linux-stable.git/drivers/misc/mei, branch linux-5.0.y

mei: bus: move hw module get/put to probe/release

2019-03-23T19:11:12+00:00

commit b5958faa34e2f99f3475ad89c52d98dfea079d33 upstream.

Fix unbalanced module reference counting during internal reset, which
prevents the drivers unloading.
Tracking mei_me/txe modules on mei client bus via
mei_cldev_enable/disable is error prone due to possible internal
reset flow, where clients are disconnected underneath.
Moving reference counting to probe and release of mei bus client
driver solves this issue in simplest way, as each client provides only
a single connection to a client bus driver.

Cc: 
Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: hbm: clean the feature flags on link reset

2019-03-23T19:11:11+00:00

commit 37fd0b623023484ef6df79ed46f21f06ecc611ff upstream.

The list of supported functions can be altered upon link reset,
clean the flags to allow correct selections of supported
features.

Cc:  v4.19+
Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: free read cb on ctrl_wr list flush

2019-01-30T14:24:45+00:00

There is a little window during disconnection flow
when read cb is moved between lists and may be not freed.
Remove moving read cbs explicitly during flash fixes this memory
leak.

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: me: add ice lake point device id.

2019-01-30T14:24:45+00:00

Add icelake mei device id.

Cc: 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: me: add denverton innovation engine device IDs

2019-01-13T14:45:42+00:00

Add the Denverton innovation engine (IE) device ids.
The IE is an ME-like device which provides HW security
offloading.

Cc: 
Signed-off-by: Tomas Winkler 
Signed-off-by: Alexander Usyskin 
Signed-off-by: Greg Kroah-Hartman

mei: me: mark LBG devices as having dma support

2019-01-13T14:45:42+00:00

The LBG server platform sports DMA support.

Cc:  #v5.0+
Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: dma: silent the reject message

2019-01-13T14:45:42+00:00

Not all FW versions support DMA on their first release,
hence it is normal behavior to receive a reject response
upon DMA setup request.
In order to prevent confusion, the DMA setup reject message
is printed only in debug level.

Cc:  #v5.0+
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: me: mark CNP devices as having dma support

2018-11-26T15:59:48+00:00

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: bump hbm version to 2.1

2018-11-26T15:59:48+00:00

Bump HBM version to 2.1 to indicate DMA transfer support.

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: dma ring: implement transmit flow

2018-11-26T15:59:48+00:00

Implement a circular buffer on allocated system memory. Read and write
indices are stored on the control block which is also shared between the
device and the host.
Two new functions are exported from the DMA module: mei_dma_ring_write,
and mei_dma_ring_empty_slots. The former simply copy a packet on the TX
DMA circular buffer and later, returns the number of empty slots on the
TX DMA circular buffer.

Signed-off-by: Tomas Winkler 
Signed-off-by: Alexander Usyskin 
Signed-off-by: Greg Kroah-Hartman