linux.git/drivers/misc/mei/mei_dev.h, branch for-next

mei: me: emit error only if reset was unexpected

2023-10-18T08:01:34+00:00

GSC devices perform legal firmware initiated resets due to state transition
that may appear as unexpected to the driver. Lower the log level for those
devices to debug level and save the firmware status registers.
When the device comes out of the reset it is possible to check whether the
resets was due to a firmware error or an exception
and only than produce a warning.

Signed-off-by: Vitaly Lubart 
Signed-off-by: Tomas Winkler 
Link: https://lore.kernel.org/r/20231015080540.95922-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman

mei: docs: fix spelling errors

2023-10-18T08:01:33+00:00

Fix spelling errors in the mei code base.

Signed-off-by: Tomas Winkler 
Reviewed-by: Randy Dunlap 
Link: https://lore.kernel.org/r/20231011074301.223879-4-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman

mei: obtain firmware version only on gsc.

2023-07-30T12:17:27+00:00

Modern GSC firmwares have both static and dynamic MKHI clients.
Avoid expensive dynamic client call for firmware version retrieval,
in case the firmware version is already retrieved from the fix address
client in bus_fixup().

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Link: https://lore.kernel.org/r/20230716081043.3092690-3-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman

mei: Move uuid_le_cmp() to its only user

2023-02-03T06:23:03+00:00

There is only a single user of uuid_le_cmp() API, let's make it private
to that user.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20230202145412.87569-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2022-12-16T11:49:24+00:00

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char/misc and other driver subsystem changes
  for 6.2-rc1. Nothing earth-shattering in here at all, just a lot of
  new driver development and minor fixes.

  Highlights include:

   - fastrpc driver updates

   - iio new drivers and updates

   - habanalabs driver updates for new hardware and features

   - slimbus driver updates

   - speakup module parameters added to aid in boot time configuration

   - i2c probe_new conversions for lots of different drivers

   - other small driver fixes and additions

  One semi-interesting change in here is the increase of the number of
  misc dynamic minors available to 1048448 to handle new huge-cpu
  systems.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (521 commits)
  extcon: usbc-tusb320: Convert to i2c's .probe_new()
  extcon: rt8973: Convert to i2c's .probe_new()
  extcon: fsa9480: Convert to i2c's .probe_new()
  extcon: max77843: Replace irqchip mask_invert with unmask_base
  chardev: fix error handling in cdev_device_add()
  mcb: mcb-parse: fix error handing in chameleon_parse_gdd()
  drivers: mcb: fix resource leak in mcb_probe()
  coresight: etm4x: fix repeated words in comments
  coresight: cti: Fix null pointer error on CTI init before ETM
  coresight: trbe: remove cpuhp instance node before remove cpuhp state
  counter: stm32-lptimer-cnt: fix the check on arr and cmp registers update
  misc: fastrpc: Add dma_mask to fastrpc_channel_ctx
  misc: fastrpc: Add mmap request assigning for static PD pool
  misc: fastrpc: Safekeep mmaps on interrupted invoke
  misc: fastrpc: Add support for audiopd
  misc: fastrpc: Rework fastrpc_req_munmap
  misc: fastrpc: Use fastrpc_map_put in fastrpc_map_create on fail
  misc: fastrpc: Add fastrpc_remote_heap_alloc
  misc: fastrpc: Add reserved mem support
  misc: fastrpc: Rename audio protection domain to root
  ...

mei: add timeout to send

2022-11-23T18:43:33+00:00

When driver wakes up the firmware from the low power state,
it is sending a memory ready message.
The send is done via synchronous/blocking function to ensure
that firmware is in ready state. However, in case of firmware
undergoing reset send might be block forever.
To address this issue a timeout is added to blocking
write command on the internal bus.

Introduce the __mei_cl_send_timeout function to use instead of
__mei_cl_send in cases where timeout is required.
The mei_cl_write has only two callers and there is no need to split
it into two functions.

Signed-off-by: Alexander Usyskin 
Link: https://lore.kernel.org/r/20221116124735.2493847-2-alexander.usyskin@intel.com
Signed-off-by: Greg Kroah-Hartman

mei: bus: enable sending gsc commands

2022-10-03T18:29:08+00:00

GSC command is and extended header containing a scatter gather
list and without a data buffer. Using MEI_CL_IO_SGL flag,
the caller send the GSC command as a data and the function internally
moves it to the extended header.

Signed-off-by: Tomas Winkler 
Signed-off-by: Daniele Ceraolo Spurio 
Cc: Vitaly Lubart 
Cc: Greg Kroah-Hartman 
Reviewed-by: Greg Kroah-Hartman 
Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-3-daniele.ceraolospurio@intel.com

mei: add support to GSC extended header

2022-10-03T18:29:07+00:00

GSC extend header is of variable size and data
is provided in a sgl list inside the header
and not in the data buffers, need to enable the path.

Signed-off-by: Tomas Winkler 
Signed-off-by: Daniele Ceraolo Spurio 
Cc: Vitaly Lubart 
Cc: Greg Kroah-Hartman 
Reviewed-by: Greg Kroah-Hartman 
Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-2-daniele.ceraolospurio@intel.com

mei: gsc: setup gsc extended operational memory

2022-09-12T12:23:11+00:00

1. Retrieve extended operational memory physical pointers from the
   auxiliary device info.
2. Setup memory registers.
3. Notify firmware that the memory is ready by sending the memory
   ready command.
4. Disable PXP device if GSC is not in PXP mode.

CC: Daniele Ceraolo Spurio 
Signed-off-by: Tomas Winkler 
Signed-off-by: Alexander Usyskin 
Reviewed-by: Daniele Ceraolo Spurio 
Signed-off-by: Daniele Ceraolo Spurio 
Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-12-tomas.winkler@intel.com
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Joonas Lahtinen 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Joonas Lahtinen

mei: extend timeouts on slow devices

2022-09-12T12:23:10+00:00

Parametrize operational timeouts in order
to support slow firmware on some graphics devices.

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Reviewed-by: Daniele Ceraolo Spurio 
Signed-off-by: Daniele Ceraolo Spurio 
Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-9-tomas.winkler@intel.com
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Joonas Lahtinen