPIO is not set
#
# CPU Frequency scaling
CONFIG_SND_SOC_AC97_BUS=y
CONFIG_SND_SOC=y
CONFIG_SND_BF5XX_SOC=y
+CONFIG_SND_MMAP_SUPPORT=y
CONFIG_SND_BF5XX_SOC_AC97=y
CONFIG_SND_BF5XX_SOC_BF548_EZKIT=y
# CONFIG_SND_BF5XX_SOC_WM8750 is not set
# Power management options
#
# CONFIG_PM is not set
+# CONFIG_PM_WAKEUP_BY_GPIO is not set
#
# Networking
mutex_unlock(&(dma_ch[channel].dmalock));
#ifdef CONFIG_BF54x
- if (channel >= CH_UART2_RX && channel <= CH_UART3_TX &&
- strncmp(device_id, "BFIN_UART", 9) == 0)
- dma_ch[channel].regs->peripheral_map |=
- (channel - CH_UART2_RX + 0xC);
- else
- dma_ch[channel].regs->peripheral_map |=
- (channel - CH_UART2_RX + 0x6);
+ if (channel >= CH_UART2_RX && channel <= CH_UART3_TX) {
+ if (strncmp(device_id, "BFIN_UART", 9) == 0)
+ dma_ch[channel].regs->peripheral_map |=
+ (channel - CH_UART2_RX + 0xC);
+ else
+ dma_ch[channel].regs->peripheral_map |=
+ (channel - CH_UART2_RX + 0x6);
+ }
#endif
dma_ch[channel].device_id = device_id;
.align 16
/*
- * Atomic ior, 32 bit.
+ * Atomic and, 32 bit.
* Inputs: P0: memory address to use
- * R0: value to ior
+ * R0: value to and
* Outputs: R0: new contents of the memory address.
* R1: previous contents of the memory address.
*/
R0 = R1 & R0;
[P0] = R0;
rts;
-ENDPROC (_atomic_ior32)
+ENDPROC (_atomic_and32)
.align 16
/*
- * Atomic ior, 32 bit.
+ * Atomic xor, 32 bit.
* Inputs: P0: memory address to use
- * R0: value to ior
+ * R0: value to xor
* Outputs: R0: new contents of the memory address.
* R1: previous contents of the memory address.
*/
R0 = R1 ^ R0;
[P0] = R0;
rts;
-ENDPROC (_atomic_ior32)
+ENDPROC (_atomic_xor32)
.align 16
/*
/*
- * bfin_gptimers.c - derived from bf53x_timers.c
- * Driver for General Purpose Timer functions on the Blackfin processor
+ * gptimers.c - Blackfin General Purpose Timer core API
*
- * Copyright (C) 2005 John DeHority
- * Copyright (C) 2006 Hella Aglaia GmbH (awe@aglaia-gmbh.de)
+ * Copyright (c) 2005-2008 Analog Devices Inc.
+ * Copyright (C) 2005 John DeHority
+ * Copyright (C) 2006 Hella Aglaia GmbH (awe@aglaia-gmbh.de)
*
* Licensed under the GPLv2.
*/
static DEFINE_PER_CPU(struct cpu, cpu_devices);
u16 _bfin_swrst;
+EXPORT_SYMBOL(_bfin_swrst);
unsigned long memory_start, memory_end, physical_mem_end;
unsigned long reserved_mem_dcache_on;
printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
printk(KERN_INFO "Memory map:\n"
+ KERN_INFO " fixedcode = 0x%p-0x%p\n"
KERN_INFO " text = 0x%p-0x%p\n"
KERN_INFO " rodata = 0x%p-0x%p\n"
KERN_INFO " bss = 0x%p-0x%p\n"
#if DMA_UNCACHED_REGION > 0
KERN_INFO " DMA Zone = 0x%p-0x%p\n"
#endif
- , _stext, _etext,
+ , (void *)FIXED_CODE_START, (void *)FIXED_CODE_END,
+ _stext, _etext,
__start_rodata, __end_rodata,
__bss_start, __bss_stop,
_sdata, _edata,
__l1_lma_start = .;
+#if L1_CODE_LENGTH
+# define LDS_L1_CODE *(.l1.text)
+#else
+# define LDS_L1_CODE
+#endif
.text_l1 L1_CODE_START : AT(LOADADDR(.init.ramfs) + SIZEOF(.init.ramfs))
{
. = ALIGN(4);
__stext_l1 = .;
- *(.l1.text)
-
+ LDS_L1_CODE
. = ALIGN(4);
__etext_l1 = .;
}
+#if L1_DATA_A_LENGTH
+# define LDS_L1_A_DATA *(.l1.data)
+# define LDS_L1_A_BSS *(.l1.bss)
+# define LDS_L1_A_CACHE *(.data_l1.cacheline_aligned)
+#else
+# define LDS_L1_A_DATA
+# define LDS_L1_A_BSS
+# define LDS_L1_A_CACHE
+#endif
.data_l1 L1_DATA_A_START : AT(LOADADDR(.text_l1) + SIZEOF(.text_l1))
{
. = ALIGN(4);
__sdata_l1 = .;
- *(.l1.data)
+ LDS_L1_A_DATA
__edata_l1 = .;
. = ALIGN(4);
__sbss_l1 = .;
- *(.l1.bss)
+ LDS_L1_A_BSS
. = ALIGN(32);
- *(.data_l1.cacheline_aligned)
+ LDS_L1_A_CACHE
. = ALIGN(4);
__ebss_l1 = .;
}
+#if L1_DATA_B_LENGTH
+# define LDS_L1_B_DATA *(.l1.data.B)
+# define LDS_L1_B_BSS *(.l1.bss.B)
+#else
+# define LDS_L1_B_DATA
+# define LDS_L1_B_BSS
+#endif
.data_b_l1 L1_DATA_B_START : AT(LOADADDR(.data_l1) + SIZEOF(.data_l1))
{
. = ALIGN(4);
__sdata_b_l1 = .;
- *(.l1.data.B)
+ LDS_L1_B_DATA
__edata_b_l1 = .;
. = ALIGN(4);
__sbss_b_l1 = .;
- *(.l1.bss.B)
+ LDS_L1_B_BSS
. = ALIGN(4);
__ebss_b_l1 = .;
},
{
.name = "File System",
- .offset = 4 * SIZE_1M,
- .size = (256 - 4) * SIZE_1M,
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
},
};
}, {
.name = "kernel",
.size = 0xe0000,
- .offset = 0x20000
+ .offset = MTDPART_OFS_APPEND,
}, {
.name = "file system",
- .size = 0x700000,
- .offset = 0x00100000,
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
}
};
};
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
-static struct bfin5xx_spi_chip ad5304_chip_info = {
- .enable_dma = 0,
- .bits_per_word = 16,
-};
-#endif
-
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
static struct bfin5xx_spi_chip spi_ad7877_chip_info = {
.enable_dma = 0,
.mode = SPI_MODE_3,
},
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
- {
- .modalias = "ad5304_spi",
- .max_speed_hz = 1250000, /* max spi clock (SCK) speed in HZ */
- .bus_num = 0,
- .chip_select = 2,
- .platform_data = NULL,
- .controller_data = &ad5304_chip_info,
- .mode = SPI_MODE_2,
- },
-#endif
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
{
.modalias = "ad7877",
};
#endif
+static struct resource bfin_gpios_resources = {
+ .start = 0,
+ .end = MAX_BLACKFIN_GPIOS - 1,
+ .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+ .name = "simple-gpio",
+ .id = -1,
+ .num_resources = 1,
+ .resource = &bfin_gpios_resources,
+};
+
static struct platform_device *stamp_devices[] __initdata = {
#if defined(CONFIG_MTD_NAND_BF5XX) || defined(CONFIG_MTD_NAND_BF5XX_MODULE)
&bf5xx_nand_device,
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
&bfin_device_gpiokeys,
#endif
+
+ &bfin_gpios_device,
};
static int __init stamp_init(void)
bfin_gpio_reset_spi0_ssel1();
}
-/*
- * Currently the MAC address is saved in Flash by U-Boot
- */
-#define FLASH_MAC 0x203f0000
void bfin_get_ether_addr(char *addr)
{
- *(u32 *)(&(addr[0])) = bfin_read32(FLASH_MAC);
- *(u16 *)(&(addr[4])) = bfin_read16(FLASH_MAC + 4);
+ /* the MAC is stored in OTP memory page 0xDF */
+ u32 ret;
+ u64 otp_mac;
+ u32 (*otp_read)(u32 page, u32 flags, u64 *page_content) = (void *)0xEF00001A;
+
+ ret = otp_read(0xDF, 0x00, &otp_mac);
+ if (!(ret & 0x1)) {
+ char *otp_mac_p = (char *)&otp_mac;
+ for (ret = 0; ret < 6; ++ret)
+ addr[ret] = otp_mac_p[5 - ret];
+ }
}
EXPORT_SYMBOL(bfin_get_ether_addr);
}, {
.name = "kernel",
.size = 0xe0000,
- .offset = 0x20000
+ .offset = MTDPART_OFS_APPEND,
}, {
.name = "file system",
- .size = 0x700000,
- .offset = 0x00100000,
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
}
};
};
#endif
+static struct resource bfin_gpios_resources = {
+ .start = 0,
+ .end = MAX_BLACKFIN_GPIOS - 1,
+ .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+ .name = "simple-gpio",
+ .id = -1,
+ .num_resources = 1,
+ .resource = &bfin_gpios_resources,
+};
+
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
#include <linux/i2c-gpio.h>
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
&i2c_gpio_device,
#endif
+
+ &bfin_gpios_device,
};
static int __init ezkit_init(void)
static struct mtd_partition stamp_partitions[] = {
{
.name = "Bootloader",
- .size = 0x20000,
+ .size = 0x40000,
.offset = 0,
}, {
.name = "Kernel",
static struct mtd_partition bfin_spi_flash_partitions[] = {
{
.name = "bootloader",
- .size = 0x00020000,
+ .size = 0x00040000,
.offset = 0,
.mask_flags = MTD_CAP_ROM
}, {
.name = "kernel",
.size = 0xe0000,
- .offset = 0x20000
+ .offset = MTDPART_OFS_APPEND,
}, {
.name = "file system",
- .size = 0x700000,
- .offset = 0x00100000,
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
}
};
};
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
-static struct bfin5xx_spi_chip ad5304_chip_info = {
- .enable_dma = 0,
- .bits_per_word = 16,
-};
-#endif
-
#if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
static struct bfin5xx_spi_chip spi_mmc_chip_info = {
.enable_dma = 1,
},
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
- {
- .modalias = "ad5304_spi",
- .max_speed_hz = 1000000, /* max spi clock (SCK) speed in HZ */
- .bus_num = 0,
- .chip_select = 2,
- .platform_data = NULL,
- .controller_data = &ad5304_chip_info,
- .mode = SPI_MODE_2,
- },
-#endif
#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
{
.modalias = "spidev",
};
#endif
+static struct resource bfin_gpios_resources = {
+ .start = 0,
+ .end = MAX_BLACKFIN_GPIOS - 1,
+ .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+ .name = "simple-gpio",
+ .id = -1,
+ .num_resources = 1,
+ .resource = &bfin_gpios_resources,
+};
+
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
#include <linux/i2c-gpio.h>
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
&i2c_gpio_device,
#endif
+
+ &bfin_gpios_device,
&stamp_flash_device,
};
};
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
-static struct bfin5xx_spi_chip ad5304_chip_info = {
- .enable_dma = 0,
- .bits_per_word = 16,
-};
-#endif
-
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
static struct bfin5xx_spi_chip spi_ad7877_chip_info = {
.enable_dma = 0,
.mode = SPI_MODE_3,
},
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
- {
- .modalias = "ad5304_spi",
- .max_speed_hz = 1250000, /* max spi clock (SCK) speed in HZ */
- .bus_num = 0,
- .chip_select = 2,
- .platform_data = NULL,
- .controller_data = &ad5304_chip_info,
- .mode = SPI_MODE_2,
- },
-#endif
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
{
.modalias = "ad7877",
};
#endif
+static struct resource bfin_gpios_resources = {
+ .start = 0,
+ .end = MAX_BLACKFIN_GPIOS - 1,
+ .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+ .name = "simple-gpio",
+ .id = -1,
+ .num_resources = 1,
+ .resource = &bfin_gpios_resources,
+};
+
#if defined(CONFIG_BFIN_CFPCMCIA) || defined(CONFIG_BFIN_CFPCMCIA_MODULE)
static struct resource bfin_pcmcia_cf_resources[] = {
{
static struct mtd_partition stamp_partitions[] = {
{
.name = "Bootloader",
- .size = 0x20000,
+ .size = 0x40000,
.offset = 0,
}, {
.name = "Kernel",
.offset = MTDPART_OFS_APPEND,
}, {
.name = "RootFS",
- .size = 0x400000 - 0x20000 - 0xE0000 - 0x10000,
+ .size = 0x400000 - 0x40000 - 0xE0000 - 0x10000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "MAC Address",
static struct mtd_partition bfin_spi_flash_partitions[] = {
{
.name = "bootloader",
- .size = 0x00020000,
+ .size = 0x00040000,
.offset = 0,
.mask_flags = MTD_CAP_ROM
}, {
.name = "kernel",
.size = 0xe0000,
- .offset = 0x20000
+ .offset = MTDPART_OFS_APPEND,
}, {
.name = "file system",
- .size = 0x700000,
- .offset = 0x00100000,
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
}
};
};
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
-static struct bfin5xx_spi_chip ad5304_chip_info = {
- .enable_dma = 0,
- .bits_per_word = 16,
-};
-#endif
-
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
static struct bfin5xx_spi_chip spi_ad7877_chip_info = {
.enable_dma = 0,
.mode = SPI_MODE_3,
},
#endif
-#if defined(CONFIG_AD5304) || defined(CONFIG_AD5304_MODULE)
- {
- .modalias = "ad5304_spi",
- .max_speed_hz = 1250000, /* max spi clock (SCK) speed in HZ */
- .bus_num = 0,
- .chip_select = 2,
- .platform_data = NULL,
- .controller_data = &ad5304_chip_info,
- .mode = SPI_MODE_2,
- },
-#endif
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
{
.modalias = "ad7877",
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
&bfin_device_gpiokeys,
#endif
+
+ &bfin_gpios_device,
&stamp_flash_device,
};
},
{
.name = "File System",
- .offset = 4 * SIZE_1M,
- .size = (256 - 4) * SIZE_1M,
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
},
};
};
#endif
-#if defined(CONFIG_SDH_BFIN) || defined(CONFIG_SDH_BFIN)
+#if defined(CONFIG_SDH_BFIN) || defined(CONFIG_SDH_BFIN_MODULE)
static struct platform_device bf54x_sdh_device = {
.name = "bfin-sdh",
.id = 0,
static struct mtd_partition ezkit_partitions[] = {
{
.name = "Bootloader",
- .size = 0x20000,
+ .size = 0x40000,
.offset = 0,
}, {
.name = "Kernel",
.mask_flags = MTD_CAP_ROM
}, {
.name = "linux kernel",
- .size = 0x1c0000,
- .offset = 0x40000
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND,
}
};
};
#endif
+static struct resource bfin_gpios_resources = {
+ .start = 0,
+ .end = MAX_BLACKFIN_GPIOS - 1,
+ .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+ .name = "simple-gpio",
+ .id = -1,
+ .num_resources = 1,
+ .resource = &bfin_gpios_resources,
+};
+
static struct platform_device *ezkit_devices[] __initdata = {
#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
&rtc_device,
&bf5xx_nand_device,
#endif
-#if defined(CONFIG_SDH_BFIN) || defined(CONFIG_SDH_BFIN)
+#if defined(CONFIG_SDH_BFIN) || defined(CONFIG_SDH_BFIN_MODULE)
&bf54x_sdh_device,
#endif
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
&bfin_device_gpiokeys,
#endif
+
+ &bfin_gpios_device,
&ezkit_flash_device,
};
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <linux/module.h>
+
#include <asm/blackfin.h>
#include <asm/dma.h>
*/
#include <linux/linkage.h>
+#include <linux/init.h>
#include <asm/blackfin.h>
#include <asm/trace.h>
#if CONFIG_BFIN_KERNEL_CLOCK
#define INITIAL_STACK 0xFFB01000
-.text
+__INIT
ENTRY(__start)
-ENTRY(__stext)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
.LWAIT_HERE:
jump .LWAIT_HERE;
+ENDPROC(__start)
ENTRY(_real_start)
[ -- sp ] = reti;
call _start_kernel;
.L_exit:
jump.s .L_exit;
+ENDPROC(_real_start)
+
+__FINIT
.section .l1.text
#if CONFIG_BFIN_KERNEL_CLOCK
SSYNC;
RTS;
+ENDPROC(_start_dma_code)
#endif /* CONFIG_BFIN_KERNEL_CLOCK */
.data
static struct mtd_partition ezkit_partitions[] = {
{
.name = "Bootloader",
- .size = 0x20000,
+ .size = 0x40000,
.offset = 0,
}, {
.name = "Kernel",
};
#endif
+static struct resource bfin_gpios_resources = {
+ .start = 0,
+ .end = MAX_BLACKFIN_GPIOS - 1,
+ .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+ .name = "simple-gpio",
+ .id = -1,
+ .num_resources = 1,
+ .resource = &bfin_gpios_resources,
+};
+
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
#include <linux/i2c-gpio.h>
&isp1362_hcd_device,
#endif
+ &bfin_gpios_device,
&ezkit_flash_device,
};
#include <asm/blackfin.h>
#include <asm/mach/irq.h>
-.text
-
-ENTRY(_unmask_wdog_wakeup_evt)
- [--SP] = ( R7:0, P5:0 );
-#if defined(CONFIG_BF561)
- P0.H = hi(SICA_IWR1);
- P0.L = lo(SICA_IWR1);
-#elif defined(CONFIG_BF54x) || defined(CONFIG_BF52x)
- P0.h = HI(SIC_IWR0);
- P0.l = LO(SIC_IWR0);
-#else
- P0.h = HI(SIC_IWR);
- P0.l = LO(SIC_IWR);
-#endif
- R7 = [P0];
-#if defined(CONFIG_BF561)
- BITSET(R7, 27);
-#else
- BITSET(R7,(IRQ_WATCH - IVG7));
-#endif
- [P0] = R7;
- SSYNC;
-
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-.LWRITE_TO_STAT:
- /* When watch dog timer is enabled, a write to STAT will load the
- * contents of CNT to STAT
- */
- R7 = 0x0000(z);
-#if defined(CONFIG_BF561)
- P0.h = HI(WDOGA_STAT);
- P0.l = LO(WDOGA_STAT);
-#else
- P0.h = HI(WDOG_STAT);
- P0.l = LO(WDOG_STAT);
-#endif
- [P0] = R7;
- SSYNC;
- JUMP .LSKIP_WRITE_TO_STAT;
-
-ENTRY(_program_wdog_timer)
- [--SP] = ( R7:0, P5:0 );
-#if defined(CONFIG_BF561)
- P0.h = HI(WDOGA_CNT);
- P0.l = LO(WDOGA_CNT);
-#else
- P0.h = HI(WDOG_CNT);
- P0.l = LO(WDOG_CNT);
-#endif
- [P0] = R0;
- SSYNC;
-
-#if defined(CONFIG_BF561)
- P0.h = HI(WDOGA_CTL);
- P0.l = LO(WDOGA_CTL);
-#else
- P0.h = HI(WDOG_CTL);
- P0.l = LO(WDOG_CTL);
-#endif
- R7 = W[P0](Z);
- CC = BITTST(R7,1);
- if !CC JUMP .LWRITE_TO_STAT;
- CC = BITTST(R7,2);
- if !CC JUMP .LWRITE_TO_STAT;
-
-.LSKIP_WRITE_TO_STAT:
-#if defined(CONFIG_BF561)
- P0.h = HI(WDOGA_CTL);
- P0.l = LO(WDOGA_CTL);
-#else
- P0.h = HI(WDOG_CTL);
- P0.l = LO(WDOG_CTL);
-#endif
- R7 = W[P0](Z);
- BITCLR(R7,1); /* Enable GP event */
- BITSET(R7,2);
- W[P0] = R7.L;
- SSYNC;
- NOP;
-
- R7 = W[P0](Z);
- BITCLR(R7,4); /* Enable the wdog counter */
- W[P0] = R7.L;
- SSYNC;
-
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-ENTRY(_clear_wdog_wakeup_evt)
- [--SP] = ( R7:0, P5:0 );
-
-#if defined(CONFIG_BF561)
- P0.h = HI(WDOGA_CTL);
- P0.l = LO(WDOGA_CTL);
-#else
- P0.h = HI(WDOG_CTL);
- P0.l = LO(WDOG_CTL);
-#endif
- R7 = 0x0AD6(Z);
- W[P0] = R7.L;
- SSYNC;
-
- R7 = W[P0](Z);
- BITSET(R7,15);
- W[P0] = R7.L;
- SSYNC;
-
- R7 = W[P0](Z);
- BITSET(R7,1);
- BITSET(R7,2);
- W[P0] = R7.L;
- SSYNC;
-
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-ENTRY(_disable_wdog_timer)
- [--SP] = ( R7:0, P5:0 );
-#if defined(CONFIG_BF561)
- P0.h = HI(WDOGA_CTL);
- P0.l = LO(WDOGA_CTL);
-#else
- P0.h = HI(WDOG_CTL);
- P0.l = LO(WDOG_CTL);
-#endif
- R7 = 0xAD6(Z);
- W[P0] = R7.L;
- SSYNC;
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-#if !defined(CONFIG_BF561)
.section .l1.text
RTS;
ENTRY(_set_rtc_istat)
+#ifndef CONFIG_BF561
P0.H = hi(RTC_ISTAT);
P0.L = lo(RTC_ISTAT);
w[P0] = R0.L;
SSYNC;
+#endif
RTS;
ENTRY(_test_pll_locked)
CC = BITTST(R0,5);
IF !CC JUMP 1b;
RTS;
-#endif
.long _sys_epoll_pwait
.long _sys_utimensat
.long _sys_signalfd
- .long _sys_ni_syscall
+ .long _sys_timerfd_create
.long _sys_eventfd /* 350 */
.long _sys_pread64
.long _sys_pwrite64
.long _sys_get_robust_list /* 355 */
.long _sys_fallocate
.long _sys_semtimedop
+ .long _sys_timerfd_settime
+ .long _sys_timerfd_gettime
+
.rept NR_syscalls-(.-_sys_call_table)/4
.long _sys_ni_syscall
.endr
#endif
struct ivgx {
- /* irq number for request_irq, available in mach-bf533/irq.h */
+ /* irq number for request_irq, available in mach-bf5xx/irq.h */
unsigned int irqno;
/* corresponding bit in the SIC_ISR register */
unsigned int isrflag;
struct ivgx *istop;
} ivg7_13[IVG13 - IVG7 + 1];
-static void search_IAR(void);
/*
* Search SIC_IAR and fill tables with the irqvalues
}
/*
- * This is for BF533 internal IRQs
+ * This is for core internal IRQs
*/
-static void ack_noop(unsigned int irq)
+static void bfin_ack_noop(unsigned int irq)
{
/* Dummy function. */
}
{
#ifdef CONFIG_BF53x
bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
- ~(1 << (irq - (IRQ_CORETMR + 1))));
+ ~(1 << SIC_SYSIRQ(irq)));
#else
unsigned mask_bank, mask_bit;
- mask_bank = (irq - (IRQ_CORETMR + 1)) / 32;
- mask_bit = (irq - (IRQ_CORETMR + 1)) % 32;
+ mask_bank = SIC_SYSIRQ(irq) / 32;
+ mask_bit = SIC_SYSIRQ(irq) % 32;
bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) &
~(1 << mask_bit));
#endif
{
#ifdef CONFIG_BF53x
bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() |
- (1 << (irq - (IRQ_CORETMR + 1))));
+ (1 << SIC_SYSIRQ(irq)));
#else
unsigned mask_bank, mask_bit;
- mask_bank = (irq - (IRQ_CORETMR + 1)) / 32;
- mask_bit = (irq - (IRQ_CORETMR + 1)) % 32;
+ mask_bank = SIC_SYSIRQ(irq) / 32;
+ mask_bit = SIC_SYSIRQ(irq) % 32;
bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) |
(1 << mask_bit));
#endif
{
unsigned bank, bit;
unsigned long flags;
- bank = (irq - (IRQ_CORETMR + 1)) / 32;
- bit = (irq - (IRQ_CORETMR + 1)) % 32;
+ bank = SIC_SYSIRQ(irq) / 32;
+ bit = SIC_SYSIRQ(irq) % 32;
local_irq_save(flags);
#endif
static struct irq_chip bfin_core_irqchip = {
- .ack = ack_noop,
+ .ack = bfin_ack_noop,
.mask = bfin_core_mask_irq,
.unmask = bfin_core_unmask_irq,
};
static struct irq_chip bfin_internal_irqchip = {
- .ack = ack_noop,
+ .ack = bfin_ack_noop,
.mask = bfin_internal_mask_irq,
.unmask = bfin_internal_unmask_irq,
+ .mask_ack = bfin_internal_mask_irq,
+ .disable = bfin_internal_mask_irq,
+ .enable = bfin_internal_unmask_irq,
#ifdef CONFIG_PM
.set_wake = bfin_internal_set_wake,
#endif
#ifdef BF537_GENERIC_ERROR_INT_DEMUX
static int error_int_mask;
-static void bfin_generic_error_ack_irq(unsigned int irq)
-{
-
-}
-
static void bfin_generic_error_mask_irq(unsigned int irq)
{
error_int_mask &= ~(1L << (irq - IRQ_PPI_ERROR));
- if (!error_int_mask) {
- local_irq_disable();
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
- ~(1 << (IRQ_GENERIC_ERROR -
- (IRQ_CORETMR + 1))));
- SSYNC();
- local_irq_enable();
- }
+ if (!error_int_mask)
+ bfin_internal_mask_irq(IRQ_GENERIC_ERROR);
}
static void bfin_generic_error_unmask_irq(unsigned int irq)
{
- local_irq_disable();
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() | 1 <<
- (IRQ_GENERIC_ERROR - (IRQ_CORETMR + 1)));
- SSYNC();
- local_irq_enable();
-
+ bfin_internal_unmask_irq(IRQ_GENERIC_ERROR);
error_int_mask |= 1L << (irq - IRQ_PPI_ERROR);
}
static struct irq_chip bfin_generic_error_irqchip = {
- .ack = bfin_generic_error_ack_irq,
+ .ack = bfin_ack_noop,
+ .mask_ack = bfin_generic_error_mask_irq,
.mask = bfin_generic_error_mask_irq,
.unmask = bfin_generic_error_unmask_irq,
};
(struct pin_int_t *)PINT3_MASK_SET,
};
-unsigned short get_irq_base(u8 bank, u8 bmap)
+inline unsigned short get_irq_base(u8 bank, u8 bmap)
{
u16 irq_base;
#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
bfin_write_SIC_IMASK0(SIC_UNMASK_ALL);
bfin_write_SIC_IMASK1(SIC_UNMASK_ALL);
- bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
- bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
# ifdef CONFIG_BF54x
bfin_write_SIC_IMASK2(SIC_UNMASK_ALL);
- bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
# endif
#else
bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
- bfin_write_SIC_IWR(IWR_ENABLE_ALL);
#endif
- SSYNC();
local_irq_disable();
set_irq_chip(irq, &bfin_core_irqchip);
else
set_irq_chip(irq, &bfin_internal_irqchip);
-#ifdef BF537_GENERIC_ERROR_INT_DEMUX
- if (irq != IRQ_GENERIC_ERROR) {
-#endif
- switch (irq) {
+ switch (irq) {
#if defined(CONFIG_BF53x)
- case IRQ_PROG_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
+ case IRQ_PROG_INTA:
# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
- case IRQ_MAC_RX:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
+ case IRQ_MAC_RX:
# endif
#elif defined(CONFIG_BF54x)
- case IRQ_PINT0:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PINT1:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PINT2:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PINT3:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
+ case IRQ_PINT0:
+ case IRQ_PINT1:
+ case IRQ_PINT2:
+ case IRQ_PINT3:
#elif defined(CONFIG_BF52x)
- case IRQ_PORTF_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PORTG_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PORTH_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
+ case IRQ_PORTF_INTA:
+ case IRQ_PORTG_INTA:
+ case IRQ_PORTH_INTA:
#elif defined(CONFIG_BF561)
- case IRQ_PROG0_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PROG1_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
- case IRQ_PROG2_INTA:
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- break;
+ case IRQ_PROG0_INTA:
+ case IRQ_PROG1_INTA:
+ case IRQ_PROG2_INTA:
#endif
- default:
- set_irq_handler(irq, handle_simple_irq);
- break;
- }
-
+ set_irq_chained_handler(irq,
+ bfin_demux_gpio_irq);
+ break;
#ifdef BF537_GENERIC_ERROR_INT_DEMUX
- } else {
+ case IRQ_GENERIC_ERROR:
set_irq_handler(irq, bfin_demux_error_irq);
- }
+
+ break;
#endif
+ default:
+ set_irq_handler(irq, handle_simple_irq);
+ break;
+ }
}
+
#ifdef BF537_GENERIC_ERROR_INT_DEMUX
- for (irq = IRQ_PPI_ERROR; irq <= IRQ_UART1_ERROR; irq++) {
- set_irq_chip(irq, &bfin_generic_error_irqchip);
- set_irq_handler(irq, handle_level_irq);
- }
+ for (irq = IRQ_PPI_ERROR; irq <= IRQ_UART1_ERROR; irq++)
+ set_irq_chip_and_handler(irq, &bfin_generic_error_irqchip,
+ handle_level_irq);
#endif
- for (irq = GPIO_IRQ_BASE; irq < NR_IRQS; irq++) {
+ /* if configured as edge, then will be changed to do_edge_IRQ */
+ for (irq = GPIO_IRQ_BASE; irq < NR_IRQS; irq++)
+ set_irq_chip_and_handler(irq, &bfin_gpio_irqchip,
+ handle_level_irq);
- set_irq_chip(irq, &bfin_gpio_irqchip);
- /* if configured as edge, then will be changed to do_edge_IRQ */
- set_irq_handler(irq, handle_level_irq);
- }
bfin_write_IMASK(0);
CSYNC();
IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
+#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
+ bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
+ bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
+# ifdef CONFIG_BF54x
+ bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
+# endif
+#else
+ bfin_write_SIC_IWR(IWR_ENABLE_ALL);
+#endif
+
return 0;
}
#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
unsigned long sic_status[3];
- SSYNC();
sic_status[0] = bfin_read_SIC_ISR0() & bfin_read_SIC_IMASK0();
sic_status[1] = bfin_read_SIC_ISR1() & bfin_read_SIC_IMASK1();
#ifdef CONFIG_BF54x
}
#else
unsigned long sic_status;
- SSYNC();
+
sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR();
for (;; ivg++) {
}
}
-static __init void free_init_pages(const char *what, unsigned long begin, unsigned long end)
+static void __init free_init_pages(const char *what, unsigned long begin, unsigned long end)
{
unsigned long addr;
/* next to check that the page we free is not a partial page */
}
#endif
-void __init free_initmem(void)
+void __init_refok free_initmem(void)
{
#if defined CONFIG_RAMKERNEL && !defined CONFIG_MPU
free_init_pages("unused kernel memory",
#include <linux/swap.h>
#include <linux/sched.h>
#include <linux/init.h>
-#include <linux/vmstat.h>
+#include <linux/mm.h>
#include <asm/arch/svinto.h>
#include <asm/types.h>
#include <asm/signal.h>
-/*#************************************************************************#*/
-/*#-------------------------------------------------------------------------*/
-/*# */
-/*# FUNCTION NAME: memcpy() */
-/*# */
-/*# PARAMETERS: void* dst; Destination address. */
-/*# void* src; Source address. */
-/*# int len; Number of bytes to copy. */
-/*# */
-/*# RETURNS: dst. */
-/*# */
-/*# DESCRIPTION: Copies len bytes of memory from src to dst. No guarantees */
-/*# about copying of overlapping memory areas. This routine is */
-/*# very sensitive to compiler changes in register allocation. */
-/*# Should really be rewritten to avoid this problem. */
-/*# */
-/*#-------------------------------------------------------------------------*/
-/*# */
-/*# HISTORY */
-/*# */
-/*# DATE NAME CHANGES */
-/*# ---- ---- ------- */
-/*# 941007 Kenny R Creation */
-/*# 941011 Kenny R Lots of optimizations and inlining. */
-/*# 941129 Ulf A Adapted for use in libc. */
-/*# 950216 HP N==0 forgotten if non-aligned src/dst. */
-/*# Added some optimizations. */
-/*# 001025 HP Make src and dst char *. Align dst to */
-/*# dword, not just word-if-both-src-and-dst- */
-/*# are-misaligned. */
-/*# */
-/*#-------------------------------------------------------------------------*/
-
-#include <linux/types.h>
-
-void *memcpy(void *pdst,
- const void *psrc,
- size_t pn)
+/* A memcpy for CRIS.
+ Copyright (C) 1994-2005 Axis Communications.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ 2. Neither the name of Axis Communications nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS
+ ``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 AXIS
+ COMMUNICATIONS OR ITS CONTRIBUTORS 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. */
+
+/* FIXME: This file should really only be used for reference, as the
+ result is somewhat depending on gcc generating what we expect rather
+ than what we describe. An assembly file should be used instead. */
+
+#include <stddef.h>
+
+/* Break even between movem and move16 is really at 38.7 * 2, but
+ modulo 44, so up to the next multiple of 44, we use ordinary code. */
+#define MEMCPY_BY_BLOCK_THRESHOLD (44 * 2)
+
+/* No name ambiguities in this file. */
+__asm__ (".syntax no_register_prefix");
+
+void *
+memcpy(void *pdst, const void *psrc, size_t pn)
{
- /* Ok. Now we want the parameters put in special registers.
+ /* Now we want the parameters put in special registers.
Make sure the compiler is able to make something useful of this.
- As it is now: r10 -> r13; r11 -> r11 (nop); r12 -> r12 (nop).
+ As it is now: r10 -> r13; r11 -> r11 (nop); r12 -> r12 (nop).
- If gcc was alright, it really would need no temporaries, and no
- stack space to save stuff on. */
+ If gcc was allright, it really would need no temporaries, and no
+ stack space to save stuff on. */
register void *return_dst __asm__ ("r10") = pdst;
- register char *dst __asm__ ("r13") = pdst;
- register const char *src __asm__ ("r11") = psrc;
+ register unsigned char *dst __asm__ ("r13") = pdst;
+ register unsigned const char *src __asm__ ("r11") = psrc;
register int n __asm__ ("r12") = pn;
-
-
+
/* When src is aligned but not dst, this makes a few extra needless
cycles. I believe it would take as many to check that the
re-alignment was unnecessary. */
&& n >= 3)
{
if ((unsigned long) dst & 1)
- {
- n--;
- *(char*)dst = *(char*)src;
- src++;
- dst++;
- }
+ {
+ n--;
+ *dst = *src;
+ src++;
+ dst++;
+ }
if ((unsigned long) dst & 2)
- {
- n -= 2;
- *(short*)dst = *(short*)src;
- src += 2;
- dst += 2;
- }
+ {
+ n -= 2;
+ *(short *) dst = *(short *) src;
+ src += 2;
+ dst += 2;
+ }
}
- /* Decide which copying method to use. */
- if (n >= 44*2) /* Break even between movem and
- move16 is at 38.7*2, but modulo 44. */
- {
- /* For large copies we use 'movem' */
-
- /* It is not optimal to tell the compiler about clobbering any
- registers; that will move the saving/restoring of those registers
- to the function prologue/epilogue, and make non-movem sizes
- suboptimal.
-
- This method is not foolproof; it assumes that the "asm reg"
- declarations at the beginning of the function really are used
- here (beware: they may be moved to temporary registers).
- This way, we do not have to save/move the registers around into
- temporaries; we can safely use them straight away.
-
- If you want to check that the allocation was right; then
- check the equalities in the first comment. It should say
- "r13=r13, r11=r11, r12=r12" */
- __asm__ volatile ("\n\
- ;; Check that the following is true (same register names on \n\
- ;; both sides of equal sign, as in r8=r8): \n\
- ;; %0=r13, %1=r11, %2=r12 \n\
- ;; \n\
- ;; Save the registers we'll use in the movem process \n\
- ;; on the stack. \n\
- subq 11*4,$sp \n\
- movem $r10,[$sp] \n\
+ /* Decide which copying method to use. */
+ if (n >= MEMCPY_BY_BLOCK_THRESHOLD)
+ {
+ /* It is not optimal to tell the compiler about clobbering any
+ registers; that will move the saving/restoring of those registers
+ to the function prologue/epilogue, and make non-movem sizes
+ suboptimal. */
+ __asm__ volatile
+ ("\
+ ;; GCC does promise correct register allocations, but let's \n\
+ ;; make sure it keeps its promises. \n\
+ .ifnc %0-%1-%2,$r13-$r11-$r12 \n\
+ .error \"GCC reg alloc bug: %0-%1-%4 != $r13-$r12-$r11\" \n\
+ .endif \n\
+ \n\
+ ;; Save the registers we'll use in the movem process \n\
+ ;; on the stack. \n\
+ subq 11*4,sp \n\
+ movem r10,[sp] \n\
\n\
- ;; Now we've got this: \n\
- ;; r11 - src \n\
- ;; r13 - dst \n\
- ;; r12 - n \n\
+ ;; Now we've got this: \n\
+ ;; r11 - src \n\
+ ;; r13 - dst \n\
+ ;; r12 - n \n\
\n\
- ;; Update n for the first loop \n\
- subq 44,$r12 \n\
+ ;; Update n for the first loop. \n\
+ subq 44,r12 \n\
0: \n\
- movem [$r11+],$r10 \n\
- subq 44,$r12 \n\
- bge 0b \n\
- movem $r10,[$r13+] \n\
+"
+#ifdef __arch_common_v10_v32
+ /* Cater to branch offset difference between v32 and v10. We
+ assume the branch below has an 8-bit offset. */
+" setf\n"
+#endif
+" movem [r11+],r10 \n\
+ subq 44,r12 \n\
+ bge 0b \n\
+ movem r10,[r13+] \n\
\n\
- addq 44,$r12 ;; compensate for last loop underflowing n \n\
+ ;; Compensate for last loop underflowing n. \n\
+ addq 44,r12 \n\
\n\
- ;; Restore registers from stack \n\
- movem [$sp+],$r10"
+ ;; Restore registers from stack. \n\
+ movem [sp+],r10"
- /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n)
- /* Inputs */ : "0" (dst), "1" (src), "2" (n));
-
- }
+ /* Outputs. */
+ : "=r" (dst), "=r" (src), "=r" (n)
- /* Either we directly starts copying, using dword copying
- in a loop, or we copy as much as possible with 'movem'
- and then the last block (<44 bytes) is copied here.
- This will work since 'movem' will have updated src,dst,n. */
+ /* Inputs. */
+ : "0" (dst), "1" (src), "2" (n));
+ }
- while ( n >= 16 )
- {
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- n -= 16;
- }
+ while (n >= 16)
+ {
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+
+ n -= 16;
+ }
- /* A switch() is definitely the fastest although it takes a LOT of code.
- * Particularly if you inline code this.
- */
switch (n)
- {
+ {
case 0:
break;
+
case 1:
- *(char*)dst = *(char*)src;
+ *dst = *src;
break;
+
case 2:
- *(short*)dst = *(short*)src;
+ *(short *) dst = *(short *) src;
break;
+
case 3:
- *((short*)dst)++ = *((short*)src)++;
- *(char*)dst = *(char*)src;
+ *(short *) dst = *(short *) src; dst += 2; src += 2;
+ *dst = *src;
break;
+
case 4:
- *((long*)dst)++ = *((long*)src)++;
+ *(long *) dst = *(long *) src;
break;
+
case 5:
- *((long*)dst)++ = *((long*)src)++;
- *(char*)dst = *(char*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *dst = *src;
break;
+
case 6:
- *((long*)dst)++ = *((long*)src)++;
- *(short*)dst = *(short*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(short *) dst = *(short *) src;
break;
+
case 7:
- *((long*)dst)++ = *((long*)src)++;
- *((short*)dst)++ = *((short*)src)++;
- *(char*)dst = *(char*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(short *) dst = *(short *) src; dst += 2; src += 2;
+ *dst = *src;
break;
+
case 8:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src;
break;
+
case 9:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *(char*)dst = *(char*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *dst = *src;
break;
+
case 10:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *(short*)dst = *(short*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(short *) dst = *(short *) src;
break;
+
case 11:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((short*)dst)++ = *((short*)src)++;
- *(char*)dst = *(char*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(short *) dst = *(short *) src; dst += 2; src += 2;
+ *dst = *src;
break;
+
case 12:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src;
break;
+
case 13:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *(char*)dst = *(char*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *dst = *src;
break;
+
case 14:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *(short*)dst = *(short*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(short *) dst = *(short *) src;
break;
+
case 15:
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((long*)dst)++ = *((long*)src)++;
- *((short*)dst)++ = *((short*)src)++;
- *(char*)dst = *(char*)src;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(long *) dst = *(long *) src; dst += 4; src += 4;
+ *(short *) dst = *(short *) src; dst += 2; src += 2;
+ *dst = *src;
break;
- }
+ }
- return return_dst; /* destination pointer. */
-} /* memcpy() */
+ return return_dst;
+}
Code Review / linux-3.10.git / commitdiff