kernel/linux.git/drivers/misc/mei/init.c, branch v6.6.132

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: log firmware status on hw_start failure.

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

In order to extend debug information log firmware status details when waiting for firmware ready status fails. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20230716081043.3092690-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman

mei: drop ready bits check after start

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

The check that hardware and host ready bits are set after start is redundant and may fail and disable driver if there is back-to-back link reset issued right after start. This happens during pxp mode transitions when firmware undergo reset. Remove these checks to eliminate such failures. 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/20220907215113.1596567-14-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman Signed-off-by: Joonas Lahtinen

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

mei: gsc: wait for reset thread on stop

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

Wait for reset work to complete before initiating stop reset flow sequence. 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/20220907215113.1596567-8-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman Signed-off-by: Joonas Lahtinen

mei: do not overwrite state on hw start

2022-02-25T11:14:01+00:00

During the hardware start sequence, do not overwrite the driver state and do not proceed with the initialization sequence if the state was changed while the driver was waiting for the start interrupt. This can happen if the driver's removal/stop procedure was triggered from the parent level while the driver is waiting for the start interrupt. This may lead to stray the reset work or the timer after driver were removed. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20220215080438.264876-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman

mei: add POWERING_DOWN into device state print

2021-12-27T09:30:48+00:00

The POWERING_DOWN state string was missing from the device states list, add it. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20211223094705.204624-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman

mei: allow clients on bus to communicate in remove callback

2021-02-06T14:48:11+00:00

Introduce new intermediate state to allow the clients on the bus to communicate with the firmware from the remove handler. This is to enable to perform a clean shutdown. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20210206144325.25682-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman

mei: abstract fw status register read.

2019-11-07T08:35:49+00:00

This is to allow working with mei devices embedded within another pci device, where mei device is represented as a platform child device and fw status registers are not necessarily resident in the device pci config space. Bump the copyright year to 2019 on the modified files. Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20191106223841.15802-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman