mirror of https://gitee.com/openkylin/linux.git
merge nfs bugfixes into nfsd for-3.19 branch
In addition to nfsd bugfixes, there are some fixes in -rc5 for client bugs that can interfere with my testing.
This commit is contained in:
J. Bruce Fields
commit
56429e9b3b
|
|
@ -20,4 +20,4 @@ Date: November 2007
|
|||
Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
|
||||
Description: The /sys/firmware/ibft/ethernetX directory will contain
|
||||
files that expose the iSCSI Boot Firmware Table NIC data.
|
||||
This can this can the IP address, MAC, and gateway of the NIC.
|
||||
Usually this contains the IP address, MAC, and gateway of the NIC.
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ GENFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(MEDIA_TEMP))
|
|||
PHONY += cleanmediadocs
|
||||
|
||||
cleanmediadocs:
|
||||
-@rm `find $(MEDIA_OBJ_DIR) -type l` $(GENFILES) $(OBJIMGFILES) 2>/dev/null
|
||||
-@rm -f `find $(MEDIA_OBJ_DIR) -type l` $(GENFILES) $(OBJIMGFILES) 2>/dev/null
|
||||
|
||||
$(obj)/media_api.xml: $(GENFILES) FORCE
|
||||
|
||||
|
|
|
|||
|
|
@ -2566,6 +2566,10 @@ fields changed from _s32 to _u32.
|
|||
<para>Added compound control types and &VIDIOC-QUERY-EXT-CTRL;.
|
||||
</para>
|
||||
</listitem>
|
||||
</orderedlist>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>V4L2 in Linux 3.18</title>
|
||||
<orderedlist>
|
||||
<listitem>
|
||||
|
|
|
|||
|
|
@ -324,7 +324,6 @@ tree, they need to be integration-tested. For this purpose, a special
|
|||
testing repository exists into which virtually all subsystem trees are
|
||||
pulled on an almost daily basis:
|
||||
http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git
|
||||
http://linux.f-seidel.de/linux-next/pmwiki/
|
||||
|
||||
This way, the -next kernel gives a summary outlook onto what will be
|
||||
expected to go into the mainline kernel at the next merge period.
|
||||
|
|
|
|||
|
|
@ -483,12 +483,10 @@ have been included in the discussion
|
|||
|
||||
14) Using Reported-by:, Tested-by:, Reviewed-by:, Suggested-by: and Fixes:
|
||||
|
||||
If this patch fixes a problem reported by somebody else, consider adding a
|
||||
Reported-by: tag to credit the reporter for their contribution. Please
|
||||
note that this tag should not be added without the reporter's permission,
|
||||
especially if the problem was not reported in a public forum. That said,
|
||||
if we diligently credit our bug reporters, they will, hopefully, be
|
||||
inspired to help us again in the future.
|
||||
The Reported-by tag gives credit to people who find bugs and report them and it
|
||||
hopefully inspires them to help us again in the future. Please note that if
|
||||
the bug was reported in private, then ask for permission first before using the
|
||||
Reported-by tag.
|
||||
|
||||
A Tested-by: tag indicates that the patch has been successfully tested (in
|
||||
some environment) by the person named. This tag informs maintainers that
|
||||
|
|
|
|||
|
|
@ -17,7 +17,7 @@ User addresses have bits 63:48 set to 0 while the kernel addresses have
|
|||
the same bits set to 1. TTBRx selection is given by bit 63 of the
|
||||
virtual address. The swapper_pg_dir contains only kernel (global)
|
||||
mappings while the user pgd contains only user (non-global) mappings.
|
||||
The swapper_pgd_dir address is written to TTBR1 and never written to
|
||||
The swapper_pg_dir address is written to TTBR1 and never written to
|
||||
TTBR0.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -289,10 +289,6 @@ lists when they are assembled; they can be downloaded from:
|
|||
|
||||
http://www.kernel.org/pub/linux/kernel/next/
|
||||
|
||||
Some information about linux-next has been gathered at:
|
||||
|
||||
http://linux.f-seidel.de/linux-next/pmwiki/
|
||||
|
||||
Linux-next has become an integral part of the kernel development process;
|
||||
all patches merged during a given merge window should really have found
|
||||
their way into linux-next some time before the merge window opens.
|
||||
|
|
|
|||
|
|
@ -22,10 +22,6 @@ Beyond that, a valuable resource for kernel developers is:
|
|||
|
||||
http://kernelnewbies.org/
|
||||
|
||||
Information about the linux-next tree gathers at:
|
||||
|
||||
http://linux.f-seidel.de/linux-next/pmwiki/
|
||||
|
||||
And, of course, one should not forget http://kernel.org/, the definitive
|
||||
location for kernel release information.
|
||||
|
||||
|
|
|
|||
|
|
@ -3,8 +3,10 @@
|
|||
Required properties:
|
||||
- compatible : should contain one of the following:
|
||||
- "renesas,sata-r8a7779" for R-Car H1
|
||||
- "renesas,sata-r8a7790" for R-Car H2
|
||||
- "renesas,sata-r8a7791" for R-Car M2
|
||||
- "renesas,sata-r8a7790-es1" for R-Car H2 ES1
|
||||
- "renesas,sata-r8a7790" for R-Car H2 other than ES1
|
||||
- "renesas,sata-r8a7791" for R-Car M2-W
|
||||
- "renesas,sata-r8a7793" for R-Car M2-N
|
||||
- reg : address and length of the SATA registers;
|
||||
- interrupts : must consist of one interrupt specifier.
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,38 @@
|
|||
* Generic Mailbox Controller and client driver bindings
|
||||
|
||||
Generic binding to provide a way for Mailbox controller drivers to
|
||||
assign appropriate mailbox channel to client drivers.
|
||||
|
||||
* Mailbox Controller
|
||||
|
||||
Required property:
|
||||
- #mbox-cells: Must be at least 1. Number of cells in a mailbox
|
||||
specifier.
|
||||
|
||||
Example:
|
||||
mailbox: mailbox {
|
||||
...
|
||||
#mbox-cells = <1>;
|
||||
};
|
||||
|
||||
|
||||
* Mailbox Client
|
||||
|
||||
Required property:
|
||||
- mboxes: List of phandle and mailbox channel specifiers.
|
||||
|
||||
Optional property:
|
||||
- mbox-names: List of identifier strings for each mailbox channel
|
||||
required by the client. The use of this property
|
||||
is discouraged in favor of using index in list of
|
||||
'mboxes' while requesting a mailbox. Instead the
|
||||
platforms may define channel indices, in DT headers,
|
||||
to something legible.
|
||||
|
||||
Example:
|
||||
pwr_cntrl: power {
|
||||
...
|
||||
mbox-names = "pwr-ctrl", "rpc";
|
||||
mboxes = <&mailbox 0
|
||||
&mailbox 1>;
|
||||
};
|
||||
|
|
@ -11,3 +11,5 @@ Optional properties:
|
|||
are supported on the device. Valid value for SMSC LAN91c111 are
|
||||
1, 2 or 4. If it's omitted or invalid, the size would be 2 meaning
|
||||
16-bit access only.
|
||||
- power-gpios: GPIO to control the PWRDWN pin
|
||||
- reset-gpios: GPIO to control the RESET pin
|
||||
|
|
|
|||
|
|
@ -1,5 +1,20 @@
|
|||
Freescale FlexTimer Module (FTM) PWM controller
|
||||
|
||||
The same FTM PWM device can have a different endianness on different SoCs. The
|
||||
device tree provides a property to describing this so that an operating system
|
||||
device driver can handle all variants of the device. Refer to the table below
|
||||
for the endianness of the FTM PWM block as integrated into the existing SoCs:
|
||||
|
||||
SoC | FTM-PWM endianness
|
||||
--------+-------------------
|
||||
Vybrid | LE
|
||||
LS1 | BE
|
||||
LS2 | LE
|
||||
|
||||
Please see ../regmap/regmap.txt for more detail about how to specify endian
|
||||
modes in device tree.
|
||||
|
||||
|
||||
Required properties:
|
||||
- compatible: Should be "fsl,vf610-ftm-pwm".
|
||||
- reg: Physical base address and length of the controller's registers
|
||||
|
|
@ -16,7 +31,8 @@ Required properties:
|
|||
- pinctrl-names: Must contain a "default" entry.
|
||||
- pinctrl-NNN: One property must exist for each entry in pinctrl-names.
|
||||
See pinctrl/pinctrl-bindings.txt for details of the property values.
|
||||
|
||||
- big-endian: Boolean property, required if the FTM PWM registers use a big-
|
||||
endian rather than little-endian layout.
|
||||
|
||||
Example:
|
||||
|
||||
|
|
@ -32,4 +48,5 @@ pwm0: pwm@40038000 {
|
|||
<&clks VF610_CLK_FTM0_EXT_FIX_EN>;
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&pinctrl_pwm0_1>;
|
||||
big-endian;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -7,8 +7,8 @@ Required properties:
|
|||
"rockchip,vop-pwm": found integrated in VOP on RK3288 SoC
|
||||
- reg: physical base address and length of the controller's registers
|
||||
- clocks: phandle and clock specifier of the PWM reference clock
|
||||
- #pwm-cells: should be 2. See pwm.txt in this directory for a
|
||||
description of the cell format.
|
||||
- #pwm-cells: must be 2 (rk2928) or 3 (rk3288). See pwm.txt in this directory
|
||||
for a description of the cell format.
|
||||
|
||||
Example:
|
||||
|
||||
|
|
|
|||
|
|
@ -7,10 +7,20 @@ Required properties:
|
|||
|
||||
- clocks : the clock provider of SYS_MCLK
|
||||
|
||||
- VDDA-supply : the regulator provider of VDDA
|
||||
|
||||
- VDDIO-supply: the regulator provider of VDDIO
|
||||
|
||||
Optional properties:
|
||||
|
||||
- VDDD-supply : the regulator provider of VDDD
|
||||
|
||||
Example:
|
||||
|
||||
codec: sgtl5000@0a {
|
||||
compatible = "fsl,sgtl5000";
|
||||
reg = <0x0a>;
|
||||
clocks = <&clks 150>;
|
||||
VDDA-supply = <®_3p3v>;
|
||||
VDDIO-supply = <®_3p3v>;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -12,6 +12,9 @@ I. For patch submitters
|
|||
|
||||
devicetree@vger.kernel.org
|
||||
|
||||
3) The Documentation/ portion of the patch should come in the series before
|
||||
the code implementing the binding.
|
||||
|
||||
II. For kernel maintainers
|
||||
|
||||
1) If you aren't comfortable reviewing a given binding, reply to it and ask
|
||||
|
|
|
|||
|
|
@ -1,7 +1,10 @@
|
|||
* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
|
||||
|
||||
Required properties:
|
||||
- compatible : "fsl,imx6q-thermal"
|
||||
- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX.
|
||||
i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
|
||||
when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
|
||||
is higher than panic threshold, system will auto reboot by SRC module.
|
||||
- fsl,tempmon : phandle pointer to system controller that contains TEMPMON
|
||||
control registers, e.g. ANATOP on imx6q.
|
||||
- fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON
|
||||
|
|
|
|||
|
|
@ -7,7 +7,10 @@ Required properties:
|
|||
- "renesas,thermal-r8a73a4" (R-Mobile AP6)
|
||||
- "renesas,thermal-r8a7779" (R-Car H1)
|
||||
- "renesas,thermal-r8a7790" (R-Car H2)
|
||||
- "renesas,thermal-r8a7791" (R-Car M2)
|
||||
- "renesas,thermal-r8a7791" (R-Car M2-W)
|
||||
- "renesas,thermal-r8a7792" (R-Car V2H)
|
||||
- "renesas,thermal-r8a7793" (R-Car M2-N)
|
||||
- "renesas,thermal-r8a7794" (R-Car E2)
|
||||
- reg : Address range of the thermal registers.
|
||||
The 1st reg will be recognized as common register
|
||||
if it has "interrupts".
|
||||
|
|
|
|||
|
|
@ -0,0 +1,24 @@
|
|||
Zynq Watchdog Device Tree Bindings
|
||||
-------------------------------------------
|
||||
|
||||
Required properties:
|
||||
- compatible : Should be "cdns,wdt-r1p2".
|
||||
- clocks : This is pclk (APB clock).
|
||||
- interrupts : This is wd_irq - watchdog timeout interrupt.
|
||||
- interrupt-parent : Must be core interrupt controller.
|
||||
|
||||
Optional properties
|
||||
- reset-on-timeout : If this property exists, then a reset is done
|
||||
when watchdog times out.
|
||||
- timeout-sec : Watchdog timeout value (in seconds).
|
||||
|
||||
Example:
|
||||
watchdog@f8005000 {
|
||||
compatible = "cdns,wdt-r1p2";
|
||||
clocks = <&clkc 45>;
|
||||
interrupt-parent = <&intc>;
|
||||
interrupts = <0 9 1>;
|
||||
reg = <0xf8005000 0x1000>;
|
||||
reset-on-timeout;
|
||||
timeout-sec = <10>;
|
||||
};
|
||||
|
|
@ -7,7 +7,8 @@ Required properties:
|
|||
|
||||
Optional property:
|
||||
- big-endian: If present the watchdog device's registers are implemented
|
||||
in big endian mode, otherwise in little mode.
|
||||
in big endian mode, otherwise in native mode(same with CPU), for more
|
||||
detail please see: Documentation/devicetree/bindings/regmap/regmap.txt.
|
||||
|
||||
Examples:
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,13 @@
|
|||
Meson SoCs Watchdog timer
|
||||
|
||||
Required properties:
|
||||
|
||||
- compatible : should be "amlogic,meson6-wdt"
|
||||
- reg : Specifies base physical address and size of the registers.
|
||||
|
||||
Example:
|
||||
|
||||
wdt: watchdog@c1109900 {
|
||||
compatible = "amlogic,meson6-wdt";
|
||||
reg = <0xc1109900 0x8>;
|
||||
};
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
Qualcomm Krait Processor Sub-system (KPSS) Watchdog
|
||||
---------------------------------------------------
|
||||
|
||||
Required properties :
|
||||
- compatible : shall contain only one of the following:
|
||||
|
||||
"qcom,kpss-wdt-msm8960"
|
||||
"qcom,kpss-wdt-apq8064"
|
||||
"qcom,kpss-wdt-ipq8064"
|
||||
|
||||
- reg : shall contain base register location and length
|
||||
- clocks : shall contain the input clock
|
||||
|
||||
Optional properties :
|
||||
- timeout-sec : shall contain the default watchdog timeout in seconds,
|
||||
if unset, the default timeout is 30 seconds
|
||||
|
||||
Example:
|
||||
watchdog@208a038 {
|
||||
compatible = "qcom,kpss-wdt-ipq8064";
|
||||
reg = <0x0208a038 0x40>;
|
||||
clocks = <&sleep_clk>;
|
||||
timeout-sec = <10>;
|
||||
};
|
||||
|
|
@ -9,6 +9,7 @@ Required properties:
|
|||
(a) "samsung,s3c2410-wdt" for Exynos4 and previous SoCs
|
||||
(b) "samsung,exynos5250-wdt" for Exynos5250
|
||||
(c) "samsung,exynos5420-wdt" for Exynos5420
|
||||
(c) "samsung,exynos7-wdt" for Exynos7
|
||||
|
||||
- reg : base physical address of the controller and length of memory mapped
|
||||
region.
|
||||
|
|
|
|||
|
|
@ -67,6 +67,7 @@ prototypes:
|
|||
struct file *, unsigned open_flag,
|
||||
umode_t create_mode, int *opened);
|
||||
int (*tmpfile) (struct inode *, struct dentry *, umode_t);
|
||||
int (*dentry_open)(struct dentry *, struct file *, const struct cred *);
|
||||
|
||||
locking rules:
|
||||
all may block
|
||||
|
|
@ -96,6 +97,7 @@ fiemap: no
|
|||
update_time: no
|
||||
atomic_open: yes
|
||||
tmpfile: no
|
||||
dentry_open: no
|
||||
|
||||
Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
|
||||
victim.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,198 @@
|
|||
Written by: Neil Brown <neilb@suse.de>
|
||||
|
||||
Overlay Filesystem
|
||||
==================
|
||||
|
||||
This document describes a prototype for a new approach to providing
|
||||
overlay-filesystem functionality in Linux (sometimes referred to as
|
||||
union-filesystems). An overlay-filesystem tries to present a
|
||||
filesystem which is the result over overlaying one filesystem on top
|
||||
of the other.
|
||||
|
||||
The result will inevitably fail to look exactly like a normal
|
||||
filesystem for various technical reasons. The expectation is that
|
||||
many use cases will be able to ignore these differences.
|
||||
|
||||
This approach is 'hybrid' because the objects that appear in the
|
||||
filesystem do not all appear to belong to that filesystem. In many
|
||||
cases an object accessed in the union will be indistinguishable
|
||||
from accessing the corresponding object from the original filesystem.
|
||||
This is most obvious from the 'st_dev' field returned by stat(2).
|
||||
|
||||
While directories will report an st_dev from the overlay-filesystem,
|
||||
all non-directory objects will report an st_dev from the lower or
|
||||
upper filesystem that is providing the object. Similarly st_ino will
|
||||
only be unique when combined with st_dev, and both of these can change
|
||||
over the lifetime of a non-directory object. Many applications and
|
||||
tools ignore these values and will not be affected.
|
||||
|
||||
Upper and Lower
|
||||
---------------
|
||||
|
||||
An overlay filesystem combines two filesystems - an 'upper' filesystem
|
||||
and a 'lower' filesystem. When a name exists in both filesystems, the
|
||||
object in the 'upper' filesystem is visible while the object in the
|
||||
'lower' filesystem is either hidden or, in the case of directories,
|
||||
merged with the 'upper' object.
|
||||
|
||||
It would be more correct to refer to an upper and lower 'directory
|
||||
tree' rather than 'filesystem' as it is quite possible for both
|
||||
directory trees to be in the same filesystem and there is no
|
||||
requirement that the root of a filesystem be given for either upper or
|
||||
lower.
|
||||
|
||||
The lower filesystem can be any filesystem supported by Linux and does
|
||||
not need to be writable. The lower filesystem can even be another
|
||||
overlayfs. The upper filesystem will normally be writable and if it
|
||||
is it must support the creation of trusted.* extended attributes, and
|
||||
must provide valid d_type in readdir responses, so NFS is not suitable.
|
||||
|
||||
A read-only overlay of two read-only filesystems may use any
|
||||
filesystem type.
|
||||
|
||||
Directories
|
||||
-----------
|
||||
|
||||
Overlaying mainly involves directories. If a given name appears in both
|
||||
upper and lower filesystems and refers to a non-directory in either,
|
||||
then the lower object is hidden - the name refers only to the upper
|
||||
object.
|
||||
|
||||
Where both upper and lower objects are directories, a merged directory
|
||||
is formed.
|
||||
|
||||
At mount time, the two directories given as mount options "lowerdir" and
|
||||
"upperdir" are combined into a merged directory:
|
||||
|
||||
mount -t overlayfs overlayfs -olowerdir=/lower,upperdir=/upper,\
|
||||
workdir=/work /merged
|
||||
|
||||
The "workdir" needs to be an empty directory on the same filesystem
|
||||
as upperdir.
|
||||
|
||||
Then whenever a lookup is requested in such a merged directory, the
|
||||
lookup is performed in each actual directory and the combined result
|
||||
is cached in the dentry belonging to the overlay filesystem. If both
|
||||
actual lookups find directories, both are stored and a merged
|
||||
directory is created, otherwise only one is stored: the upper if it
|
||||
exists, else the lower.
|
||||
|
||||
Only the lists of names from directories are merged. Other content
|
||||
such as metadata and extended attributes are reported for the upper
|
||||
directory only. These attributes of the lower directory are hidden.
|
||||
|
||||
whiteouts and opaque directories
|
||||
--------------------------------
|
||||
|
||||
In order to support rm and rmdir without changing the lower
|
||||
filesystem, an overlay filesystem needs to record in the upper filesystem
|
||||
that files have been removed. This is done using whiteouts and opaque
|
||||
directories (non-directories are always opaque).
|
||||
|
||||
A whiteout is created as a character device with 0/0 device number.
|
||||
When a whiteout is found in the upper level of a merged directory, any
|
||||
matching name in the lower level is ignored, and the whiteout itself
|
||||
is also hidden.
|
||||
|
||||
A directory is made opaque by setting the xattr "trusted.overlay.opaque"
|
||||
to "y". Where the upper filesystem contains an opaque directory, any
|
||||
directory in the lower filesystem with the same name is ignored.
|
||||
|
||||
readdir
|
||||
-------
|
||||
|
||||
When a 'readdir' request is made on a merged directory, the upper and
|
||||
lower directories are each read and the name lists merged in the
|
||||
obvious way (upper is read first, then lower - entries that already
|
||||
exist are not re-added). This merged name list is cached in the
|
||||
'struct file' and so remains as long as the file is kept open. If the
|
||||
directory is opened and read by two processes at the same time, they
|
||||
will each have separate caches. A seekdir to the start of the
|
||||
directory (offset 0) followed by a readdir will cause the cache to be
|
||||
discarded and rebuilt.
|
||||
|
||||
This means that changes to the merged directory do not appear while a
|
||||
directory is being read. This is unlikely to be noticed by many
|
||||
programs.
|
||||
|
||||
seek offsets are assigned sequentially when the directories are read.
|
||||
Thus if
|
||||
- read part of a directory
|
||||
- remember an offset, and close the directory
|
||||
- re-open the directory some time later
|
||||
- seek to the remembered offset
|
||||
|
||||
there may be little correlation between the old and new locations in
|
||||
the list of filenames, particularly if anything has changed in the
|
||||
directory.
|
||||
|
||||
Readdir on directories that are not merged is simply handled by the
|
||||
underlying directory (upper or lower).
|
||||
|
||||
|
||||
Non-directories
|
||||
---------------
|
||||
|
||||
Objects that are not directories (files, symlinks, device-special
|
||||
files etc.) are presented either from the upper or lower filesystem as
|
||||
appropriate. When a file in the lower filesystem is accessed in a way
|
||||
the requires write-access, such as opening for write access, changing
|
||||
some metadata etc., the file is first copied from the lower filesystem
|
||||
to the upper filesystem (copy_up). Note that creating a hard-link
|
||||
also requires copy_up, though of course creation of a symlink does
|
||||
not.
|
||||
|
||||
The copy_up may turn out to be unnecessary, for example if the file is
|
||||
opened for read-write but the data is not modified.
|
||||
|
||||
The copy_up process first makes sure that the containing directory
|
||||
exists in the upper filesystem - creating it and any parents as
|
||||
necessary. It then creates the object with the same metadata (owner,
|
||||
mode, mtime, symlink-target etc.) and then if the object is a file, the
|
||||
data is copied from the lower to the upper filesystem. Finally any
|
||||
extended attributes are copied up.
|
||||
|
||||
Once the copy_up is complete, the overlay filesystem simply
|
||||
provides direct access to the newly created file in the upper
|
||||
filesystem - future operations on the file are barely noticed by the
|
||||
overlay filesystem (though an operation on the name of the file such as
|
||||
rename or unlink will of course be noticed and handled).
|
||||
|
||||
|
||||
Non-standard behavior
|
||||
---------------------
|
||||
|
||||
The copy_up operation essentially creates a new, identical file and
|
||||
moves it over to the old name. The new file may be on a different
|
||||
filesystem, so both st_dev and st_ino of the file may change.
|
||||
|
||||
Any open files referring to this inode will access the old data and
|
||||
metadata. Similarly any file locks obtained before copy_up will not
|
||||
apply to the copied up file.
|
||||
|
||||
On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and
|
||||
fsetxattr(2) will fail with EROFS.
|
||||
|
||||
If a file with multiple hard links is copied up, then this will
|
||||
"break" the link. Changes will not be propagated to other names
|
||||
referring to the same inode.
|
||||
|
||||
Symlinks in /proc/PID/ and /proc/PID/fd which point to a non-directory
|
||||
object in overlayfs will not contain valid absolute paths, only
|
||||
relative paths leading up to the filesystem's root. This will be
|
||||
fixed in the future.
|
||||
|
||||
Some operations are not atomic, for example a crash during copy_up or
|
||||
rename will leave the filesystem in an inconsistent state. This will
|
||||
be addressed in the future.
|
||||
|
||||
Changes to underlying filesystems
|
||||
---------------------------------
|
||||
|
||||
Offline changes, when the overlay is not mounted, are allowed to either
|
||||
the upper or the lower trees.
|
||||
|
||||
Changes to the underlying filesystems while part of a mounted overlay
|
||||
filesystem are not allowed. If the underlying filesystem is changed,
|
||||
the behavior of the overlay is undefined, though it will not result in
|
||||
a crash or deadlock.
|
||||
|
|
@ -364,6 +364,7 @@ struct inode_operations {
|
|||
int (*atomic_open)(struct inode *, struct dentry *, struct file *,
|
||||
unsigned open_flag, umode_t create_mode, int *opened);
|
||||
int (*tmpfile) (struct inode *, struct dentry *, umode_t);
|
||||
int (*dentry_open)(struct dentry *, struct file *, const struct cred *);
|
||||
};
|
||||
|
||||
Again, all methods are called without any locks being held, unless
|
||||
|
|
@ -696,6 +697,12 @@ struct address_space_operations {
|
|||
but instead uses bmap to find out where the blocks in the file
|
||||
are and uses those addresses directly.
|
||||
|
||||
dentry_open: *WARNING: probably going away soon, do not use!* This is an
|
||||
alternative to f_op->open(), the difference is that this method may open
|
||||
a file not necessarily originating from the same filesystem as the one
|
||||
i_op->open() was called on. It may be useful for stacking filesystems
|
||||
which want to allow native I/O directly on underlying files.
|
||||
|
||||
|
||||
invalidatepage: If a page has PagePrivate set, then invalidatepage
|
||||
will be called when part or all of the page is to be removed
|
||||
|
|
|
|||
|
|
@ -38,22 +38,38 @@ Contents
|
|||
7.2.1 Status packet
|
||||
7.2.2 Head packet
|
||||
7.2.3 Motion packet
|
||||
8. Trackpoint (for Hardware version 3 and 4)
|
||||
8.1 Registers
|
||||
8.2 Native relative mode 6 byte packet format
|
||||
8.2.1 Status Packet
|
||||
|
||||
|
||||
|
||||
1. Introduction
|
||||
~~~~~~~~~~~~
|
||||
|
||||
Currently the Linux Elantech touchpad driver is aware of two different
|
||||
hardware versions unimaginatively called version 1 and version 2. Version 1
|
||||
is found in "older" laptops and uses 4 bytes per packet. Version 2 seems to
|
||||
be introduced with the EeePC and uses 6 bytes per packet, and provides
|
||||
additional features such as position of two fingers, and width of the touch.
|
||||
Currently the Linux Elantech touchpad driver is aware of four different
|
||||
hardware versions unimaginatively called version 1,version 2, version 3
|
||||
and version 4. Version 1 is found in "older" laptops and uses 4 bytes per
|
||||
packet. Version 2 seems to be introduced with the EeePC and uses 6 bytes
|
||||
per packet, and provides additional features such as position of two fingers,
|
||||
and width of the touch. Hardware version 3 uses 6 bytes per packet (and
|
||||
for 2 fingers the concatenation of two 6 bytes packets) and allows tracking
|
||||
of up to 3 fingers. Hardware version 4 uses 6 bytes per packet, and can
|
||||
combine a status packet with multiple head or motion packets. Hardware version
|
||||
4 allows tracking up to 5 fingers.
|
||||
|
||||
Some Hardware version 3 and version 4 also have a trackpoint which uses a
|
||||
separate packet format. It is also 6 bytes per packet.
|
||||
|
||||
The driver tries to support both hardware versions and should be compatible
|
||||
with the Xorg Synaptics touchpad driver and its graphical configuration
|
||||
utilities.
|
||||
|
||||
Note that a mouse button is also associated with either the touchpad or the
|
||||
trackpoint when a trackpoint is available. Disabling the Touchpad in xorg
|
||||
(TouchPadOff=0) will also disable the buttons associated with the touchpad.
|
||||
|
||||
Additionally the operation of the touchpad can be altered by adjusting the
|
||||
contents of some of its internal registers. These registers are represented
|
||||
by the driver as sysfs entries under /sys/bus/serio/drivers/psmouse/serio?
|
||||
|
|
@ -78,7 +94,7 @@ completeness sake.
|
|||
2. Extra knobs
|
||||
~~~~~~~~~~~
|
||||
|
||||
Currently the Linux Elantech touchpad driver provides two extra knobs under
|
||||
Currently the Linux Elantech touchpad driver provides three extra knobs under
|
||||
/sys/bus/serio/drivers/psmouse/serio? for the user.
|
||||
|
||||
* debug
|
||||
|
|
@ -112,6 +128,20 @@ Currently the Linux Elantech touchpad driver provides two extra knobs under
|
|||
data consistency checking can be done. For now checking is disabled by
|
||||
default. Currently even turning it on will do nothing.
|
||||
|
||||
* crc_enabled
|
||||
|
||||
Sets crc_enabled to 0/1. The name "crc_enabled" is the official name of
|
||||
this integrity check, even though it is not an actual cyclic redundancy
|
||||
check.
|
||||
|
||||
Depending on the state of crc_enabled, certain basic data integrity
|
||||
verification is done by the driver on hardware version 3 and 4. The
|
||||
driver will reject any packet that appears corrupted. Using this knob,
|
||||
The state of crc_enabled can be altered with this knob.
|
||||
|
||||
Reading the crc_enabled value will show the active value. Echoing
|
||||
"0" or "1" to this file will set the state to "0" or "1".
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
3. Differentiating hardware versions
|
||||
|
|
@ -746,3 +776,42 @@ byte 5:
|
|||
|
||||
byte 0 ~ 2 for one finger
|
||||
byte 3 ~ 5 for another
|
||||
|
||||
|
||||
8. Trackpoint (for Hardware version 3 and 4)
|
||||
=========================================
|
||||
8.1 Registers
|
||||
~~~~~~~~~
|
||||
No special registers have been identified.
|
||||
|
||||
8.2 Native relative mode 6 byte packet format
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
8.2.1 Status Packet
|
||||
~~~~~~~~~~~~~
|
||||
|
||||
byte 0:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
0 0 sx sy 0 M R L
|
||||
byte 1:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
~sx 0 0 0 0 0 0 0
|
||||
byte 2:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
~sy 0 0 0 0 0 0 0
|
||||
byte 3:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
0 0 ~sy ~sx 0 1 1 0
|
||||
byte 4:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
x7 x6 x5 x4 x3 x2 x1 x0
|
||||
byte 5:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
y7 y6 y5 y4 y3 y2 y1 y0
|
||||
|
||||
|
||||
x and y are written in two's complement spread
|
||||
over 9 bits with sx/sy the relative top bit and
|
||||
x7..x0 and y7..y0 the lower bits.
|
||||
~sx is the inverse of sx, ~sy is the inverse of sy.
|
||||
The sign of y is opposite to what the input driver
|
||||
expects for a relative movement
|
||||
|
|
|
|||
|
|
@ -1015,10 +1015,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
Format: {"off" | "on" | "skip[mbr]"}
|
||||
|
||||
efi= [EFI]
|
||||
Format: { "old_map" }
|
||||
Format: { "old_map", "nochunk", "noruntime" }
|
||||
old_map [X86-64]: switch to the old ioremap-based EFI
|
||||
runtime services mapping. 32-bit still uses this one by
|
||||
default.
|
||||
nochunk: disable reading files in "chunks" in the EFI
|
||||
boot stub, as chunking can cause problems with some
|
||||
firmware implementations.
|
||||
noruntime : disable EFI runtime services support
|
||||
|
||||
efi_no_storage_paranoia [EFI; X86]
|
||||
Using this parameter you can use more than 50% of
|
||||
|
|
@ -1260,7 +1264,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
i8042.noloop [HW] Disable the AUX Loopback command while probing
|
||||
for the AUX port
|
||||
i8042.nomux [HW] Don't check presence of an active multiplexing
|
||||
controller. Default: true.
|
||||
controller
|
||||
i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX
|
||||
controllers
|
||||
i8042.notimeout [HW] Ignore timeout condition signalled by controller
|
||||
|
|
@ -1303,6 +1307,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
.cdrom .chs .ignore_cable are additional options
|
||||
See Documentation/ide/ide.txt.
|
||||
|
||||
ide-generic.probe-mask= [HW] (E)IDE subsystem
|
||||
Format: <int>
|
||||
Probe mask for legacy ISA IDE ports. Depending on
|
||||
platform up to 6 ports are supported, enabled by
|
||||
setting corresponding bits in the mask to 1. The
|
||||
default value is 0x0, which has a special meaning.
|
||||
On systems that have PCI, it triggers scanning the
|
||||
PCI bus for the first and the second port, which
|
||||
are then probed. On systems without PCI the value
|
||||
of 0x0 enables probing the two first ports as if it
|
||||
was 0x3.
|
||||
|
||||
ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
|
||||
Claim all unknown PCI IDE storage controllers.
|
||||
|
||||
|
|
@ -1583,6 +1599,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
kmemleak= [KNL] Boot-time kmemleak enable/disable
|
||||
Valid arguments: on, off
|
||||
Default: on
|
||||
Built with CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y,
|
||||
the default is off.
|
||||
|
||||
kmemcheck= [X86] Boot-time kmemcheck enable/disable/one-shot mode
|
||||
Valid arguments: 0, 1, 2
|
||||
|
|
@ -2232,7 +2250,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
|
||||
nodsp [SH] Disable hardware DSP at boot time.
|
||||
|
||||
noefi [X86] Disable EFI runtime services support.
|
||||
noefi Disable EFI runtime services support.
|
||||
|
||||
noexec [IA-64]
|
||||
|
||||
|
|
@ -3465,6 +3483,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
e.g. base its process migration decisions on it.
|
||||
Default is on.
|
||||
|
||||
topology_updates= [KNL, PPC, NUMA]
|
||||
Format: {off}
|
||||
Specify if the kernel should ignore (off)
|
||||
topology updates sent by the hypervisor to this
|
||||
LPAR.
|
||||
|
||||
tp720= [HW,PS2]
|
||||
|
||||
tpm_suspend_pcr=[HW,TPM]
|
||||
|
|
@ -3597,7 +3621,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
|
|||
|
||||
usb-storage.delay_use=
|
||||
[UMS] The delay in seconds before a new device is
|
||||
scanned for Logical Units (default 5).
|
||||
scanned for Logical Units (default 1).
|
||||
|
||||
usb-storage.quirks=
|
||||
[UMS] A list of quirks entries to supplement or
|
||||
|
|
|
|||
|
|
@ -62,6 +62,10 @@ Memory may be allocated or freed before kmemleak is initialised and
|
|||
these actions are stored in an early log buffer. The size of this buffer
|
||||
is configured via the CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE option.
|
||||
|
||||
If CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF are enabled, the kmemleak is
|
||||
disabled by default. Passing "kmemleak=on" on the kernel command
|
||||
line enables the function.
|
||||
|
||||
Basic Algorithm
|
||||
---------------
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,122 @@
|
|||
The Common Mailbox Framework
|
||||
Jassi Brar <jaswinder.singh@linaro.org>
|
||||
|
||||
This document aims to help developers write client and controller
|
||||
drivers for the API. But before we start, let us note that the
|
||||
client (especially) and controller drivers are likely going to be
|
||||
very platform specific because the remote firmware is likely to be
|
||||
proprietary and implement non-standard protocol. So even if two
|
||||
platforms employ, say, PL320 controller, the client drivers can't
|
||||
be shared across them. Even the PL320 driver might need to accommodate
|
||||
some platform specific quirks. So the API is meant mainly to avoid
|
||||
similar copies of code written for each platform. Having said that,
|
||||
nothing prevents the remote f/w to also be Linux based and use the
|
||||
same api there. However none of that helps us locally because we only
|
||||
ever deal at client's protocol level.
|
||||
Some of the choices made during implementation are the result of this
|
||||
peculiarity of this "common" framework.
|
||||
|
||||
|
||||
|
||||
Part 1 - Controller Driver (See include/linux/mailbox_controller.h)
|
||||
|
||||
Allocate mbox_controller and the array of mbox_chan.
|
||||
Populate mbox_chan_ops, except peek_data() all are mandatory.
|
||||
The controller driver might know a message has been consumed
|
||||
by the remote by getting an IRQ or polling some hardware flag
|
||||
or it can never know (the client knows by way of the protocol).
|
||||
The method in order of preference is IRQ -> Poll -> None, which
|
||||
the controller driver should set via 'txdone_irq' or 'txdone_poll'
|
||||
or neither.
|
||||
|
||||
|
||||
Part 2 - Client Driver (See include/linux/mailbox_client.h)
|
||||
|
||||
The client might want to operate in blocking mode (synchronously
|
||||
send a message through before returning) or non-blocking/async mode (submit
|
||||
a message and a callback function to the API and return immediately).
|
||||
|
||||
|
||||
struct demo_client {
|
||||
struct mbox_client cl;
|
||||
struct mbox_chan *mbox;
|
||||
struct completion c;
|
||||
bool async;
|
||||
/* ... */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the handler for data received from remote. The behaviour is purely
|
||||
* dependent upon the protocol. This is just an example.
|
||||
*/
|
||||
static void message_from_remote(struct mbox_client *cl, void *mssg)
|
||||
{
|
||||
struct demo_client *dc = container_of(mbox_client,
|
||||
struct demo_client, cl);
|
||||
if (dc->aysnc) {
|
||||
if (is_an_ack(mssg)) {
|
||||
/* An ACK to our last sample sent */
|
||||
return; /* Or do something else here */
|
||||
} else { /* A new message from remote */
|
||||
queue_req(mssg);
|
||||
}
|
||||
} else {
|
||||
/* Remote f/w sends only ACK packets on this channel */
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static void sample_sent(struct mbox_client *cl, void *mssg, int r)
|
||||
{
|
||||
struct demo_client *dc = container_of(mbox_client,
|
||||
struct demo_client, cl);
|
||||
complete(&dc->c);
|
||||
}
|
||||
|
||||
static void client_demo(struct platform_device *pdev)
|
||||
{
|
||||
struct demo_client *dc_sync, *dc_async;
|
||||
/* The controller already knows async_pkt and sync_pkt */
|
||||
struct async_pkt ap;
|
||||
struct sync_pkt sp;
|
||||
|
||||
dc_sync = kzalloc(sizeof(*dc_sync), GFP_KERNEL);
|
||||
dc_async = kzalloc(sizeof(*dc_async), GFP_KERNEL);
|
||||
|
||||
/* Populate non-blocking mode client */
|
||||
dc_async->cl.dev = &pdev->dev;
|
||||
dc_async->cl.rx_callback = message_from_remote;
|
||||
dc_async->cl.tx_done = sample_sent;
|
||||
dc_async->cl.tx_block = false;
|
||||
dc_async->cl.tx_tout = 0; /* doesn't matter here */
|
||||
dc_async->cl.knows_txdone = false; /* depending upon protocol */
|
||||
dc_async->async = true;
|
||||
init_completion(&dc_async->c);
|
||||
|
||||
/* Populate blocking mode client */
|
||||
dc_sync->cl.dev = &pdev->dev;
|
||||
dc_sync->cl.rx_callback = message_from_remote;
|
||||
dc_sync->cl.tx_done = NULL; /* operate in blocking mode */
|
||||
dc_sync->cl.tx_block = true;
|
||||
dc_sync->cl.tx_tout = 500; /* by half a second */
|
||||
dc_sync->cl.knows_txdone = false; /* depending upon protocol */
|
||||
dc_sync->async = false;
|
||||
|
||||
/* ASync mailbox is listed second in 'mboxes' property */
|
||||
dc_async->mbox = mbox_request_channel(&dc_async->cl, 1);
|
||||
/* Populate data packet */
|
||||
/* ap.xxx = 123; etc */
|
||||
/* Send async message to remote */
|
||||
mbox_send_message(dc_async->mbox, &ap);
|
||||
|
||||
/* Sync mailbox is listed first in 'mboxes' property */
|
||||
dc_sync->mbox = mbox_request_channel(&dc_sync->cl, 0);
|
||||
/* Populate data packet */
|
||||
/* sp.abc = 123; etc */
|
||||
/* Send message to remote in blocking mode */
|
||||
mbox_send_message(dc_sync->mbox, &sp);
|
||||
/* At this point 'sp' has been sent */
|
||||
|
||||
/* Now wait for async chan to be done */
|
||||
wait_for_completion(&dc_async->c);
|
||||
}
|
||||
|
|
@ -56,6 +56,13 @@ ip_forward_use_pmtu - BOOLEAN
|
|||
0 - disabled
|
||||
1 - enabled
|
||||
|
||||
fwmark_reflect - BOOLEAN
|
||||
Controls the fwmark of kernel-generated IPv4 reply packets that are not
|
||||
associated with a socket for example, TCP RSTs or ICMP echo replies).
|
||||
If unset, these packets have a fwmark of zero. If set, they have the
|
||||
fwmark of the packet they are replying to.
|
||||
Default: 0
|
||||
|
||||
route/max_size - INTEGER
|
||||
Maximum number of routes allowed in the kernel. Increase
|
||||
this when using large numbers of interfaces and/or routes.
|
||||
|
|
@ -1201,6 +1208,13 @@ conf/all/forwarding - BOOLEAN
|
|||
proxy_ndp - BOOLEAN
|
||||
Do proxy ndp.
|
||||
|
||||
fwmark_reflect - BOOLEAN
|
||||
Controls the fwmark of kernel-generated IPv6 reply packets that are not
|
||||
associated with a socket for example, TCP RSTs or ICMPv6 echo replies).
|
||||
If unset, these packets have a fwmark of zero. If set, they have the
|
||||
fwmark of the packet they are replying to.
|
||||
Default: 0
|
||||
|
||||
conf/interface/*:
|
||||
Change special settings per interface.
|
||||
|
||||
|
|
|
|||
|
|
@ -5,7 +5,8 @@ performance expectations by drivers, subsystems and user space applications on
|
|||
one of the parameters.
|
||||
|
||||
Two different PM QoS frameworks are available:
|
||||
1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput.
|
||||
1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput,
|
||||
memory_bandwidth.
|
||||
2. the per-device PM QoS framework provides the API to manage the per-device latency
|
||||
constraints and PM QoS flags.
|
||||
|
||||
|
|
@ -13,6 +14,7 @@ Each parameters have defined units:
|
|||
* latency: usec
|
||||
* timeout: usec
|
||||
* throughput: kbs (kilo bit / sec)
|
||||
* memory bandwidth: mbs (mega bit / sec)
|
||||
|
||||
|
||||
1. PM QoS framework
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
# List of programs to build
|
||||
hostprogs-y := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test
|
||||
hostprogs-$(CONFIG_X86) := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test
|
||||
# Tell kbuild to always build the programs
|
||||
always := $(hostprogs-y)
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,33 @@
|
|||
# PTP 1588 clock support - User space test program
|
||||
#
|
||||
# Copyright (C) 2010 OMICRON electronics GmbH
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 2 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
CC = $(CROSS_COMPILE)gcc
|
||||
INC = -I$(KBUILD_OUTPUT)/usr/include
|
||||
CFLAGS = -Wall $(INC)
|
||||
LDLIBS = -lrt
|
||||
PROGS = testptp
|
||||
|
||||
all: $(PROGS)
|
||||
|
||||
testptp: testptp.o
|
||||
|
||||
clean:
|
||||
rm -f testptp.o
|
||||
|
||||
distclean: clean
|
||||
rm -f $(PROGS)
|
||||
|
|
@ -184,8 +184,7 @@ Any problems, questions, bug reports, lonely OSD nights, please email:
|
|||
More up-to-date information can be found on:
|
||||
http://open-osd.org
|
||||
|
||||
Boaz Harrosh <bharrosh@panasas.com>
|
||||
Benny Halevy <bhalevy@panasas.com>
|
||||
Boaz Harrosh <ooo@electrozaur.com>
|
||||
|
||||
References
|
||||
==========
|
||||
|
|
|
|||
|
|
@ -0,0 +1,378 @@
|
|||
Contents:
|
||||
|
||||
1) TCM Userspace Design
|
||||
a) Background
|
||||
b) Benefits
|
||||
c) Design constraints
|
||||
d) Implementation overview
|
||||
i. Mailbox
|
||||
ii. Command ring
|
||||
iii. Data Area
|
||||
e) Device discovery
|
||||
f) Device events
|
||||
g) Other contingencies
|
||||
2) Writing a user pass-through handler
|
||||
a) Discovering and configuring TCMU uio devices
|
||||
b) Waiting for events on the device(s)
|
||||
c) Managing the command ring
|
||||
3) Command filtering and pass_level
|
||||
4) A final note
|
||||
|
||||
|
||||
TCM Userspace Design
|
||||
--------------------
|
||||
|
||||
TCM is another name for LIO, an in-kernel iSCSI target (server).
|
||||
Existing TCM targets run in the kernel. TCMU (TCM in Userspace)
|
||||
allows userspace programs to be written which act as iSCSI targets.
|
||||
This document describes the design.
|
||||
|
||||
The existing kernel provides modules for different SCSI transport
|
||||
protocols. TCM also modularizes the data storage. There are existing
|
||||
modules for file, block device, RAM or using another SCSI device as
|
||||
storage. These are called "backstores" or "storage engines". These
|
||||
built-in modules are implemented entirely as kernel code.
|
||||
|
||||
Background:
|
||||
|
||||
In addition to modularizing the transport protocol used for carrying
|
||||
SCSI commands ("fabrics"), the Linux kernel target, LIO, also modularizes
|
||||
the actual data storage as well. These are referred to as "backstores"
|
||||
or "storage engines". The target comes with backstores that allow a
|
||||
file, a block device, RAM, or another SCSI device to be used for the
|
||||
local storage needed for the exported SCSI LUN. Like the rest of LIO,
|
||||
these are implemented entirely as kernel code.
|
||||
|
||||
These backstores cover the most common use cases, but not all. One new
|
||||
use case that other non-kernel target solutions, such as tgt, are able
|
||||
to support is using Gluster's GLFS or Ceph's RBD as a backstore. The
|
||||
target then serves as a translator, allowing initiators to store data
|
||||
in these non-traditional networked storage systems, while still only
|
||||
using standard protocols themselves.
|
||||
|
||||
If the target is a userspace process, supporting these is easy. tgt,
|
||||
for example, needs only a small adapter module for each, because the
|
||||
modules just use the available userspace libraries for RBD and GLFS.
|
||||
|
||||
Adding support for these backstores in LIO is considerably more
|
||||
difficult, because LIO is entirely kernel code. Instead of undertaking
|
||||
the significant work to port the GLFS or RBD APIs and protocols to the
|
||||
kernel, another approach is to create a userspace pass-through
|
||||
backstore for LIO, "TCMU".
|
||||
|
||||
|
||||
Benefits:
|
||||
|
||||
In addition to allowing relatively easy support for RBD and GLFS, TCMU
|
||||
will also allow easier development of new backstores. TCMU combines
|
||||
with the LIO loopback fabric to become something similar to FUSE
|
||||
(Filesystem in Userspace), but at the SCSI layer instead of the
|
||||
filesystem layer. A SUSE, if you will.
|
||||
|
||||
The disadvantage is there are more distinct components to configure, and
|
||||
potentially to malfunction. This is unavoidable, but hopefully not
|
||||
fatal if we're careful to keep things as simple as possible.
|
||||
|
||||
Design constraints:
|
||||
|
||||
- Good performance: high throughput, low latency
|
||||
- Cleanly handle if userspace:
|
||||
1) never attaches
|
||||
2) hangs
|
||||
3) dies
|
||||
4) misbehaves
|
||||
- Allow future flexibility in user & kernel implementations
|
||||
- Be reasonably memory-efficient
|
||||
- Simple to configure & run
|
||||
- Simple to write a userspace backend
|
||||
|
||||
|
||||
Implementation overview:
|
||||
|
||||
The core of the TCMU interface is a memory region that is shared
|
||||
between kernel and userspace. Within this region is: a control area
|
||||
(mailbox); a lockless producer/consumer circular buffer for commands
|
||||
to be passed up, and status returned; and an in/out data buffer area.
|
||||
|
||||
TCMU uses the pre-existing UIO subsystem. UIO allows device driver
|
||||
development in userspace, and this is conceptually very close to the
|
||||
TCMU use case, except instead of a physical device, TCMU implements a
|
||||
memory-mapped layout designed for SCSI commands. Using UIO also
|
||||
benefits TCMU by handling device introspection (e.g. a way for
|
||||
userspace to determine how large the shared region is) and signaling
|
||||
mechanisms in both directions.
|
||||
|
||||
There are no embedded pointers in the memory region. Everything is
|
||||
expressed as an offset from the region's starting address. This allows
|
||||
the ring to still work if the user process dies and is restarted with
|
||||
the region mapped at a different virtual address.
|
||||
|
||||
See target_core_user.h for the struct definitions.
|
||||
|
||||
The Mailbox:
|
||||
|
||||
The mailbox is always at the start of the shared memory region, and
|
||||
contains a version, details about the starting offset and size of the
|
||||
command ring, and head and tail pointers to be used by the kernel and
|
||||
userspace (respectively) to put commands on the ring, and indicate
|
||||
when the commands are completed.
|
||||
|
||||
version - 1 (userspace should abort if otherwise)
|
||||
flags - none yet defined.
|
||||
cmdr_off - The offset of the start of the command ring from the start
|
||||
of the memory region, to account for the mailbox size.
|
||||
cmdr_size - The size of the command ring. This does *not* need to be a
|
||||
power of two.
|
||||
cmd_head - Modified by the kernel to indicate when a command has been
|
||||
placed on the ring.
|
||||
cmd_tail - Modified by userspace to indicate when it has completed
|
||||
processing of a command.
|
||||
|
||||
The Command Ring:
|
||||
|
||||
Commands are placed on the ring by the kernel incrementing
|
||||
mailbox.cmd_head by the size of the command, modulo cmdr_size, and
|
||||
then signaling userspace via uio_event_notify(). Once the command is
|
||||
completed, userspace updates mailbox.cmd_tail in the same way and
|
||||
signals the kernel via a 4-byte write(). When cmd_head equals
|
||||
cmd_tail, the ring is empty -- no commands are currently waiting to be
|
||||
processed by userspace.
|
||||
|
||||
TCMU commands start with a common header containing "len_op", a 32-bit
|
||||
value that stores the length, as well as the opcode in the lowest
|
||||
unused bits. Currently only two opcodes are defined, TCMU_OP_PAD and
|
||||
TCMU_OP_CMD. When userspace encounters a command with PAD opcode, it
|
||||
should skip ahead by the bytes in "length". (The kernel inserts PAD
|
||||
entries to ensure each CMD entry fits contigously into the circular
|
||||
buffer.)
|
||||
|
||||
When userspace handles a CMD, it finds the SCSI CDB (Command Data
|
||||
Block) via tcmu_cmd_entry.req.cdb_off. This is an offset from the
|
||||
start of the overall shared memory region, not the entry. The data
|
||||
in/out buffers are accessible via tht req.iov[] array. Note that
|
||||
each iov.iov_base is also an offset from the start of the region.
|
||||
|
||||
TCMU currently does not support BIDI operations.
|
||||
|
||||
When completing a command, userspace sets rsp.scsi_status, and
|
||||
rsp.sense_buffer if necessary. Userspace then increments
|
||||
mailbox.cmd_tail by entry.hdr.length (mod cmdr_size) and signals the
|
||||
kernel via the UIO method, a 4-byte write to the file descriptor.
|
||||
|
||||
The Data Area:
|
||||
|
||||
This is shared-memory space after the command ring. The organization
|
||||
of this area is not defined in the TCMU interface, and userspace
|
||||
should access only the parts referenced by pending iovs.
|
||||
|
||||
|
||||
Device Discovery:
|
||||
|
||||
Other devices may be using UIO besides TCMU. Unrelated user processes
|
||||
may also be handling different sets of TCMU devices. TCMU userspace
|
||||
processes must find their devices by scanning sysfs
|
||||
class/uio/uio*/name. For TCMU devices, these names will be of the
|
||||
format:
|
||||
|
||||
tcm-user/<hba_num>/<device_name>/<subtype>/<path>
|
||||
|
||||
where "tcm-user" is common for all TCMU-backed UIO devices. <hba_num>
|
||||
and <device_name> allow userspace to find the device's path in the
|
||||
kernel target's configfs tree. Assuming the usual mount point, it is
|
||||
found at:
|
||||
|
||||
/sys/kernel/config/target/core/user_<hba_num>/<device_name>
|
||||
|
||||
This location contains attributes such as "hw_block_size", that
|
||||
userspace needs to know for correct operation.
|
||||
|
||||
<subtype> will be a userspace-process-unique string to identify the
|
||||
TCMU device as expecting to be backed by a certain handler, and <path>
|
||||
will be an additional handler-specific string for the user process to
|
||||
configure the device, if needed. The name cannot contain ':', due to
|
||||
LIO limitations.
|
||||
|
||||
For all devices so discovered, the user handler opens /dev/uioX and
|
||||
calls mmap():
|
||||
|
||||
mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)
|
||||
|
||||
where size must be equal to the value read from
|
||||
/sys/class/uio/uioX/maps/map0/size.
|
||||
|
||||
|
||||
Device Events:
|
||||
|
||||
If a new device is added or removed, a notification will be broadcast
|
||||
over netlink, using a generic netlink family name of "TCM-USER" and a
|
||||
multicast group named "config". This will include the UIO name as
|
||||
described in the previous section, as well as the UIO minor
|
||||
number. This should allow userspace to identify both the UIO device and
|
||||
the LIO device, so that after determining the device is supported
|
||||
(based on subtype) it can take the appropriate action.
|
||||
|
||||
|
||||
Other contingencies:
|
||||
|
||||
Userspace handler process never attaches:
|
||||
|
||||
- TCMU will post commands, and then abort them after a timeout period
|
||||
(30 seconds.)
|
||||
|
||||
Userspace handler process is killed:
|
||||
|
||||
- It is still possible to restart and re-connect to TCMU
|
||||
devices. Command ring is preserved. However, after the timeout period,
|
||||
the kernel will abort pending tasks.
|
||||
|
||||
Userspace handler process hangs:
|
||||
|
||||
- The kernel will abort pending tasks after a timeout period.
|
||||
|
||||
Userspace handler process is malicious:
|
||||
|
||||
- The process can trivially break the handling of devices it controls,
|
||||
but should not be able to access kernel memory outside its shared
|
||||
memory areas.
|
||||
|
||||
|
||||
Writing a user pass-through handler (with example code)
|
||||
-------------------------------------------------------
|
||||
|
||||
A user process handing a TCMU device must support the following:
|
||||
|
||||
a) Discovering and configuring TCMU uio devices
|
||||
b) Waiting for events on the device(s)
|
||||
c) Managing the command ring: Parsing operations and commands,
|
||||
performing work as needed, setting response fields (scsi_status and
|
||||
possibly sense_buffer), updating cmd_tail, and notifying the kernel
|
||||
that work has been finished
|
||||
|
||||
First, consider instead writing a plugin for tcmu-runner. tcmu-runner
|
||||
implements all of this, and provides a higher-level API for plugin
|
||||
authors.
|
||||
|
||||
TCMU is designed so that multiple unrelated processes can manage TCMU
|
||||
devices separately. All handlers should make sure to only open their
|
||||
devices, based opon a known subtype string.
|
||||
|
||||
a) Discovering and configuring TCMU UIO devices:
|
||||
|
||||
(error checking omitted for brevity)
|
||||
|
||||
int fd, dev_fd;
|
||||
char buf[256];
|
||||
unsigned long long map_len;
|
||||
void *map;
|
||||
|
||||
fd = open("/sys/class/uio/uio0/name", O_RDONLY);
|
||||
ret = read(fd, buf, sizeof(buf));
|
||||
close(fd);
|
||||
buf[ret-1] = '\0'; /* null-terminate and chop off the \n */
|
||||
|
||||
/* we only want uio devices whose name is a format we expect */
|
||||
if (strncmp(buf, "tcm-user", 8))
|
||||
exit(-1);
|
||||
|
||||
/* Further checking for subtype also needed here */
|
||||
|
||||
fd = open(/sys/class/uio/%s/maps/map0/size, O_RDONLY);
|
||||
ret = read(fd, buf, sizeof(buf));
|
||||
close(fd);
|
||||
str_buf[ret-1] = '\0'; /* null-terminate and chop off the \n */
|
||||
|
||||
map_len = strtoull(buf, NULL, 0);
|
||||
|
||||
dev_fd = open("/dev/uio0", O_RDWR);
|
||||
map = mmap(NULL, map_len, PROT_READ|PROT_WRITE, MAP_SHARED, dev_fd, 0);
|
||||
|
||||
|
||||
b) Waiting for events on the device(s)
|
||||
|
||||
while (1) {
|
||||
char buf[4];
|
||||
|
||||
int ret = read(dev_fd, buf, 4); /* will block */
|
||||
|
||||
handle_device_events(dev_fd, map);
|
||||
}
|
||||
|
||||
|
||||
c) Managing the command ring
|
||||
|
||||
#include <linux/target_core_user.h>
|
||||
|
||||
int handle_device_events(int fd, void *map)
|
||||
{
|
||||
struct tcmu_mailbox *mb = map;
|
||||
struct tcmu_cmd_entry *ent = (void *) mb + mb->cmdr_off + mb->cmd_tail;
|
||||
int did_some_work = 0;
|
||||
|
||||
/* Process events from cmd ring until we catch up with cmd_head */
|
||||
while (ent != (void *)mb + mb->cmdr_off + mb->cmd_head) {
|
||||
|
||||
if (tcmu_hdr_get_op(&ent->hdr) == TCMU_OP_CMD) {
|
||||
uint8_t *cdb = (void *)mb + ent->req.cdb_off;
|
||||
bool success = true;
|
||||
|
||||
/* Handle command here. */
|
||||
printf("SCSI opcode: 0x%x\n", cdb[0]);
|
||||
|
||||
/* Set response fields */
|
||||
if (success)
|
||||
ent->rsp.scsi_status = SCSI_NO_SENSE;
|
||||
else {
|
||||
/* Also fill in rsp->sense_buffer here */
|
||||
ent->rsp.scsi_status = SCSI_CHECK_CONDITION;
|
||||
}
|
||||
}
|
||||
else {
|
||||
/* Do nothing for PAD entries */
|
||||
}
|
||||
|
||||
/* update cmd_tail */
|
||||
mb->cmd_tail = (mb->cmd_tail + tcmu_hdr_get_len(&ent->hdr)) % mb->cmdr_size;
|
||||
ent = (void *) mb + mb->cmdr_off + mb->cmd_tail;
|
||||
did_some_work = 1;
|
||||
}
|
||||
|
||||
/* Notify the kernel that work has been finished */
|
||||
if (did_some_work) {
|
||||
uint32_t buf = 0;
|
||||
|
||||
write(fd, &buf, 4);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Command filtering and pass_level
|
||||
--------------------------------
|
||||
|
||||
TCMU supports a "pass_level" option with valid values of 0 or 1. When
|
||||
the value is 0 (the default), nearly all SCSI commands received for
|
||||
the device are passed through to the handler. This allows maximum
|
||||
flexibility but increases the amount of code required by the handler,
|
||||
to support all mandatory SCSI commands. If pass_level is set to 1,
|
||||
then only IO-related commands are presented, and the rest are handled
|
||||
by LIO's in-kernel command emulation. The commands presented at level
|
||||
1 include all versions of:
|
||||
|
||||
READ
|
||||
WRITE
|
||||
WRITE_VERIFY
|
||||
XDWRITEREAD
|
||||
WRITE_SAME
|
||||
COMPARE_AND_WRITE
|
||||
SYNCHRONIZE_CACHE
|
||||
UNMAP
|
||||
|
||||
|
||||
A final note
|
||||
------------
|
||||
|
||||
Please be careful to return codes as defined by the SCSI
|
||||
specifications. These are different than some values defined in the
|
||||
scsi/scsi.h include file. For example, CHECK CONDITION's status code
|
||||
is 2, not 1.
|
||||
|
|
@ -10,3 +10,6 @@ always := $(hostprogs-y)
|
|||
HOSTCFLAGS := -I$(objtree)/usr/include -std=gnu99
|
||||
HOSTCFLAGS_vdso_standalone_test_x86.o := -fno-asynchronous-unwind-tables -fno-stack-protector
|
||||
HOSTLOADLIBES_vdso_standalone_test_x86 := -nostdlib
|
||||
ifeq ($(CONFIG_X86_32),y)
|
||||
HOSTLOADLIBES_vdso_standalone_test_x86 += -lgcc_s
|
||||
endif
|
||||
|
|
|
|||
|
|
@ -63,7 +63,7 @@ static inline void linux_exit(int code)
|
|||
x86_syscall3(__NR_exit, code, 0, 0);
|
||||
}
|
||||
|
||||
void to_base10(char *lastdig, uint64_t n)
|
||||
void to_base10(char *lastdig, time_t n)
|
||||
{
|
||||
while (n) {
|
||||
*lastdig = (n % 10) + '0';
|
||||
|
|
|
|||
|
|
@ -221,12 +221,11 @@ ccs_out_mode: specify the allowed video output crop/compose/scaling combination
|
|||
key, not quality.
|
||||
|
||||
multiplanar: select whether each device instance supports multi-planar formats,
|
||||
and thus the V4L2 multi-planar API. By default the first device instance
|
||||
is single-planar, the second multi-planar, and it keeps alternating.
|
||||
and thus the V4L2 multi-planar API. By default device instances are
|
||||
single-planar.
|
||||
|
||||
This module option can override that for each instance. Values are:
|
||||
|
||||
0: use alternating single and multi-planar devices.
|
||||
1: this is a single-planar instance.
|
||||
2: this is a multi-planar instance.
|
||||
|
||||
|
|
@ -975,9 +974,8 @@ is set, then the alpha component is only used for the color red and set to
|
|||
0 otherwise.
|
||||
|
||||
The driver has to be configured to support the multiplanar formats. By default
|
||||
the first driver instance is single-planar, the second is multi-planar, and it
|
||||
keeps alternating. This can be changed by setting the multiplanar module option,
|
||||
see section 1 for more details on that option.
|
||||
the driver instances are single-planar. This can be changed by setting the
|
||||
multiplanar module option, see section 1 for more details on that option.
|
||||
|
||||
If the driver instance is using the multiplanar formats/API, then the first
|
||||
single planar format (YUYV) and the multiplanar NV16M and NV61M formats the
|
||||
|
|
@ -1021,7 +1019,7 @@ the output overlay for the video output, turn on video looping and capture
|
|||
to see the blended framebuffer overlay that's being written to by the second
|
||||
instance. This setup would require the following commands:
|
||||
|
||||
$ sudo modprobe vivid n_devs=2 node_types=0x10101,0x1 multiplanar=1,1
|
||||
$ sudo modprobe vivid n_devs=2 node_types=0x10101,0x1
|
||||
$ v4l2-ctl -d1 --find-fb
|
||||
/dev/fb1 is the framebuffer associated with base address 0x12800000
|
||||
$ sudo v4l2-ctl -d2 --set-fbuf fb=1
|
||||
|
|
|
|||
|
|
@ -274,7 +274,7 @@ This command mounts a (pseudo) filesystem of type hugetlbfs on the directory
|
|||
/mnt/huge. Any files created on /mnt/huge uses huge pages. The uid and gid
|
||||
options sets the owner and group of the root of the file system. By default
|
||||
the uid and gid of the current process are taken. The mode option sets the
|
||||
mode of root of file system to value & 0777. This value is given in octal.
|
||||
mode of root of file system to value & 01777. This value is given in octal.
|
||||
By default the value 0755 is picked. The size option sets the maximum value of
|
||||
memory (huge pages) allowed for that filesystem (/mnt/huge). The size is
|
||||
rounded down to HPAGE_SIZE. The option nr_inodes sets the maximum number of
|
||||
|
|
|
|||
82
MAINTAINERS
82
MAINTAINERS
|
|
@ -1543,6 +1543,7 @@ F: arch/arm/mach-pxa/include/mach/z2.h
|
|||
|
||||
ARM/ZYNQ ARCHITECTURE
|
||||
M: Michal Simek <michal.simek@xilinx.com>
|
||||
R: Sören Brinkmann <soren.brinkmann@xilinx.com>
|
||||
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
|
||||
W: http://wiki.xilinx.com
|
||||
T: git git://git.xilinx.com/linux-xlnx.git
|
||||
|
|
@ -1749,6 +1750,13 @@ M: Nicolas Ferre <nicolas.ferre@atmel.com>
|
|||
S: Supported
|
||||
F: drivers/spi/spi-atmel.*
|
||||
|
||||
ATMEL SSC DRIVER
|
||||
M: Bo Shen <voice.shen@atmel.com>
|
||||
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
|
||||
S: Supported
|
||||
F: drivers/misc/atmel-ssc.c
|
||||
F: include/linux/atmel-ssc.h
|
||||
|
||||
ATMEL Timer Counter (TC) AND CLOCKSOURCE DRIVERS
|
||||
M: Nicolas Ferre <nicolas.ferre@atmel.com>
|
||||
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
|
||||
|
|
@ -2064,8 +2072,9 @@ F: drivers/clocksource/bcm_kona_timer.c
|
|||
|
||||
BROADCOM BCM2835 ARM ARCHITECTURE
|
||||
M: Stephen Warren <swarren@wwwdotorg.org>
|
||||
M: Lee Jones <lee@kernel.org>
|
||||
L: linux-rpi-kernel@lists.infradead.org (moderated for non-subscribers)
|
||||
T: git git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi.git
|
||||
T: git git://git.kernel.org/pub/scm/linux/kernel/git/rpi/linux-rpi.git
|
||||
S: Maintained
|
||||
N: bcm2835
|
||||
|
||||
|
|
@ -2735,6 +2744,13 @@ W: http://www.chelsio.com
|
|||
S: Supported
|
||||
F: drivers/net/ethernet/chelsio/cxgb3/
|
||||
|
||||
CXGB3 ISCSI DRIVER (CXGB3I)
|
||||
M: Karen Xie <kxie@chelsio.com>
|
||||
L: linux-scsi@vger.kernel.org
|
||||
W: http://www.chelsio.com
|
||||
S: Supported
|
||||
F: drivers/scsi/cxgbi/cxgb3i
|
||||
|
||||
CXGB3 IWARP RNIC DRIVER (IW_CXGB3)
|
||||
M: Steve Wise <swise@chelsio.com>
|
||||
L: linux-rdma@vger.kernel.org
|
||||
|
|
@ -2749,6 +2765,13 @@ W: http://www.chelsio.com
|
|||
S: Supported
|
||||
F: drivers/net/ethernet/chelsio/cxgb4/
|
||||
|
||||
CXGB4 ISCSI DRIVER (CXGB4I)
|
||||
M: Karen Xie <kxie@chelsio.com>
|
||||
L: linux-scsi@vger.kernel.org
|
||||
W: http://www.chelsio.com
|
||||
S: Supported
|
||||
F: drivers/scsi/cxgbi/cxgb4i
|
||||
|
||||
CXGB4 IWARP RNIC DRIVER (IW_CXGB4)
|
||||
M: Steve Wise <swise@chelsio.com>
|
||||
L: linux-rdma@vger.kernel.org
|
||||
|
|
@ -4305,8 +4328,10 @@ F: Documentation/blockdev/cpqarray.txt
|
|||
F: drivers/block/cpqarray.*
|
||||
|
||||
HEWLETT-PACKARD SMART ARRAY RAID DRIVER (hpsa)
|
||||
M: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
|
||||
M: Don Brace <don.brace@pmcs.com>
|
||||
L: iss_storagedev@hp.com
|
||||
L: storagedev@pmcs.com
|
||||
L: linux-scsi@vger.kernel.org
|
||||
S: Supported
|
||||
F: Documentation/scsi/hpsa.txt
|
||||
F: drivers/scsi/hpsa*.[ch]
|
||||
|
|
@ -4314,8 +4339,10 @@ F: include/linux/cciss*.h
|
|||
F: include/uapi/linux/cciss*.h
|
||||
|
||||
HEWLETT-PACKARD SMART CISS RAID DRIVER (cciss)
|
||||
M: Mike Miller <mike.miller@hp.com>
|
||||
M: Don Brace <don.brace@pmcs.com>
|
||||
L: iss_storagedev@hp.com
|
||||
L: storagedev@pmcs.com
|
||||
L: linux-scsi@vger.kernel.org
|
||||
S: Supported
|
||||
F: Documentation/blockdev/cciss.txt
|
||||
F: drivers/block/cciss*
|
||||
|
|
@ -4601,7 +4628,7 @@ S: Supported
|
|||
F: drivers/crypto/nx/
|
||||
|
||||
IBM Power 842 compression accelerator
|
||||
M: Nathan Fontenot <nfont@linux.vnet.ibm.com>
|
||||
M: Dan Streetman <ddstreet@us.ibm.com>
|
||||
S: Supported
|
||||
F: drivers/crypto/nx/nx-842.c
|
||||
F: include/linux/nx842.h
|
||||
|
|
@ -4703,6 +4730,7 @@ L: linux-iio@vger.kernel.org
|
|||
S: Maintained
|
||||
F: drivers/iio/
|
||||
F: drivers/staging/iio/
|
||||
F: include/linux/iio/
|
||||
|
||||
IKANOS/ADI EAGLE ADSL USB DRIVER
|
||||
M: Matthieu Castet <castet.matthieu@free.fr>
|
||||
|
|
@ -5834,6 +5862,14 @@ S: Maintained
|
|||
F: drivers/net/macvlan.c
|
||||
F: include/linux/if_macvlan.h
|
||||
|
||||
MAILBOX API
|
||||
M: Jassi Brar <jassisinghbrar@gmail.com>
|
||||
L: linux-kernel@vger.kernel.org
|
||||
S: Maintained
|
||||
F: drivers/mailbox/
|
||||
F: include/linux/mailbox_client.h
|
||||
F: include/linux/mailbox_controller.h
|
||||
|
||||
MAN-PAGES: MANUAL PAGES FOR LINUX -- Sections 2, 3, 4, 5, and 7
|
||||
M: Michael Kerrisk <mtk.manpages@gmail.com>
|
||||
W: http://www.kernel.org/doc/man-pages
|
||||
|
|
@ -6575,6 +6611,23 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git
|
|||
S: Maintained
|
||||
F: arch/arm/*omap*/
|
||||
F: drivers/i2c/busses/i2c-omap.c
|
||||
F: drivers/irqchip/irq-omap-intc.c
|
||||
F: drivers/mfd/*omap*.c
|
||||
F: drivers/mfd/menelaus.c
|
||||
F: drivers/mfd/palmas.c
|
||||
F: drivers/mfd/tps65217.c
|
||||
F: drivers/mfd/tps65218.c
|
||||
F: drivers/mfd/tps65910.c
|
||||
F: drivers/mfd/twl-core.[ch]
|
||||
F: drivers/mfd/twl4030*.c
|
||||
F: drivers/mfd/twl6030*.c
|
||||
F: drivers/mfd/twl6040*.c
|
||||
F: drivers/regulator/palmas-regulator*.c
|
||||
F: drivers/regulator/pbias-regulator.c
|
||||
F: drivers/regulator/tps65217-regulator.c
|
||||
F: drivers/regulator/tps65218-regulator.c
|
||||
F: drivers/regulator/tps65910-regulator.c
|
||||
F: drivers/regulator/twl-regulator.c
|
||||
F: include/linux/i2c-omap.h
|
||||
|
||||
OMAP DEVICE TREE SUPPORT
|
||||
|
|
@ -6585,6 +6638,9 @@ L: devicetree@vger.kernel.org
|
|||
S: Maintained
|
||||
F: arch/arm/boot/dts/*omap*
|
||||
F: arch/arm/boot/dts/*am3*
|
||||
F: arch/arm/boot/dts/*am4*
|
||||
F: arch/arm/boot/dts/*am5*
|
||||
F: arch/arm/boot/dts/*dra7*
|
||||
|
||||
OMAP CLOCK FRAMEWORK SUPPORT
|
||||
M: Paul Walmsley <paul@pwsan.com>
|
||||
|
|
@ -6822,7 +6878,7 @@ S: Orphan
|
|||
F: drivers/net/wireless/orinoco/
|
||||
|
||||
OSD LIBRARY and FILESYSTEM
|
||||
M: Boaz Harrosh <bharrosh@panasas.com>
|
||||
M: Boaz Harrosh <ooo@electrozaur.com>
|
||||
M: Benny Halevy <bhalevy@primarydata.com>
|
||||
L: osd-dev@open-osd.org
|
||||
W: http://open-osd.org
|
||||
|
|
@ -6832,6 +6888,13 @@ F: drivers/scsi/osd/
|
|||
F: include/scsi/osd_*
|
||||
F: fs/exofs/
|
||||
|
||||
OVERLAYFS FILESYSTEM
|
||||
M: Miklos Szeredi <miklos@szeredi.hu>
|
||||
L: linux-fsdevel@vger.kernel.org
|
||||
S: Supported
|
||||
F: fs/overlayfs/*
|
||||
F: Documentation/filesystems/overlayfs.txt
|
||||
|
||||
P54 WIRELESS DRIVER
|
||||
M: Christian Lamparter <chunkeey@googlemail.com>
|
||||
L: linux-wireless@vger.kernel.org
|
||||
|
|
@ -7153,6 +7216,7 @@ F: drivers/crypto/picoxcell*
|
|||
|
||||
PIN CONTROL SUBSYSTEM
|
||||
M: Linus Walleij <linus.walleij@linaro.org>
|
||||
L: linux-gpio@vger.kernel.org
|
||||
S: Maintained
|
||||
F: drivers/pinctrl/
|
||||
F: include/linux/pinctrl/
|
||||
|
|
@ -8457,7 +8521,6 @@ F: arch/arm/mach-s3c24xx/bast-irq.c
|
|||
TI DAVINCI MACHINE SUPPORT
|
||||
M: Sekhar Nori <nsekhar@ti.com>
|
||||
M: Kevin Hilman <khilman@deeprootsystems.com>
|
||||
L: davinci-linux-open-source@linux.davincidsp.com (moderated for non-subscribers)
|
||||
T: git git://gitorious.org/linux-davinci/linux-davinci.git
|
||||
Q: http://patchwork.kernel.org/project/linux-davinci/list/
|
||||
S: Supported
|
||||
|
|
@ -8467,7 +8530,6 @@ F: drivers/i2c/busses/i2c-davinci.c
|
|||
TI DAVINCI SERIES MEDIA DRIVER
|
||||
M: Lad, Prabhakar <prabhakar.csengg@gmail.com>
|
||||
L: linux-media@vger.kernel.org
|
||||
L: davinci-linux-open-source@linux.davincidsp.com (moderated for non-subscribers)
|
||||
W: http://linuxtv.org/
|
||||
Q: http://patchwork.linuxtv.org/project/linux-media/list/
|
||||
T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git
|
||||
|
|
@ -9584,7 +9646,6 @@ F: drivers/staging/unisys/
|
|||
|
||||
UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER
|
||||
M: Vinayak Holikatti <vinholikatti@gmail.com>
|
||||
M: Santosh Y <santoshsy@gmail.com>
|
||||
L: linux-scsi@vger.kernel.org
|
||||
S: Supported
|
||||
F: Documentation/scsi/ufs.txt
|
||||
|
|
@ -9678,11 +9739,6 @@ S: Maintained
|
|||
F: Documentation/hid/hiddev.txt
|
||||
F: drivers/hid/usbhid/
|
||||
|
||||
USB/IP DRIVERS
|
||||
L: linux-usb@vger.kernel.org
|
||||
S: Orphan
|
||||
F: drivers/staging/usbip/
|
||||
|
||||
USB ISP116X DRIVER
|
||||
M: Olav Kongas <ok@artecdesign.ee>
|
||||
L: linux-usb@vger.kernel.org
|
||||
|
|
|
|||
9
Makefile
9
Makefile
|
|
@ -1,8 +1,8 @@
|
|||
VERSION = 3
|
||||
PATCHLEVEL = 18
|
||||
SUBLEVEL = 0
|
||||
EXTRAVERSION = -rc1
|
||||
NAME = Shuffling Zombie Juror
|
||||
EXTRAVERSION = -rc5
|
||||
NAME = Diseased Newt
|
||||
|
||||
# *DOCUMENTATION*
|
||||
# To see a list of typical targets execute "make help"
|
||||
|
|
@ -297,7 +297,7 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
|
|||
|
||||
HOSTCC = gcc
|
||||
HOSTCXX = g++
|
||||
HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
|
||||
HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
|
||||
HOSTCXXFLAGS = -O2
|
||||
|
||||
ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
|
||||
|
|
@ -401,7 +401,8 @@ KBUILD_CPPFLAGS := -D__KERNEL__
|
|||
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
|
||||
-fno-strict-aliasing -fno-common \
|
||||
-Werror-implicit-function-declaration \
|
||||
-Wno-format-security
|
||||
-Wno-format-security \
|
||||
-std=gnu89
|
||||
|
||||
KBUILD_AFLAGS_KERNEL :=
|
||||
KBUILD_CFLAGS_KERNEL :=
|
||||
|
|
|
|||
|
|
@ -9,6 +9,7 @@
|
|||
config ARC
|
||||
def_bool y
|
||||
select BUILDTIME_EXTABLE_SORT
|
||||
select COMMON_CLK
|
||||
select CLONE_BACKWARDS
|
||||
# ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
|
||||
select DEVTMPFS if !INITRAMFS_SOURCE=""
|
||||
|
|
@ -73,9 +74,6 @@ config STACKTRACE_SUPPORT
|
|||
config HAVE_LATENCYTOP_SUPPORT
|
||||
def_bool y
|
||||
|
||||
config NO_DMA
|
||||
def_bool n
|
||||
|
||||
source "init/Kconfig"
|
||||
source "kernel/Kconfig.freezer"
|
||||
|
||||
|
|
@ -354,7 +352,7 @@ config ARC_CURR_IN_REG
|
|||
kernel mode. This saves memory access for each such access
|
||||
|
||||
|
||||
config ARC_MISALIGN_ACCESS
|
||||
config ARC_EMUL_UNALIGNED
|
||||
bool "Emulate unaligned memory access (userspace only)"
|
||||
select SYSCTL_ARCH_UNALIGN_NO_WARN
|
||||
select SYSCTL_ARCH_UNALIGN_ALLOW
|
||||
|
|
|
|||
|
|
@ -25,7 +25,6 @@ ifdef CONFIG_ARC_CURR_IN_REG
|
|||
LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
|
||||
endif
|
||||
|
||||
upto_gcc42 := $(call cc-ifversion, -le, 0402, y)
|
||||
upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
|
||||
atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
|
||||
atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y)
|
||||
|
|
@ -60,25 +59,11 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
|
|||
# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
|
||||
ldflags-$(upto_gcc44) += -marclinux
|
||||
|
||||
ARC_LIBGCC := -mA7
|
||||
cflags-$(CONFIG_ARC_HAS_HW_MPY) += -multcost=16
|
||||
|
||||
ifndef CONFIG_ARC_HAS_HW_MPY
|
||||
cflags-y += -mno-mpy
|
||||
|
||||
# newlib for ARC700 assumes MPY to be always present, which is generally true
|
||||
# However, if someone really doesn't want MPY, we need to use the 600 ver
|
||||
# which coupled with -mno-mpy will use mpy emulation
|
||||
# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments,
|
||||
# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted
|
||||
|
||||
ifeq ($(upto_gcc42),y)
|
||||
ARC_LIBGCC := -marc600
|
||||
cflags-y += -multcost=30
|
||||
endif
|
||||
endif
|
||||
|
||||
LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name)
|
||||
LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
|
||||
|
||||
# Modules with short calls might break for calls into builtin-kernel
|
||||
KBUILD_CFLAGS_MODULE += -mlong-calls
|
||||
|
|
|
|||
|
|
@ -24,11 +24,6 @@ aliases {
|
|||
serial0 = &arcuart0;
|
||||
};
|
||||
|
||||
memory {
|
||||
device_type = "memory";
|
||||
reg = <0x00000000 0x10000000>; /* 256M */
|
||||
};
|
||||
|
||||
fpga {
|
||||
compatible = "simple-bus";
|
||||
#address-cells = <1>;
|
||||
|
|
|
|||
|
|
@ -20,18 +20,13 @@ chosen {
|
|||
/* this is for console on PGU */
|
||||
/* bootargs = "console=tty0 consoleblank=0"; */
|
||||
/* this is for console on serial */
|
||||
bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=ttyS0,115200n8 consoleblank=0 debug";
|
||||
bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=tty0 console=ttyS0,115200n8 consoleblank=0 debug";
|
||||
};
|
||||
|
||||
aliases {
|
||||
serial0 = &uart0;
|
||||
};
|
||||
|
||||
memory {
|
||||
device_type = "memory";
|
||||
reg = <0x80000000 0x10000000>; /* 256M */
|
||||
};
|
||||
|
||||
fpga {
|
||||
compatible = "simple-bus";
|
||||
#address-cells = <1>;
|
||||
|
|
|
|||
|
|
@ -23,7 +23,6 @@ CONFIG_MODULES=y
|
|||
# CONFIG_IOSCHED_DEADLINE is not set
|
||||
# CONFIG_IOSCHED_CFQ is not set
|
||||
CONFIG_ARC_PLAT_FPGA_LEGACY=y
|
||||
CONFIG_ARC_BOARD_ML509=y
|
||||
# CONFIG_ARC_HAS_RTSC is not set
|
||||
CONFIG_ARC_BUILTIN_DTB_NAME="angel4"
|
||||
CONFIG_PREEMPT=y
|
||||
|
|
|
|||
|
|
@ -20,7 +20,6 @@ CONFIG_MODULES=y
|
|||
# CONFIG_IOSCHED_DEADLINE is not set
|
||||
# CONFIG_IOSCHED_CFQ is not set
|
||||
CONFIG_ARC_PLAT_FPGA_LEGACY=y
|
||||
CONFIG_ARC_BOARD_ML509=y
|
||||
# CONFIG_ARC_HAS_RTSC is not set
|
||||
CONFIG_ARC_BUILTIN_DTB_NAME="angel4"
|
||||
CONFIG_PREEMPT=y
|
||||
|
|
|
|||
|
|
@ -21,7 +21,6 @@ CONFIG_MODULES=y
|
|||
# CONFIG_IOSCHED_DEADLINE is not set
|
||||
# CONFIG_IOSCHED_CFQ is not set
|
||||
CONFIG_ARC_PLAT_FPGA_LEGACY=y
|
||||
CONFIG_ARC_BOARD_ML509=y
|
||||
# CONFIG_ARC_IDE is not set
|
||||
# CONFIG_ARCTANGENT_EMAC is not set
|
||||
# CONFIG_ARC_HAS_RTSC is not set
|
||||
|
|
|
|||
|
|
@ -9,19 +9,16 @@
|
|||
#ifndef _ASM_ARC_ARCREGS_H
|
||||
#define _ASM_ARC_ARCREGS_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
/* Build Configuration Registers */
|
||||
#define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */
|
||||
#define ARC_REG_CRC_BCR 0x62
|
||||
#define ARC_REG_DVFB_BCR 0x64
|
||||
#define ARC_REG_EXTARITH_BCR 0x65
|
||||
#define ARC_REG_VECBASE_BCR 0x68
|
||||
#define ARC_REG_PERIBASE_BCR 0x69
|
||||
#define ARC_REG_FP_BCR 0x6B /* Single-Precision FPU */
|
||||
#define ARC_REG_DPFP_BCR 0x6C /* Dbl Precision FPU */
|
||||
#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */
|
||||
#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
|
||||
#define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */
|
||||
#define ARC_REG_TIMERS_BCR 0x75
|
||||
#define ARC_REG_AP_BCR 0x76
|
||||
#define ARC_REG_ICCM_BCR 0x78
|
||||
#define ARC_REG_XY_MEM_BCR 0x79
|
||||
#define ARC_REG_MAC_BCR 0x7a
|
||||
|
|
@ -31,6 +28,9 @@
|
|||
#define ARC_REG_MIXMAX_BCR 0x7e
|
||||
#define ARC_REG_BARREL_BCR 0x7f
|
||||
#define ARC_REG_D_UNCACH_BCR 0x6A
|
||||
#define ARC_REG_BPU_BCR 0xc0
|
||||
#define ARC_REG_ISA_CFG_BCR 0xc1
|
||||
#define ARC_REG_SMART_BCR 0xFF
|
||||
|
||||
/* status32 Bits Positions */
|
||||
#define STATUS_AE_BIT 5 /* Exception active */
|
||||
|
|
@ -191,14 +191,6 @@
|
|||
#define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10))
|
||||
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
|
||||
|
||||
#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
|
||||
/* These DPFP regs need to be saved/restored across ctx-sw */
|
||||
struct arc_fpu {
|
||||
struct {
|
||||
unsigned int l, h;
|
||||
} aux_dpfp[2];
|
||||
};
|
||||
#endif
|
||||
|
||||
/*
|
||||
***************************************************************
|
||||
|
|
@ -212,27 +204,19 @@ struct bcr_identity {
|
|||
#endif
|
||||
};
|
||||
|
||||
#define EXTN_SWAP_VALID 0x1
|
||||
#define EXTN_NORM_VALID 0x2
|
||||
#define EXTN_MINMAX_VALID 0x2
|
||||
#define EXTN_BARREL_VALID 0x2
|
||||
|
||||
struct bcr_extn {
|
||||
struct bcr_isa {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int pad:20, crc:1, ext_arith:2, mul:2, barrel:2, minmax:2,
|
||||
norm:2, swap:1;
|
||||
unsigned int pad1:23, atomic1:1, ver:8;
|
||||
#else
|
||||
unsigned int swap:1, norm:2, minmax:2, barrel:2, mul:2, ext_arith:2,
|
||||
crc:1, pad:20;
|
||||
unsigned int ver:8, atomic1:1, pad1:23;
|
||||
#endif
|
||||
};
|
||||
|
||||
/* DSP Options Ref Manual */
|
||||
struct bcr_extn_mac_mul {
|
||||
struct bcr_mpy {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int pad:16, type:8, ver:8;
|
||||
unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8;
|
||||
#else
|
||||
unsigned int ver:8, type:8, pad:16;
|
||||
unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8;
|
||||
#endif
|
||||
};
|
||||
|
||||
|
|
@ -251,6 +235,7 @@ struct bcr_perip {
|
|||
unsigned int pad:8, sz:8, pad2:8, start:8;
|
||||
#endif
|
||||
};
|
||||
|
||||
struct bcr_iccm {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int base:16, pad:5, sz:3, ver:8;
|
||||
|
|
@ -277,8 +262,8 @@ struct bcr_dccm {
|
|||
#endif
|
||||
};
|
||||
|
||||
/* Both SP and DP FPU BCRs have same format */
|
||||
struct bcr_fp {
|
||||
/* ARCompact: Both SP and DP FPU BCRs have same format */
|
||||
struct bcr_fp_arcompact {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int fast:1, ver:8;
|
||||
#else
|
||||
|
|
@ -286,6 +271,30 @@ struct bcr_fp {
|
|||
#endif
|
||||
};
|
||||
|
||||
struct bcr_timer {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int pad2:15, rtsc:1, pad1:6, t1:1, t0:1, ver:8;
|
||||
#else
|
||||
unsigned int ver:8, t0:1, t1:1, pad1:6, rtsc:1, pad2:15;
|
||||
#endif
|
||||
};
|
||||
|
||||
struct bcr_bpu_arcompact {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8;
|
||||
#else
|
||||
unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19;
|
||||
#endif
|
||||
};
|
||||
|
||||
struct bcr_generic {
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
unsigned int pad:24, ver:8;
|
||||
#else
|
||||
unsigned int ver:8, pad:24;
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
*******************************************************************
|
||||
* Generic structures to hold build configuration used at runtime
|
||||
|
|
@ -299,6 +308,10 @@ struct cpuinfo_arc_cache {
|
|||
unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6;
|
||||
};
|
||||
|
||||
struct cpuinfo_arc_bpu {
|
||||
unsigned int ver, full, num_cache, num_pred;
|
||||
};
|
||||
|
||||
struct cpuinfo_arc_ccm {
|
||||
unsigned int base_addr, sz;
|
||||
};
|
||||
|
|
@ -306,21 +319,25 @@ struct cpuinfo_arc_ccm {
|
|||
struct cpuinfo_arc {
|
||||
struct cpuinfo_arc_cache icache, dcache;
|
||||
struct cpuinfo_arc_mmu mmu;
|
||||
struct cpuinfo_arc_bpu bpu;
|
||||
struct bcr_identity core;
|
||||
unsigned int timers;
|
||||
struct bcr_isa isa;
|
||||
struct bcr_timer timers;
|
||||
unsigned int vec_base;
|
||||
unsigned int uncached_base;
|
||||
struct cpuinfo_arc_ccm iccm, dccm;
|
||||
struct bcr_extn extn;
|
||||
struct {
|
||||
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
|
||||
fpu_sp:1, fpu_dp:1, pad2:6,
|
||||
debug:1, ap:1, smart:1, rtt:1, pad3:4,
|
||||
pad4:8;
|
||||
} extn;
|
||||
struct bcr_mpy extn_mpy;
|
||||
struct bcr_extn_xymem extn_xymem;
|
||||
struct bcr_extn_mac_mul extn_mac_mul;
|
||||
struct bcr_fp fp, dpfp;
|
||||
};
|
||||
|
||||
extern struct cpuinfo_arc cpuinfo_arc700[];
|
||||
|
||||
#endif /* __ASEMBLY__ */
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _ASM_ARC_ARCREGS_H */
|
||||
|
|
|
|||
|
|
@ -9,8 +9,6 @@
|
|||
#ifndef _ASM_ARC_ATOMIC_H
|
||||
#define _ASM_ARC_ATOMIC_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#include <linux/types.h>
|
||||
|
|
@ -170,5 +168,3 @@ ATOMIC_OP(and, &=, and)
|
|||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -13,8 +13,6 @@
|
|||
#error only <linux/bitops.h> can be included directly
|
||||
#endif
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#include <linux/types.h>
|
||||
|
|
@ -508,6 +506,4 @@ static inline __attribute__ ((const)) int __ffs(unsigned long word)
|
|||
|
||||
#endif /* !__ASSEMBLY__ */
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -21,10 +21,9 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs,
|
|||
unsigned long address);
|
||||
void die(const char *str, struct pt_regs *regs, unsigned long address);
|
||||
|
||||
#define BUG() do { \
|
||||
dump_stack(); \
|
||||
pr_warn("Kernel BUG in %s: %s: %d!\n", \
|
||||
__FILE__, __func__, __LINE__); \
|
||||
#define BUG() do { \
|
||||
pr_warn("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
|
||||
dump_stack(); \
|
||||
} while (0)
|
||||
|
||||
#define HAVE_ARCH_BUG
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@
|
|||
#define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1))
|
||||
|
||||
/*
|
||||
* ARC700 doesn't cache any access in top 256M.
|
||||
* ARC700 doesn't cache any access in top 1G (0xc000_0000 to 0xFFFF_FFFF)
|
||||
* Ideal for wiring memory mapped peripherals as we don't need to do
|
||||
* explicit uncached accesses (LD.di/ST.di) hence more portable drivers
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -12,8 +12,6 @@
|
|||
#ifndef _ASM_ARC_CURRENT_H
|
||||
#define _ASM_ARC_CURRENT_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#ifdef CONFIG_ARC_CURR_IN_REG
|
||||
|
|
@ -27,6 +25,4 @@ register struct task_struct *curr_arc asm("r25");
|
|||
|
||||
#endif /* ! __ASSEMBLY__ */
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _ASM_ARC_CURRENT_H */
|
||||
|
|
|
|||
|
|
@ -15,8 +15,6 @@
|
|||
* -Conditionally disable interrupts (if they are not enabled, don't disable)
|
||||
*/
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#include <asm/arcregs.h>
|
||||
|
||||
/* status32 Reg bits related to Interrupt Handling */
|
||||
|
|
@ -169,6 +167,4 @@ static inline int arch_irqs_disabled(void)
|
|||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#endif /* KERNEL */
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -19,7 +19,7 @@
|
|||
* register API yet */
|
||||
#undef DBG_MAX_REG_NUM
|
||||
|
||||
#define GDB_MAX_REGS 39
|
||||
#define GDB_MAX_REGS 87
|
||||
|
||||
#define BREAK_INSTR_SIZE 2
|
||||
#define CACHE_FLUSH_IS_SAFE 1
|
||||
|
|
@ -33,23 +33,27 @@ static inline void arch_kgdb_breakpoint(void)
|
|||
|
||||
extern void kgdb_trap(struct pt_regs *regs);
|
||||
|
||||
enum arc700_linux_regnums {
|
||||
/* This is the numbering of registers according to the GDB. See GDB's
|
||||
* arc-tdep.h for details.
|
||||
*
|
||||
* Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */
|
||||
enum arc_linux_regnums {
|
||||
_R0 = 0,
|
||||
_R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13,
|
||||
_R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24,
|
||||
_R25, _R26,
|
||||
_BTA = 27,
|
||||
_LP_START = 28,
|
||||
_LP_END = 29,
|
||||
_LP_COUNT = 30,
|
||||
_STATUS32 = 31,
|
||||
_BLINK = 32,
|
||||
_FP = 33,
|
||||
__SP = 34,
|
||||
_EFA = 35,
|
||||
_RET = 36,
|
||||
_ORIG_R8 = 37,
|
||||
_STOP_PC = 38
|
||||
_FP = 27,
|
||||
__SP = 28,
|
||||
_R30 = 30,
|
||||
_BLINK = 31,
|
||||
_LP_COUNT = 60,
|
||||
_STOP_PC = 64,
|
||||
_RET = 64,
|
||||
_LP_START = 65,
|
||||
_LP_END = 66,
|
||||
_STATUS32 = 67,
|
||||
_ECR = 76,
|
||||
_BTA = 82,
|
||||
};
|
||||
|
||||
#else
|
||||
|
|
|
|||
|
|
@ -14,12 +14,19 @@
|
|||
#ifndef __ASM_ARC_PROCESSOR_H
|
||||
#define __ASM_ARC_PROCESSOR_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#include <asm/ptrace.h>
|
||||
|
||||
#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
|
||||
/* These DPFP regs need to be saved/restored across ctx-sw */
|
||||
struct arc_fpu {
|
||||
struct {
|
||||
unsigned int l, h;
|
||||
} aux_dpfp[2];
|
||||
};
|
||||
#endif
|
||||
|
||||
/* Arch specific stuff which needs to be saved per task.
|
||||
* However these items are not so important so as to earn a place in
|
||||
* struct thread_info
|
||||
|
|
@ -128,6 +135,4 @@ extern unsigned int get_wchan(struct task_struct *p);
|
|||
*/
|
||||
#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* __ASM_ARC_PROCESSOR_H */
|
||||
|
|
|
|||
|
|
@ -29,7 +29,6 @@ struct cpuinfo_data {
|
|||
};
|
||||
|
||||
extern int root_mountflags, end_mem;
|
||||
extern int running_on_hw;
|
||||
|
||||
void setup_processor(void);
|
||||
void __init setup_arch_memory(void);
|
||||
|
|
|
|||
|
|
@ -59,7 +59,15 @@ struct plat_smp_ops {
|
|||
/* TBD: stop exporting it for direct population by platform */
|
||||
extern struct plat_smp_ops plat_smp_ops;
|
||||
|
||||
#endif /* CONFIG_SMP */
|
||||
#else /* CONFIG_SMP */
|
||||
|
||||
static inline void smp_init_cpus(void) {}
|
||||
static inline const char *arc_platform_smp_cpuinfo(void)
|
||||
{
|
||||
return "";
|
||||
}
|
||||
|
||||
#endif /* !CONFIG_SMP */
|
||||
|
||||
/*
|
||||
* ARC700 doesn't support atomic Read-Modify-Write ops.
|
||||
|
|
|
|||
|
|
@ -17,8 +17,6 @@
|
|||
|
||||
#include <linux/types.h>
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#define __HAVE_ARCH_MEMSET
|
||||
#define __HAVE_ARCH_MEMCPY
|
||||
#define __HAVE_ARCH_MEMCMP
|
||||
|
|
@ -36,5 +34,4 @@ extern char *strcpy(char *dest, const char *src);
|
|||
extern int strcmp(const char *cs, const char *ct);
|
||||
extern __kernel_size_t strlen(const char *);
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
#endif /* _ASM_ARC_STRING_H */
|
||||
|
|
|
|||
|
|
@ -9,8 +9,6 @@
|
|||
#ifndef _ASM_ARC_SYSCALLS_H
|
||||
#define _ASM_ARC_SYSCALLS_H 1
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/linkage.h>
|
||||
#include <linux/types.h>
|
||||
|
|
@ -22,6 +20,4 @@ int sys_arc_gettls(void);
|
|||
|
||||
#include <asm-generic/syscalls.h>
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -16,8 +16,6 @@
|
|||
#ifndef _ASM_THREAD_INFO_H
|
||||
#define _ASM_THREAD_INFO_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#include <asm/page.h>
|
||||
|
||||
#ifdef CONFIG_16KSTACKS
|
||||
|
|
@ -114,6 +112,4 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void)
|
|||
* syscall, so all that reamins to be tested is _TIF_WORK_MASK
|
||||
*/
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _ASM_THREAD_INFO_H */
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@
|
|||
#include <asm-generic/unaligned.h>
|
||||
#include <asm/ptrace.h>
|
||||
|
||||
#ifdef CONFIG_ARC_MISALIGN_ACCESS
|
||||
#ifdef CONFIG_ARC_EMUL_UNALIGNED
|
||||
int misaligned_fixup(unsigned long address, struct pt_regs *regs,
|
||||
struct callee_regs *cregs);
|
||||
#else
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@ obj-$(CONFIG_MODULES) += arcksyms.o module.o
|
|||
obj-$(CONFIG_SMP) += smp.o
|
||||
obj-$(CONFIG_ARC_DW2_UNWIND) += unwind.o
|
||||
obj-$(CONFIG_KPROBES) += kprobes.o
|
||||
obj-$(CONFIG_ARC_MISALIGN_ACCESS) += unaligned.o
|
||||
obj-$(CONFIG_ARC_EMUL_UNALIGNED) += unaligned.o
|
||||
obj-$(CONFIG_KGDB) += kgdb.o
|
||||
obj-$(CONFIG_ARC_METAWARE_HLINK) += arc_hostlink.o
|
||||
obj-$(CONFIG_PERF_EVENTS) += perf_event.o
|
||||
|
|
|
|||
|
|
@ -15,7 +15,7 @@
|
|||
#include <linux/uaccess.h>
|
||||
#include <asm/disasm.h>
|
||||
|
||||
#if defined(CONFIG_KGDB) || defined(CONFIG_ARC_MISALIGN_ACCESS) || \
|
||||
#if defined(CONFIG_KGDB) || defined(CONFIG_ARC_EMUL_UNALIGNED) || \
|
||||
defined(CONFIG_KPROBES)
|
||||
|
||||
/* disasm_instr: Analyses instruction at addr, stores
|
||||
|
|
@ -535,4 +535,4 @@ int __kprobes disasm_next_pc(unsigned long pc, struct pt_regs *regs,
|
|||
return instr.is_branch;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_KGDB || CONFIG_ARC_MISALIGN_ACCESS || CONFIG_KPROBES */
|
||||
#endif /* CONFIG_KGDB || CONFIG_ARC_EMUL_UNALIGNED || CONFIG_KPROBES */
|
||||
|
|
|
|||
|
|
@ -91,16 +91,6 @@ stext:
|
|||
st r0, [@uboot_tag]
|
||||
st r2, [@uboot_arg]
|
||||
|
||||
; Identify if running on ISS vs Silicon
|
||||
; IDENTITY Reg [ 3 2 1 0 ]
|
||||
; (chip-id) ^^^^^ ==> 0xffff for ISS
|
||||
lr r0, [identity]
|
||||
lsr r3, r0, 16
|
||||
cmp r3, 0xffff
|
||||
mov.z r4, 0
|
||||
mov.nz r4, 1
|
||||
st r4, [@running_on_hw]
|
||||
|
||||
; setup "current" tsk and optionally cache it in dedicated r25
|
||||
mov r9, @init_task
|
||||
SET_CURR_TASK_ON_CPU r9, r0 ; r9 = tsk, r0 = scratch
|
||||
|
|
|
|||
|
|
@ -158,11 +158,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
|
|||
return -1;
|
||||
}
|
||||
|
||||
unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs)
|
||||
{
|
||||
return instruction_pointer(regs);
|
||||
}
|
||||
|
||||
int kgdb_arch_init(void)
|
||||
{
|
||||
single_step_data.armed = 0;
|
||||
|
|
|
|||
|
|
@ -244,25 +244,23 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
|
|||
pr_err("This core does not have performance counters!\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
BUG_ON(pct_bcr.c > ARC_PMU_MAX_HWEVENTS);
|
||||
|
||||
arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu),
|
||||
GFP_KERNEL);
|
||||
READ_BCR(ARC_REG_CC_BUILD, cc_bcr);
|
||||
if (!cc_bcr.v) {
|
||||
pr_err("Performance counters exist, but no countable conditions?\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu), GFP_KERNEL);
|
||||
if (!arc_pmu)
|
||||
return -ENOMEM;
|
||||
|
||||
arc_pmu->n_counters = pct_bcr.c;
|
||||
BUG_ON(arc_pmu->n_counters > ARC_PMU_MAX_HWEVENTS);
|
||||
|
||||
arc_pmu->counter_size = 32 + (pct_bcr.s << 4);
|
||||
pr_info("ARC PMU found with %d counters of size %d bits\n",
|
||||
arc_pmu->n_counters, arc_pmu->counter_size);
|
||||
|
||||
READ_BCR(ARC_REG_CC_BUILD, cc_bcr);
|
||||
|
||||
if (!cc_bcr.v)
|
||||
pr_err("Strange! Performance counters exist, but no countable conditions?\n");
|
||||
|
||||
pr_info("ARC PMU has %d countable conditions\n", cc_bcr.c);
|
||||
pr_info("ARC perf\t: %d counters (%d bits), %d countable conditions\n",
|
||||
arc_pmu->n_counters, arc_pmu->counter_size, cc_bcr.c);
|
||||
|
||||
cc_name.str[8] = 0;
|
||||
for (i = 0; i < PERF_COUNT_HW_MAX; i++)
|
||||
|
|
|
|||
|
|
@ -13,7 +13,9 @@
|
|||
#include <linux/console.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/cpu.h>
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/of_fdt.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/cache.h>
|
||||
#include <asm/sections.h>
|
||||
#include <asm/arcregs.h>
|
||||
|
|
@ -24,11 +26,10 @@
|
|||
#include <asm/unwind.h>
|
||||
#include <asm/clk.h>
|
||||
#include <asm/mach_desc.h>
|
||||
#include <asm/smp.h>
|
||||
|
||||
#define FIX_PTR(x) __asm__ __volatile__(";" : "+r"(x))
|
||||
|
||||
int running_on_hw = 1; /* vs. on ISS */
|
||||
|
||||
/* Part of U-boot ABI: see head.S */
|
||||
int __initdata uboot_tag;
|
||||
char __initdata *uboot_arg;
|
||||
|
|
@ -42,26 +43,26 @@ struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
|
|||
static void read_arc_build_cfg_regs(void)
|
||||
{
|
||||
struct bcr_perip uncached_space;
|
||||
struct bcr_generic bcr;
|
||||
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
|
||||
FIX_PTR(cpu);
|
||||
|
||||
READ_BCR(AUX_IDENTITY, cpu->core);
|
||||
READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa);
|
||||
|
||||
cpu->timers = read_aux_reg(ARC_REG_TIMERS_BCR);
|
||||
READ_BCR(ARC_REG_TIMERS_BCR, cpu->timers);
|
||||
cpu->vec_base = read_aux_reg(AUX_INTR_VEC_BASE);
|
||||
|
||||
READ_BCR(ARC_REG_D_UNCACH_BCR, uncached_space);
|
||||
cpu->uncached_base = uncached_space.start << 24;
|
||||
|
||||
cpu->extn.mul = read_aux_reg(ARC_REG_MUL_BCR);
|
||||
cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR);
|
||||
cpu->extn.norm = read_aux_reg(ARC_REG_NORM_BCR);
|
||||
cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR);
|
||||
cpu->extn.barrel = read_aux_reg(ARC_REG_BARREL_BCR);
|
||||
READ_BCR(ARC_REG_MAC_BCR, cpu->extn_mac_mul);
|
||||
READ_BCR(ARC_REG_MUL_BCR, cpu->extn_mpy);
|
||||
|
||||
cpu->extn.ext_arith = read_aux_reg(ARC_REG_EXTARITH_BCR);
|
||||
cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR);
|
||||
cpu->extn.norm = read_aux_reg(ARC_REG_NORM_BCR) > 1 ? 1 : 0; /* 2,3 */
|
||||
cpu->extn.barrel = read_aux_reg(ARC_REG_BARREL_BCR) > 1 ? 1 : 0; /* 2,3 */
|
||||
cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0; /* 1,3 */
|
||||
cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0;
|
||||
cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */
|
||||
|
||||
/* Note that we read the CCM BCRs independent of kernel config
|
||||
* This is to catch the cases where user doesn't know that
|
||||
|
|
@ -95,43 +96,76 @@ static void read_arc_build_cfg_regs(void)
|
|||
read_decode_mmu_bcr();
|
||||
read_decode_cache_bcr();
|
||||
|
||||
READ_BCR(ARC_REG_FP_BCR, cpu->fp);
|
||||
READ_BCR(ARC_REG_DPFP_BCR, cpu->dpfp);
|
||||
{
|
||||
struct bcr_fp_arcompact sp, dp;
|
||||
struct bcr_bpu_arcompact bpu;
|
||||
|
||||
READ_BCR(ARC_REG_FP_BCR, sp);
|
||||
READ_BCR(ARC_REG_DPFP_BCR, dp);
|
||||
cpu->extn.fpu_sp = sp.ver ? 1 : 0;
|
||||
cpu->extn.fpu_dp = dp.ver ? 1 : 0;
|
||||
|
||||
READ_BCR(ARC_REG_BPU_BCR, bpu);
|
||||
cpu->bpu.ver = bpu.ver;
|
||||
cpu->bpu.full = bpu.fam ? 1 : 0;
|
||||
if (bpu.ent) {
|
||||
cpu->bpu.num_cache = 256 << (bpu.ent - 1);
|
||||
cpu->bpu.num_pred = 256 << (bpu.ent - 1);
|
||||
}
|
||||
}
|
||||
|
||||
READ_BCR(ARC_REG_AP_BCR, bcr);
|
||||
cpu->extn.ap = bcr.ver ? 1 : 0;
|
||||
|
||||
READ_BCR(ARC_REG_SMART_BCR, bcr);
|
||||
cpu->extn.smart = bcr.ver ? 1 : 0;
|
||||
|
||||
cpu->extn.debug = cpu->extn.ap | cpu->extn.smart;
|
||||
}
|
||||
|
||||
static const struct cpuinfo_data arc_cpu_tbl[] = {
|
||||
{ {0x10, "ARCTangent A5"}, 0x1F},
|
||||
{ {0x20, "ARC 600" }, 0x2F},
|
||||
{ {0x30, "ARC 700" }, 0x33},
|
||||
{ {0x34, "ARC 700 R4.10"}, 0x34},
|
||||
{ {0x35, "ARC 700 R4.11"}, 0x35},
|
||||
{ {0x00, NULL } }
|
||||
};
|
||||
|
||||
#define IS_AVAIL1(v, str) ((v) ? str : "")
|
||||
#define IS_USED(cfg) (IS_ENABLED(cfg) ? "" : "(not used) ")
|
||||
#define IS_AVAIL2(v, str, cfg) IS_AVAIL1(v, str), IS_AVAIL1(v, IS_USED(cfg))
|
||||
|
||||
static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
|
||||
{
|
||||
int n = 0;
|
||||
struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
|
||||
struct bcr_identity *core = &cpu->core;
|
||||
const struct cpuinfo_data *tbl;
|
||||
int be = 0;
|
||||
#ifdef CONFIG_CPU_BIG_ENDIAN
|
||||
be = 1;
|
||||
#endif
|
||||
char *isa_nm;
|
||||
int i, be, atomic;
|
||||
int n = 0;
|
||||
|
||||
FIX_PTR(cpu);
|
||||
|
||||
{
|
||||
isa_nm = "ARCompact";
|
||||
be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
|
||||
|
||||
atomic = cpu->isa.atomic1;
|
||||
if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */
|
||||
atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
|
||||
}
|
||||
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"\nARC IDENTITY\t: Family [%#02x]"
|
||||
" Cpu-id [%#02x] Chip-id [%#4x]\n",
|
||||
core->family, core->cpu_id,
|
||||
core->chip_id);
|
||||
"\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n",
|
||||
core->family, core->cpu_id, core->chip_id);
|
||||
|
||||
for (tbl = &arc_cpu_tbl[0]; tbl->info.id != 0; tbl++) {
|
||||
if ((core->family >= tbl->info.id) &&
|
||||
(core->family <= tbl->up_range)) {
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"processor\t: %s %s\n",
|
||||
tbl->info.str,
|
||||
be ? "[Big Endian]" : "");
|
||||
"processor [%d]\t: %s (%s ISA) %s\n",
|
||||
cpu_id, tbl->info.str, isa_nm,
|
||||
IS_AVAIL1(be, "[Big-Endian]"));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
@ -143,102 +177,82 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
|
|||
(unsigned int)(arc_get_core_freq() / 1000000),
|
||||
(unsigned int)(arc_get_core_freq() / 10000) % 100);
|
||||
|
||||
n += scnprintf(buf + n, len - n, "Timers\t\t: %s %s\n",
|
||||
(cpu->timers & 0x200) ? "TIMER1" : "",
|
||||
(cpu->timers & 0x100) ? "TIMER0" : "");
|
||||
n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
|
||||
IS_AVAIL1(cpu->timers.t0, "Timer0 "),
|
||||
IS_AVAIL1(cpu->timers.t1, "Timer1 "),
|
||||
IS_AVAIL2(cpu->timers.rtsc, "64-bit RTSC ", CONFIG_ARC_HAS_RTSC));
|
||||
|
||||
n += scnprintf(buf + n, len - n, "Vect Tbl Base\t: %#x\n",
|
||||
cpu->vec_base);
|
||||
n += i = scnprintf(buf + n, len - n, "%s%s",
|
||||
IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC));
|
||||
|
||||
n += scnprintf(buf + n, len - n, "UNCACHED Base\t: %#x\n",
|
||||
cpu->uncached_base);
|
||||
if (i)
|
||||
n += scnprintf(buf + n, len - n, "\n\t\t: ");
|
||||
|
||||
n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n",
|
||||
IS_AVAIL1(cpu->extn_mpy.ver, "mpy "),
|
||||
IS_AVAIL1(cpu->extn.norm, "norm "),
|
||||
IS_AVAIL1(cpu->extn.barrel, "barrel-shift "),
|
||||
IS_AVAIL1(cpu->extn.swap, "swap "),
|
||||
IS_AVAIL1(cpu->extn.minmax, "minmax "),
|
||||
IS_AVAIL1(cpu->extn.crc, "crc "),
|
||||
IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE));
|
||||
|
||||
if (cpu->bpu.ver)
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"BPU\t\t: %s%s match, cache:%d, Predict Table:%d\n",
|
||||
IS_AVAIL1(cpu->bpu.full, "full"),
|
||||
IS_AVAIL1(!cpu->bpu.full, "partial"),
|
||||
cpu->bpu.num_cache, cpu->bpu.num_pred);
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
static const struct id_to_str mul_type_nm[] = {
|
||||
{ 0x0, "N/A"},
|
||||
{ 0x1, "32x32 (spl Result Reg)" },
|
||||
{ 0x2, "32x32 (ANY Result Reg)" }
|
||||
};
|
||||
|
||||
static const struct id_to_str mac_mul_nm[] = {
|
||||
{0x0, "N/A"},
|
||||
{0x1, "N/A"},
|
||||
{0x2, "Dual 16 x 16"},
|
||||
{0x3, "N/A"},
|
||||
{0x4, "32x16"},
|
||||
{0x5, "N/A"},
|
||||
{0x6, "Dual 16x16 and 32x16"}
|
||||
};
|
||||
|
||||
static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
|
||||
{
|
||||
int n = 0;
|
||||
struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
|
||||
|
||||
FIX_PTR(cpu);
|
||||
#define IS_AVAIL1(var, str) ((var) ? str : "")
|
||||
#define IS_AVAIL2(var, str) ((var == 0x2) ? str : "")
|
||||
#define IS_USED(cfg) (IS_ENABLED(cfg) ? "(in-use)" : "(not used)")
|
||||
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"Extn [700-Base]\t: %s %s %s %s %s %s\n",
|
||||
IS_AVAIL2(cpu->extn.norm, "norm,"),
|
||||
IS_AVAIL2(cpu->extn.barrel, "barrel-shift,"),
|
||||
IS_AVAIL1(cpu->extn.swap, "swap,"),
|
||||
IS_AVAIL2(cpu->extn.minmax, "minmax,"),
|
||||
IS_AVAIL1(cpu->extn.crc, "crc,"),
|
||||
IS_AVAIL2(cpu->extn.ext_arith, "ext-arith"));
|
||||
"Vector Table\t: %#x\nUncached Base\t: %#x\n",
|
||||
cpu->vec_base, cpu->uncached_base);
|
||||
|
||||
n += scnprintf(buf + n, len - n, "Extn [700-MPY]\t: %s",
|
||||
mul_type_nm[cpu->extn.mul].str);
|
||||
if (cpu->extn.fpu_sp || cpu->extn.fpu_dp)
|
||||
n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n",
|
||||
IS_AVAIL1(cpu->extn.fpu_sp, "SP "),
|
||||
IS_AVAIL1(cpu->extn.fpu_dp, "DP "));
|
||||
|
||||
n += scnprintf(buf + n, len - n, " MAC MPY: %s\n",
|
||||
mac_mul_nm[cpu->extn_mac_mul.type].str);
|
||||
if (cpu->extn.debug)
|
||||
n += scnprintf(buf + n, len - n, "DEBUG\t\t: %s%s%s\n",
|
||||
IS_AVAIL1(cpu->extn.ap, "ActionPoint "),
|
||||
IS_AVAIL1(cpu->extn.smart, "smaRT "),
|
||||
IS_AVAIL1(cpu->extn.rtt, "RTT "));
|
||||
|
||||
if (cpu->core.family == 0x34) {
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"Extn [700-4.10]\t: LLOCK/SCOND %s, SWAPE %s, RTSC %s\n",
|
||||
IS_USED(CONFIG_ARC_HAS_LLSC),
|
||||
IS_USED(CONFIG_ARC_HAS_SWAPE),
|
||||
IS_USED(CONFIG_ARC_HAS_RTSC));
|
||||
}
|
||||
|
||||
n += scnprintf(buf + n, len - n, "Extn [CCM]\t: %s",
|
||||
!(cpu->dccm.sz || cpu->iccm.sz) ? "N/A" : "");
|
||||
|
||||
if (cpu->dccm.sz)
|
||||
n += scnprintf(buf + n, len - n, "DCCM: @ %x, %d KB ",
|
||||
cpu->dccm.base_addr, TO_KB(cpu->dccm.sz));
|
||||
|
||||
if (cpu->iccm.sz)
|
||||
n += scnprintf(buf + n, len - n, "ICCM: @ %x, %d KB",
|
||||
if (cpu->dccm.sz || cpu->iccm.sz)
|
||||
n += scnprintf(buf + n, len - n, "Extn [CCM]\t: DCCM @ %x, %d KB / ICCM: @ %x, %d KB\n",
|
||||
cpu->dccm.base_addr, TO_KB(cpu->dccm.sz),
|
||||
cpu->iccm.base_addr, TO_KB(cpu->iccm.sz));
|
||||
|
||||
n += scnprintf(buf + n, len - n, "\nExtn [FPU]\t: %s",
|
||||
!(cpu->fp.ver || cpu->dpfp.ver) ? "N/A" : "");
|
||||
|
||||
if (cpu->fp.ver)
|
||||
n += scnprintf(buf + n, len - n, "SP [v%d] %s",
|
||||
cpu->fp.ver, cpu->fp.fast ? "(fast)" : "");
|
||||
|
||||
if (cpu->dpfp.ver)
|
||||
n += scnprintf(buf + n, len - n, "DP [v%d] %s",
|
||||
cpu->dpfp.ver, cpu->dpfp.fast ? "(fast)" : "");
|
||||
|
||||
n += scnprintf(buf + n, len - n, "\n");
|
||||
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"OS ABI [v3]\t: no-legacy-syscalls\n");
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
static void arc_chk_ccms(void)
|
||||
static void arc_chk_core_config(void)
|
||||
{
|
||||
#if defined(CONFIG_ARC_HAS_DCCM) || defined(CONFIG_ARC_HAS_ICCM)
|
||||
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
|
||||
int fpu_enabled;
|
||||
|
||||
if (!cpu->timers.t0)
|
||||
panic("Timer0 is not present!\n");
|
||||
|
||||
if (!cpu->timers.t1)
|
||||
panic("Timer1 is not present!\n");
|
||||
|
||||
if (IS_ENABLED(CONFIG_ARC_HAS_RTSC) && !cpu->timers.rtsc)
|
||||
panic("RTSC is not present\n");
|
||||
|
||||
#ifdef CONFIG_ARC_HAS_DCCM
|
||||
/*
|
||||
|
|
@ -256,33 +270,20 @@ static void arc_chk_ccms(void)
|
|||
if (CONFIG_ARC_ICCM_SZ != cpu->iccm.sz)
|
||||
panic("Linux built with incorrect ICCM Size\n");
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* Ensure that FP hardware and kernel config match
|
||||
* -If hardware contains DPFP, kernel needs to save/restore FPU state
|
||||
* across context switches
|
||||
* -If hardware lacks DPFP, but kernel configured to save FPU state then
|
||||
* kernel trying to access non-existant DPFP regs will crash
|
||||
*
|
||||
* We only check for Dbl precision Floating Point, because only DPFP
|
||||
* hardware has dedicated regs which need to be saved/restored on ctx-sw
|
||||
* (Single Precision uses core regs), thus kernel is kind of oblivious to it
|
||||
*/
|
||||
static void arc_chk_fpu(void)
|
||||
{
|
||||
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
|
||||
/*
|
||||
* FP hardware/software config sanity
|
||||
* -If hardware contains DPFP, kernel needs to save/restore FPU state
|
||||
* -If not, it will crash trying to save/restore the non-existant regs
|
||||
*
|
||||
* (only DPDP checked since SP has no arch visible regs)
|
||||
*/
|
||||
fpu_enabled = IS_ENABLED(CONFIG_ARC_FPU_SAVE_RESTORE);
|
||||
|
||||
if (cpu->dpfp.ver) {
|
||||
#ifndef CONFIG_ARC_FPU_SAVE_RESTORE
|
||||
pr_warn("DPFP support broken in this kernel...\n");
|
||||
#endif
|
||||
} else {
|
||||
#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
|
||||
panic("H/w lacks DPFP support, apps won't work\n");
|
||||
#endif
|
||||
}
|
||||
if (cpu->extn.fpu_dp && !fpu_enabled)
|
||||
pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n");
|
||||
else if (!cpu->extn.fpu_dp && fpu_enabled)
|
||||
panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n");
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -303,15 +304,11 @@ void setup_processor(void)
|
|||
|
||||
arc_mmu_init();
|
||||
arc_cache_init();
|
||||
arc_chk_ccms();
|
||||
|
||||
printk(arc_extn_mumbojumbo(cpu_id, str, sizeof(str)));
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
printk(arc_platform_smp_cpuinfo());
|
||||
#endif
|
||||
|
||||
arc_chk_fpu();
|
||||
arc_chk_core_config();
|
||||
}
|
||||
|
||||
static inline int is_kernel(unsigned long addr)
|
||||
|
|
@ -360,11 +357,7 @@ void __init setup_arch(char **cmdline_p)
|
|||
machine_desc->init_early();
|
||||
|
||||
setup_processor();
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
smp_init_cpus();
|
||||
#endif
|
||||
|
||||
setup_arch_memory();
|
||||
|
||||
/* copy flat DT out of .init and then unflatten it */
|
||||
|
|
@ -385,7 +378,13 @@ void __init setup_arch(char **cmdline_p)
|
|||
|
||||
static int __init customize_machine(void)
|
||||
{
|
||||
/* Add platform devices */
|
||||
of_clk_init(NULL);
|
||||
/*
|
||||
* Traverses flattened DeviceTree - registering platform devices
|
||||
* (if any) complete with their resources
|
||||
*/
|
||||
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
|
||||
|
||||
if (machine_desc->init_machine)
|
||||
machine_desc->init_machine();
|
||||
|
||||
|
|
@ -419,19 +418,14 @@ static int show_cpuinfo(struct seq_file *m, void *v)
|
|||
|
||||
seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE));
|
||||
|
||||
seq_printf(m, "Bogo MIPS : \t%lu.%02lu\n",
|
||||
seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n",
|
||||
loops_per_jiffy / (500000 / HZ),
|
||||
(loops_per_jiffy / (5000 / HZ)) % 100);
|
||||
|
||||
seq_printf(m, arc_mmu_mumbojumbo(cpu_id, str, PAGE_SIZE));
|
||||
|
||||
seq_printf(m, arc_cache_mumbojumbo(cpu_id, str, PAGE_SIZE));
|
||||
|
||||
seq_printf(m, arc_extn_mumbojumbo(cpu_id, str, PAGE_SIZE));
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
seq_printf(m, arc_platform_smp_cpuinfo());
|
||||
#endif
|
||||
|
||||
free_page((unsigned long)str);
|
||||
done:
|
||||
|
|
|
|||
|
|
@ -101,7 +101,7 @@ void __weak arc_platform_smp_wait_to_boot(int cpu)
|
|||
|
||||
const char *arc_platform_smp_cpuinfo(void)
|
||||
{
|
||||
return plat_smp_ops.info;
|
||||
return plat_smp_ops.info ? : "";
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -530,16 +530,9 @@ EXPORT_SYMBOL(dma_cache_wback);
|
|||
*/
|
||||
void flush_icache_range(unsigned long kstart, unsigned long kend)
|
||||
{
|
||||
unsigned int tot_sz, off, sz;
|
||||
unsigned long phy, pfn;
|
||||
unsigned int tot_sz;
|
||||
|
||||
/* printk("Kernel Cache Cohenercy: %lx to %lx\n",kstart, kend); */
|
||||
|
||||
/* This is not the right API for user virtual address */
|
||||
if (kstart < TASK_SIZE) {
|
||||
BUG_ON("Flush icache range for user virtual addr space");
|
||||
return;
|
||||
}
|
||||
WARN(kstart < TASK_SIZE, "%s() can't handle user vaddr", __func__);
|
||||
|
||||
/* Shortcut for bigger flush ranges.
|
||||
* Here we don't care if this was kernel virtual or phy addr
|
||||
|
|
@ -572,6 +565,9 @@ void flush_icache_range(unsigned long kstart, unsigned long kend)
|
|||
* straddles across 2 virtual pages and hence need for loop
|
||||
*/
|
||||
while (tot_sz > 0) {
|
||||
unsigned int off, sz;
|
||||
unsigned long phy, pfn;
|
||||
|
||||
off = kstart % PAGE_SIZE;
|
||||
pfn = vmalloc_to_pfn((void *)kstart);
|
||||
phy = (pfn << PAGE_SHIFT) + off;
|
||||
|
|
|
|||
|
|
@ -609,14 +609,12 @@ char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len)
|
|||
int n = 0;
|
||||
struct cpuinfo_arc_mmu *p_mmu = &cpuinfo_arc700[cpu_id].mmu;
|
||||
|
||||
n += scnprintf(buf + n, len - n, "ARC700 MMU [v%x]\t: %dk PAGE, ",
|
||||
p_mmu->ver, TO_KB(p_mmu->pg_sz));
|
||||
|
||||
n += scnprintf(buf + n, len - n,
|
||||
"J-TLB %d (%dx%d), uDTLB %d, uITLB %d, %s\n",
|
||||
"MMU [v%x]\t: %dk PAGE, JTLB %d (%dx%d), uDTLB %d, uITLB %d %s\n",
|
||||
p_mmu->ver, TO_KB(p_mmu->pg_sz),
|
||||
p_mmu->num_tlb, p_mmu->sets, p_mmu->ways,
|
||||
p_mmu->u_dtlb, p_mmu->u_itlb,
|
||||
IS_ENABLED(CONFIG_ARC_MMU_SASID) ? "SASID" : "");
|
||||
IS_ENABLED(CONFIG_ARC_MMU_SASID) ? ",SASID" : "");
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
|
||||
menuconfig ARC_PLAT_FPGA_LEGACY
|
||||
bool "\"Legacy\" ARC FPGA dev Boards"
|
||||
select ISS_SMP_EXTN if SMP
|
||||
select ARC_HAS_COH_CACHES if SMP
|
||||
help
|
||||
Support for ARC development boards, provided by Synopsys.
|
||||
These are based on FPGA or ISS. e.g.
|
||||
|
|
@ -18,17 +18,6 @@ menuconfig ARC_PLAT_FPGA_LEGACY
|
|||
|
||||
if ARC_PLAT_FPGA_LEGACY
|
||||
|
||||
config ARC_BOARD_ANGEL4
|
||||
bool "ARC Angel4"
|
||||
default y
|
||||
help
|
||||
ARC Angel4 FPGA Ref Platform (Xilinx Virtex Based)
|
||||
|
||||
config ARC_BOARD_ML509
|
||||
bool "ML509"
|
||||
help
|
||||
ARC ML509 FPGA Ref Platform (Xilinx Virtex-5 Based)
|
||||
|
||||
config ISS_SMP_EXTN
|
||||
bool "ARC SMP Extensions (ISS Models only)"
|
||||
default n
|
||||
|
|
|
|||
|
|
@ -1,27 +0,0 @@
|
|||
/*
|
||||
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* vineetg: Feb 2009
|
||||
* -For AA4 board, IRQ assignments to peripherals
|
||||
*/
|
||||
|
||||
#ifndef __PLAT_IRQ_H
|
||||
#define __PLAT_IRQ_H
|
||||
|
||||
#define UART0_IRQ 5
|
||||
#define UART1_IRQ 10
|
||||
#define UART2_IRQ 11
|
||||
|
||||
#define IDE_IRQ 13
|
||||
#define PCI_IRQ 14
|
||||
#define PS2_IRQ 15
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
#define IDU_INTERRUPT_0 16
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
/*
|
||||
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* vineetg: Feb 2009
|
||||
* -For AA4 board, System Memory Map for Peripherals etc
|
||||
*/
|
||||
|
||||
#ifndef __PLAT_MEMMAP_H
|
||||
#define __PLAT_MEMMAP_H
|
||||
|
||||
#define UART0_BASE 0xC0FC1000
|
||||
#define UART1_BASE 0xC0FC1100
|
||||
|
||||
#define IDE_CONTROLLER_BASE 0xC0FC9000
|
||||
|
||||
#define AHB_PCI_HOST_BRG_BASE 0xC0FD0000
|
||||
|
||||
#define PGU_BASEADDR 0xC0FC8000
|
||||
#define VLCK_ADDR 0xC0FCF028
|
||||
|
||||
#define BVCI_LAT_UNIT_BASE 0xC0FED000
|
||||
|
||||
#define PS2_BASE_ADDR 0xC0FCC000
|
||||
|
||||
#endif
|
||||
|
|
@ -8,37 +8,9 @@
|
|||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/console.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/clk.h>
|
||||
#include <asm/mach_desc.h>
|
||||
#include <plat/memmap.h>
|
||||
#include <plat/smp.h>
|
||||
#include <plat/irq.h>
|
||||
|
||||
static void __init plat_fpga_early_init(void)
|
||||
{
|
||||
pr_info("[plat-arcfpga]: registering early dev resources\n");
|
||||
|
||||
#ifdef CONFIG_ISS_SMP_EXTN
|
||||
iss_model_init_early_smp();
|
||||
#endif
|
||||
}
|
||||
|
||||
static void __init plat_fpga_populate_dev(void)
|
||||
{
|
||||
/*
|
||||
* Traverses flattened DeviceTree - registering platform devices
|
||||
* (if any) complete with their resources
|
||||
*/
|
||||
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
|
||||
}
|
||||
|
||||
/*----------------------- Machine Descriptions ------------------------------
|
||||
*
|
||||
|
|
@ -48,41 +20,26 @@ static void __init plat_fpga_populate_dev(void)
|
|||
* callback set, by matching the DT compatible name.
|
||||
*/
|
||||
|
||||
static const char *aa4_compat[] __initconst = {
|
||||
static const char *legacy_fpga_compat[] __initconst = {
|
||||
"snps,arc-angel4",
|
||||
NULL,
|
||||
};
|
||||
|
||||
MACHINE_START(ANGEL4, "angel4")
|
||||
.dt_compat = aa4_compat,
|
||||
.init_early = plat_fpga_early_init,
|
||||
.init_machine = plat_fpga_populate_dev,
|
||||
#ifdef CONFIG_ISS_SMP_EXTN
|
||||
.init_smp = iss_model_init_smp,
|
||||
#endif
|
||||
MACHINE_END
|
||||
|
||||
static const char *ml509_compat[] __initconst = {
|
||||
"snps,arc-ml509",
|
||||
NULL,
|
||||
};
|
||||
|
||||
MACHINE_START(ML509, "ml509")
|
||||
.dt_compat = ml509_compat,
|
||||
.init_early = plat_fpga_early_init,
|
||||
.init_machine = plat_fpga_populate_dev,
|
||||
#ifdef CONFIG_SMP
|
||||
MACHINE_START(LEGACY_FPGA, "legacy_fpga")
|
||||
.dt_compat = legacy_fpga_compat,
|
||||
#ifdef CONFIG_ISS_SMP_EXTN
|
||||
.init_early = iss_model_init_early_smp,
|
||||
.init_smp = iss_model_init_smp,
|
||||
#endif
|
||||
MACHINE_END
|
||||
|
||||
static const char *nsimosci_compat[] __initconst = {
|
||||
static const char *simulation_compat[] __initconst = {
|
||||
"snps,nsim",
|
||||
"snps,nsimosci",
|
||||
NULL,
|
||||
};
|
||||
|
||||
MACHINE_START(NSIMOSCI, "nsimosci")
|
||||
.dt_compat = nsimosci_compat,
|
||||
.init_early = NULL,
|
||||
.init_machine = plat_fpga_populate_dev,
|
||||
MACHINE_START(SIMULATION, "simulation")
|
||||
.dt_compat = simulation_compat,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -13,9 +13,10 @@
|
|||
|
||||
#include <linux/smp.h>
|
||||
#include <linux/irq.h>
|
||||
#include <plat/irq.h>
|
||||
#include <plat/smp.h>
|
||||
|
||||
#define IDU_INTERRUPT_0 16
|
||||
|
||||
static char smp_cpuinfo_buf[128];
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -18,7 +18,6 @@
|
|||
|
||||
menuconfig ARC_PLAT_TB10X
|
||||
bool "Abilis TB10x"
|
||||
select COMMON_CLK
|
||||
select PINCTRL
|
||||
select PINCTRL_TB10X
|
||||
select PINMUX
|
||||
|
|
|
|||
|
|
@ -19,21 +19,9 @@
|
|||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
|
||||
#include <asm/mach_desc.h>
|
||||
|
||||
|
||||
static void __init tb10x_platform_init(void)
|
||||
{
|
||||
of_clk_init(NULL);
|
||||
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
|
||||
}
|
||||
|
||||
static const char *tb10x_compat[] __initdata = {
|
||||
"abilis,arc-tb10x",
|
||||
NULL,
|
||||
|
|
@ -41,5 +29,4 @@ static const char *tb10x_compat[] __initdata = {
|
|||
|
||||
MACHINE_START(TB10x, "tb10x")
|
||||
.dt_compat = tb10x_compat,
|
||||
.init_machine = tb10x_platform_init,
|
||||
MACHINE_END
|
||||
|
|
|
|||
|
|
@ -1187,7 +1187,7 @@ config DEBUG_UART_VIRT
|
|||
default 0xf1c28000 if DEBUG_SUNXI_UART0
|
||||
default 0xf1c28400 if DEBUG_SUNXI_UART1
|
||||
default 0xf1f02800 if DEBUG_SUNXI_R_UART
|
||||
default 0xf2100000 if DEBUG_PXA_UART1
|
||||
default 0xf6200000 if DEBUG_PXA_UART1
|
||||
default 0xf4090000 if ARCH_LPC32XX
|
||||
default 0xf4200000 if ARCH_GEMINI
|
||||
default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
|
||||
|
|
|
|||
|
|
@ -397,8 +397,7 @@ dtb_check_done:
|
|||
add sp, sp, r6
|
||||
#endif
|
||||
|
||||
tst r4, #1
|
||||
bleq cache_clean_flush
|
||||
bl cache_clean_flush
|
||||
|
||||
adr r0, BSYM(restart)
|
||||
add r0, r0, r6
|
||||
|
|
@ -1047,6 +1046,8 @@ cache_clean_flush:
|
|||
b call_cache_fn
|
||||
|
||||
__armv4_mpu_cache_flush:
|
||||
tst r4, #1
|
||||
movne pc, lr
|
||||
mov r2, #1
|
||||
mov r3, #0
|
||||
mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
|
||||
|
|
@ -1064,6 +1065,8 @@ __armv4_mpu_cache_flush:
|
|||
mov pc, lr
|
||||
|
||||
__fa526_cache_flush:
|
||||
tst r4, #1
|
||||
movne pc, lr
|
||||
mov r1, #0
|
||||
mcr p15, 0, r1, c7, c14, 0 @ clean and invalidate D cache
|
||||
mcr p15, 0, r1, c7, c5, 0 @ flush I cache
|
||||
|
|
@ -1072,13 +1075,16 @@ __fa526_cache_flush:
|
|||
|
||||
__armv6_mmu_cache_flush:
|
||||
mov r1, #0
|
||||
mcr p15, 0, r1, c7, c14, 0 @ clean+invalidate D
|
||||
tst r4, #1
|
||||
mcreq p15, 0, r1, c7, c14, 0 @ clean+invalidate D
|
||||
mcr p15, 0, r1, c7, c5, 0 @ invalidate I+BTB
|
||||
mcr p15, 0, r1, c7, c15, 0 @ clean+invalidate unified
|
||||
mcreq p15, 0, r1, c7, c15, 0 @ clean+invalidate unified
|
||||
mcr p15, 0, r1, c7, c10, 4 @ drain WB
|
||||
mov pc, lr
|
||||
|
||||
__armv7_mmu_cache_flush:
|
||||
tst r4, #1
|
||||
bne iflush
|
||||
mrc p15, 0, r10, c0, c1, 5 @ read ID_MMFR1
|
||||
tst r10, #0xf << 16 @ hierarchical cache (ARMv7)
|
||||
mov r10, #0
|
||||
|
|
@ -1139,6 +1145,8 @@ iflush:
|
|||
mov pc, lr
|
||||
|
||||
__armv5tej_mmu_cache_flush:
|
||||
tst r4, #1
|
||||
movne pc, lr
|
||||
1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate D cache
|
||||
bne 1b
|
||||
mcr p15, 0, r0, c7, c5, 0 @ flush I cache
|
||||
|
|
@ -1146,6 +1154,8 @@ __armv5tej_mmu_cache_flush:
|
|||
mov pc, lr
|
||||
|
||||
__armv4_mmu_cache_flush:
|
||||
tst r4, #1
|
||||
movne pc, lr
|
||||
mov r2, #64*1024 @ default: 32K dcache size (*2)
|
||||
mov r11, #32 @ default: 32 byte line size
|
||||
mrc p15, 0, r3, c0, c0, 1 @ read cache type
|
||||
|
|
@ -1179,6 +1189,8 @@ no_cache_id:
|
|||
|
||||
__armv3_mmu_cache_flush:
|
||||
__armv3_mpu_cache_flush:
|
||||
tst r4, #1
|
||||
movne pc, lr
|
||||
mov r1, #0
|
||||
mcr p15, 0, r1, c7, c0, 0 @ invalidate whole cache v3
|
||||
mov pc, lr
|
||||
|
|
|
|||
|
|
@ -489,7 +489,7 @@ partition@3 {
|
|||
reg = <0x00060000 0x00020000>;
|
||||
};
|
||||
partition@4 {
|
||||
label = "NAND.u-boot-spl";
|
||||
label = "NAND.u-boot-spl-os";
|
||||
reg = <0x00080000 0x00040000>;
|
||||
};
|
||||
partition@5 {
|
||||
|
|
|
|||
|
|
@ -291,8 +291,8 @@ dcdc2: regulator-dcdc2 {
|
|||
dcdc3: regulator-dcdc3 {
|
||||
compatible = "ti,tps65218-dcdc3";
|
||||
regulator-name = "vdcdc3";
|
||||
regulator-min-microvolt = <1350000>;
|
||||
regulator-max-microvolt = <1350000>;
|
||||
regulator-min-microvolt = <1500000>;
|
||||
regulator-max-microvolt = <1500000>;
|
||||
regulator-boot-on;
|
||||
regulator-always-on;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -363,8 +363,8 @@ dcdc2: regulator-dcdc2 {
|
|||
dcdc3: regulator-dcdc3 {
|
||||
compatible = "ti,tps65218-dcdc3";
|
||||
regulator-name = "vdds_ddr";
|
||||
regulator-min-microvolt = <1350000>;
|
||||
regulator-max-microvolt = <1350000>;
|
||||
regulator-min-microvolt = <1500000>;
|
||||
regulator-max-microvolt = <1500000>;
|
||||
regulator-boot-on;
|
||||
regulator-always-on;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -358,8 +358,8 @@ dcdc2: regulator-dcdc2 {
|
|||
dcdc3: regulator-dcdc3 {
|
||||
compatible = "ti,tps65218-dcdc3";
|
||||
regulator-name = "vdcdc3";
|
||||
regulator-min-microvolt = <1350000>;
|
||||
regulator-max-microvolt = <1350000>;
|
||||
regulator-min-microvolt = <1500000>;
|
||||
regulator-max-microvolt = <1500000>;
|
||||
regulator-boot-on;
|
||||
regulator-always-on;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -122,9 +122,10 @@ pllb: pllbck {
|
|||
interrupts-extended = <&pmc AT91_PMC_LOCKB>;
|
||||
clocks = <&main>;
|
||||
reg = <1>;
|
||||
atmel,clk-input-range = <1000000 5000000>;
|
||||
atmel,clk-input-range = <1000000 32000000>;
|
||||
#atmel,pll-clk-output-range-cells = <4>;
|
||||
atmel,pll-clk-output-ranges = <70000000 130000000 1 1>;
|
||||
atmel,pll-clk-output-ranges = <80000000 200000000 0 1>,
|
||||
<190000000 240000000 2 1>;
|
||||
};
|
||||
|
||||
mck: masterck {
|
||||
|
|
|
|||
|
|
@ -193,7 +193,6 @@ lradc@80050000 {
|
|||
i2c0: i2c@80058000 {
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&i2c0_pins_a>;
|
||||
clock-frequency = <400000>;
|
||||
status = "okay";
|
||||
|
||||
sgtl5000: codec@0a {
|
||||
|
|
|
|||
|
|
@ -668,6 +668,8 @@ ethernet@gpmc {
|
|||
bank-width = <2>;
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <ðernet_pins>;
|
||||
power-gpios = <&gpio3 22 GPIO_ACTIVE_HIGH>; /* gpio86 */
|
||||
reset-gpios = <&gpio6 4 GPIO_ACTIVE_HIGH>; /* gpio164 */
|
||||
gpmc,device-width = <2>;
|
||||
gpmc,sync-clk-ps = <0>;
|
||||
gpmc,cs-on-ns = <0>;
|
||||
|
|
|
|||
|
|
@ -12,5 +12,5 @@
|
|||
#include "sama5d3_uart.dtsi"
|
||||
|
||||
/ {
|
||||
compatible = "atmel,samad31", "atmel,sama5d3", "atmel,sama5";
|
||||
compatible = "atmel,sama5d31", "atmel,sama5d3", "atmel,sama5";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -10,5 +10,5 @@
|
|||
#include "sama5d3_gmac.dtsi"
|
||||
|
||||
/ {
|
||||
compatible = "atmel,samad33", "atmel,sama5d3", "atmel,sama5";
|
||||
compatible = "atmel,sama5d33", "atmel,sama5d3", "atmel,sama5";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -12,5 +12,5 @@
|
|||
#include "sama5d3_mci2.dtsi"
|
||||
|
||||
/ {
|
||||
compatible = "atmel,samad34", "atmel,sama5d3", "atmel,sama5";
|
||||
compatible = "atmel,sama5d34", "atmel,sama5d3", "atmel,sama5";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -14,5 +14,5 @@
|
|||
#include "sama5d3_tcb1.dtsi"
|
||||
|
||||
/ {
|
||||
compatible = "atmel,samad35", "atmel,sama5d3", "atmel,sama5";
|
||||
compatible = "atmel,sama5d35", "atmel,sama5d3", "atmel,sama5";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -16,5 +16,5 @@
|
|||
#include "sama5d3_uart.dtsi"
|
||||
|
||||
/ {
|
||||
compatible = "atmel,samad36", "atmel,sama5d3", "atmel,sama5";
|
||||
compatible = "atmel,sama5d36", "atmel,sama5d3", "atmel,sama5";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
*/
|
||||
|
||||
/ {
|
||||
compatible = "atmel,samad3xcm", "atmel,sama5d3", "atmel,sama5";
|
||||
compatible = "atmel,sama5d3xcm", "atmel,sama5d3", "atmel,sama5";
|
||||
|
||||
chosen {
|
||||
bootargs = "console=ttyS0,115200 rootfstype=ubifs ubi.mtd=5 root=ubi0:rootfs";
|
||||
|
|
|
|||
|
|
@ -547,7 +547,7 @@ i2c3: i2c@ffc07000 {
|
|||
status = "disabled";
|
||||
};
|
||||
|
||||
gpio@ff708000 {
|
||||
gpio0: gpio@ff708000 {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
compatible = "snps,dw-apb-gpio";
|
||||
|
|
@ -555,7 +555,7 @@ gpio@ff708000 {
|
|||
clocks = <&per_base_clk>;
|
||||
status = "disabled";
|
||||
|
||||
gpio0: gpio-controller@0 {
|
||||
porta: gpio-controller@0 {
|
||||
compatible = "snps,dw-apb-gpio-port";
|
||||
gpio-controller;
|
||||
#gpio-cells = <2>;
|
||||
|
|
@ -567,7 +567,7 @@ gpio0: gpio-controller@0 {
|
|||
};
|
||||
};
|
||||
|
||||
gpio@ff709000 {
|
||||
gpio1: gpio@ff709000 {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
compatible = "snps,dw-apb-gpio";
|
||||
|
|
@ -575,7 +575,7 @@ gpio@ff709000 {
|
|||
clocks = <&per_base_clk>;
|
||||
status = "disabled";
|
||||
|
||||
gpio1: gpio-controller@0 {
|
||||
portb: gpio-controller@0 {
|
||||
compatible = "snps,dw-apb-gpio-port";
|
||||
gpio-controller;
|
||||
#gpio-cells = <2>;
|
||||
|
|
@ -587,7 +587,7 @@ gpio1: gpio-controller@0 {
|
|||
};
|
||||
};
|
||||
|
||||
gpio@ff70a000 {
|
||||
gpio2: gpio@ff70a000 {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
compatible = "snps,dw-apb-gpio";
|
||||
|
|
@ -595,7 +595,7 @@ gpio@ff70a000 {
|
|||
clocks = <&per_base_clk>;
|
||||
status = "disabled";
|
||||
|
||||
gpio2: gpio-controller@0 {
|
||||
portc: gpio-controller@0 {
|
||||
compatible = "snps,dw-apb-gpio-port";
|
||||
gpio-controller;
|
||||
#gpio-cells = <2>;
|
||||
|
|
|
|||
|
|
@ -29,7 +29,7 @@ osc1 {
|
|||
};
|
||||
};
|
||||
|
||||
dwmmc0@ff704000 {
|
||||
mmc0: dwmmc0@ff704000 {
|
||||
num-slots = <1>;
|
||||
broken-cd;
|
||||
bus-width = <4>;
|
||||
|
|
|
|||
|
|
@ -37,6 +37,13 @@ aliases {
|
|||
*/
|
||||
ethernet0 = &gmac1;
|
||||
};
|
||||
|
||||
regulator_3_3v: 3-3-v-regulator {
|
||||
compatible = "regulator-fixed";
|
||||
regulator-name = "3.3V";
|
||||
regulator-min-microvolt = <3300000>;
|
||||
regulator-max-microvolt = <3300000>;
|
||||
};
|
||||
};
|
||||
|
||||
&gmac1 {
|
||||
|
|
@ -68,6 +75,11 @@ rtc@68 {
|
|||
};
|
||||
};
|
||||
|
||||
&mmc0 {
|
||||
vmmc-supply = <®ulator_3_3v>;
|
||||
vqmmc-supply = <®ulator_3_3v>;
|
||||
};
|
||||
|
||||
&usb1 {
|
||||
status = "okay";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -37,6 +37,13 @@ aliases {
|
|||
*/
|
||||
ethernet0 = &gmac1;
|
||||
};
|
||||
|
||||
regulator_3_3v: 3-3-v-regulator {
|
||||
compatible = "regulator-fixed";
|
||||
regulator-name = "3.3V";
|
||||
regulator-min-microvolt = <3300000>;
|
||||
regulator-max-microvolt = <3300000>;
|
||||
};
|
||||
};
|
||||
|
||||
&gmac1 {
|
||||
|
|
@ -53,6 +60,10 @@ &gmac1 {
|
|||
rxc-skew-ps = <2000>;
|
||||
};
|
||||
|
||||
&gpio1 {
|
||||
status = "okay";
|
||||
};
|
||||
|
||||
&i2c0 {
|
||||
status = "okay";
|
||||
|
||||
|
|
@ -69,7 +80,9 @@ rtc@68 {
|
|||
};
|
||||
|
||||
&mmc0 {
|
||||
cd-gpios = <&gpio1 18 0>;
|
||||
cd-gpios = <&portb 18 0>;
|
||||
vmmc-supply = <®ulator_3_3v>;
|
||||
vqmmc-supply = <®ulator_3_3v>;
|
||||
};
|
||||
|
||||
&usb1 {
|
||||
|
|
|
|||
|
|
@ -37,6 +37,13 @@ aliases {
|
|||
*/
|
||||
ethernet0 = &gmac1;
|
||||
};
|
||||
|
||||
regulator_3_3v: vcc3p3-regulator {
|
||||
compatible = "regulator-fixed";
|
||||
regulator-name = "VCC3P3";
|
||||
regulator-min-microvolt = <3300000>;
|
||||
regulator-max-microvolt = <3300000>;
|
||||
};
|
||||
};
|
||||
|
||||
&gmac1 {
|
||||
|
|
@ -53,6 +60,11 @@ &gmac1 {
|
|||
rxc-skew-ps = <2000>;
|
||||
};
|
||||
|
||||
&mmc0 {
|
||||
vmmc-supply = <®ulator_3_3v>;
|
||||
vqmmc-supply = <®ulator_3_3v>;
|
||||
};
|
||||
|
||||
&usb1 {
|
||||
status = "okay";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -33,6 +33,13 @@ enet_ext {
|
|||
|
||||
};
|
||||
|
||||
&esdhc1 {
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&pinctrl_esdhc1>;
|
||||
bus-width = <4>;
|
||||
status = "okay";
|
||||
};
|
||||
|
||||
&fec1 {
|
||||
phy-mode = "rmii";
|
||||
pinctrl-names = "default";
|
||||
|
|
@ -42,6 +49,18 @@ &fec1 {
|
|||
|
||||
&iomuxc {
|
||||
vf610-cosmic {
|
||||
pinctrl_esdhc1: esdhc1grp {
|
||||
fsl,pins = <
|
||||
VF610_PAD_PTA24__ESDHC1_CLK 0x31ef
|
||||
VF610_PAD_PTA25__ESDHC1_CMD 0x31ef
|
||||
VF610_PAD_PTA26__ESDHC1_DAT0 0x31ef
|
||||
VF610_PAD_PTA27__ESDHC1_DAT1 0x31ef
|
||||
VF610_PAD_PTA28__ESDHC1_DATA2 0x31ef
|
||||
VF610_PAD_PTA29__ESDHC1_DAT3 0x31ef
|
||||
VF610_PAD_PTB28__GPIO_98 0x219d
|
||||
>;
|
||||
};
|
||||
|
||||
pinctrl_fec1: fec1grp {
|
||||
fsl,pins = <
|
||||
VF610_PAD_PTC9__ENET_RMII1_MDC 0x30d2
|
||||
|
|
|
|||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue