ISR and interrupt thread for handling incoming data.
e.g. read bus message, read client message, handle reset requests.
quick handler:
As MEI may share interrupt with GFX and/or USB
the HW register need to be checked and acknowledged.
thread handler:
Check if HW has data for read.
Write data to HW if possible.
May init reset flow on error
there can be two types of messages:
1) bus messages:
Management messages between MEI Driver and ME e.g.
Connect request/response,
Disconnect request/response
Enum clients request/response
Flow control request/response
those message are indicated by
ME Address/ID == 0 && Host Address/ID == 0
2) feature/client messages:
message that are sends between ME Feature/Client and
an application, the struct of the message is defined
by the ME Feature Protocol (e.g. APF Protocol, AMTHI Protocol)
those message are indicated by
ME Address/ID != 0 && Host Address/ID != 0
MEI Initialization state machine is also managed by this patch.
After MEI Reset is preform:
Send Start request
wait for answer
Send Enumerate Clients request
wait for answer
Send Get Client property for each client request
wait for answers
Init Done.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Itzhak Tzeel-Krupp <itzhak.tzeel-krupp@intel.com>
Signed-off-by: Oren Weil <oren.jer.weil@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
contains module entries and PCI driver and char device
definitions (using file_operations, pci_driver struts).
The HW interface is exposed on PCI interface.
PCI:
The MEI HW resources are memory map 32 bit registers
(Host and ME Status Registers and Data Registers)
and interrupt (shared, with Intel GFX on some chipsets
and USB2 controller on others).
The device is part of the chipsets and cannot be hotplugged.
The MEI device present is determined by BIOS configuration.
Probe:
The driver starts the init MEI flow, that is explained
in the patch "MEI driver init flow" [06/10],
then schedules a timer that handles
timeouts and watchdog heartbeats.
Remove:
The driver closes all connections and stops the watchdog.
The driver expose char device that supports:
open, release, write, read, ioctl, poll.
Open:
Upon open the driver allocates HOST data structure
on behalf of application which will resides in the file's
private data and assign a host ID number which
will identify messages between driver client instance
and MEI client.
The driver also checks readiness of the device. The number
of simultaneously opened instances is limited to 253.
(255 - (amthi + watchdog))
Release:
In release the driver sends a Disconnect Command to
ME feature and clean all the data structs.
IOCTL:
MEI adds new IOCTL: (IOCTL_MEI_CONNECT_CLIENT)
The IOCTL links the current file descriptor to ME feature.
This is done by sending MEI Bus command: 'hbm_client_connect_request'
to the ME and waiting for an answer :'hbm_client_connect_response'.
Upon answer reception the driver updates its and HOST data
structures in file structure to indicate that the file
descriptor is associated to ME feature.
Each ME feature is represented by UUID which is given as
an input parameter to the IOCTL, upon success connect command the
IOCTL will return the ME feature properties.
ME can reject CONNECT commands due to several reasons,
most common are:
Invalid UUID ME or feature does not exists in ME.
No More Connection allowed to this is feature,
usually only one connection is allowed.
Write:
Upon write, the driver splits the user data into several MEI
messages up to 512 bytes each and sends it to the HW.
If the user wants to write data to AMTHI ME feature then the
drivers routes the messages through AMTHI queues.
Read:
In read the driver checks is a connection exists to
current file descriptor and then wait until a data is available.
Message might be received (by interrupt from ME) in multiple chunks.
Only complete message is released to the application.
Poll:
Nothing special here. Waiting for see if we have
data available for reading.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Itzhak Tzeel-Krupp <itzhak.tzeel-krupp@intel.com>
Signed-off-by: Oren Weil <oren.jer.weil@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
fix keucr transport.c other coding style but not from checkpatch.pl.
replace ternary conditional "?:" with if/else
Signed-off-by: Cho, Yu-Chen <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix keucr msscsi.c coding style.
Remove externs ,and move MS_SCSIIrp to end,
because there are not necessary to add extern for MS_SCSIIrp function.
Signed-off-by: Cho, Yu-Chen <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Now that we have dealt with this issue differently, get rid of the
old mechanism.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The util module expects that the util channels are fully initialized
when the module loads. To deal with the race condition which can result
in a NULL pointer dereferencing if the util module were to load before
all the util channels are fully initialized, in commit:
commit: 8b5d6d3bd3
Author: Haiyang Zhang <haiyangz@microsoft.com>
Date: Fri May 28 23:22:44 2010 +000
code was introduced in the vmbus driver to ensure that all the
util channels were fully initialized before returning from the load
of the vmbus driver. This solution has several problems: if for whatever
reason, any util channel were to fail to initialize, vmbus driver would
wait indefinitely. We deal with this synchronization issue very differently
in this patch.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In preparation for getting rid of util channel synchronization based on
counting util channels, introduce state in struct vmbus_channel to
track util services.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The ps_BoardInfo pointer in the device private data is redundant as we
can just use the this_board macro to access the same data, as is done
elsewhere in the code. Get rid of the pointer and change the code to
use the this_board macro instead.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The drivers for ADDI-DATA cards can override some static parameters for
the board type using information read from EEPROM. Unfortunately, they
currently write the parameters from the EEPROM back to the shared,
read-only board data! The problem has been masked during compilation by
type-casting away the const-ness of the data.
This patch changes the code to use an area in the private data for the
board instance to hold the parameters read from EEPROM (after
initializing the parameters from the static board data). It also
changes the type-casts to the read-only data to preserve the const
qualifier.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The Advantech PCI-1751 has a 8254 counter chip on board. Add it to the
device as a counter subdevice. Apparently the counter can generate
interrupts although the driver does not currently use this capability.
Original patch by Ivan Russkih (Иван Русских) <vanekrus at gmail dot
com>.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This seems to be the result of patches ab366c1a and 1027f476 crossing each
other. Patch ab366c1a adds calls to usb_put_intf and usb_put_dev at the
end of the function line6_probe, in the error handling code, while patch
1027f476 moves the calls to the corresponding get function from the
beginning to the end of line6_probe, making the calls to put in the error
handling code unnecessary.
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
implementing the cfg ops that gets called when iw dev wlan0
link is issued by user. The ops that needs to be implemented
is get_station.
kvalo: check the mac address, remove signal_pending(), use ARRAY_SIZE()
and fix style issues
Signed-off-by: Naveen Singh <nsingh@atheros.com>
Signed-off-by: Kalle Valo <kalle.valo@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
A call to cfg80211_get_bss hould be accompanied by a call to
cfg80211_put_bss in error-handling code.
A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
local idexpression struct cfg80211_bss * x;
expression ra,rr;
position p1,p2;
@@
x = cfg80211_get_bss@p1(...)
... when != x = rr
when != cfg80211_put_bss(x,...)
when != if (...) { ... cfg80211_put_bss(x,...) ...}
if(...) { ... when != x = ra
when forall
when != cfg80211_put_bss(x,...)
\(return <+...x...+>; \| return@p2...; \) }
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
cocci.print_main("cfg80211_get_bss",p1)
cocci.print_secs("return",p2)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
to clarify the intention:
On Sun, May 15, 2011 at 09:54:26PM +0200, Arend van Spriel wrote:
> On 05/15/2011 08:10 PM, Hauke Mehrtens wrote:
[...]
>> Why don't you use the correct pointer type here instead of casting then
>> around and the parameter names are meaningless too.
>>
>> static bool cb_del_ampdu_pkt(struct sk_buff *mpdu, struct
>> cb_del_ampdu_pars *ampdu_pars)
[...]
> Actually this is a generic callback mechanism in which an additional
> parameter can be passed, which can be of *any* type hence a void pointer
> seems justified here and a meaningless name is used. I do agree that the
> txi parameter will always be a struct sk_buff and should be indicated as
> such.
Reported-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Clemens Noss <cnoss@gmx.de>
Acked-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
bcm_pktq_flush and related functions only ever get 0 or a pointer for
arg, so make it a pointer.
This might fix a crash on 64bit.
Signed-off-by: Clemens Noss <cnoss@gmx.de>
Acked-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There are a standard set of cflags that are used in each makefile so
let's set those in EXTRA_CFLAGS and enforce them for the entire project.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The warnings were for unused parameters, so __attribute__((unused))
has been added until it can be determined they are truly unneeded.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Move libusbip version setting to configure.ac so that version
numbers can be found in a single location.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove unneeded comments; change deprecated flag INCLUDE to
AM_CPPFLAGS and put -D option in *_CPPFLAGS; and use "simply
expanded variables" in assignments.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
All parameters have been quoted; and autoscan was rerun so new
headers, types, and functions were added. The deprecated macros
AM_CONFIG_HEADER and AM_PROG_LIBTOOL were changed to
AC_CONFIG_HEADERS and LT_INIT, respectively. The AS_HELP_STRING
macro is used to avoid arbitrary spacing for proper help menu
alignment, and AS_CASE to avoid quoting issues. And finally, the
macros were realigned to allow mere mortals the ability to read them.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Change all references to the kernel modules to correspond with the new
names.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Now make netvsc_drv_init the module init function.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In preparation to eliminating netvsc_init(), move the dmi_check code
to netvsc_drv_init().
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Move the dmi table declaration to earlier in the file.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Now, get rid of the unused type struct netvsc_driver.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Get rid of the unused function drv_to_netvscdrv().
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Get rid of the empty function rndis_filter_init().
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
After the cleanup that has been done, some code in rndis_filter.c
is no longer needed; get rid of it.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In preparation to getting rid of struct netvsc_driver, make
the variable netvsc_drv an instance of struct hv_driver.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Now get rid of unused state (ring_buf_size) from struct netvsc_driver.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Since we pass ring size information differently, this assignment is
not needed.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Get the ring size information from struct netvsc_device_info.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
