diff options
| author | Haim Dreyfuss <haim.dreyfuss@intel.com> | 2022-09-06 16:42:12 +0300 |
|---|---|---|
| committer | Gregory Greenman <gregory.greenman@intel.com> | 2022-09-18 14:40:15 +0300 |
| commit | 4da46a06d4430a18fddaa43b88dc1fcefdb8cf04 (patch) | |
| tree | 38e0fb4459def0e237757775642e4fb0809748e8 /drivers/net/wireless/intel/iwlwifi/fw/api/offload.h | |
| parent | 731d5aa91cf58fe7a082c0165f33ec8433d792cc (diff) | |
| download | linux-4da46a06d4430a18fddaa43b88dc1fcefdb8cf04.tar.xz | |
wifi: iwlwifi: mvm: Add support for wowlan info notification
IMR (Isolated Memory Regions) is a mechanism to protect memory regions
from unwarranted access by agents in the system that should not have access
to that memory.
When IMR is enabled, pages in the DRAM will be located within the IMR
memory space, accessible only by the device.
As a side effect, during S4 (a.k.a hibernate) the IMR memory space
is not retained.
While the DRAM is saved to the disk and restored by the OS upon resume,
the IMR, which is hidden from the OS neither saved upon suspend nor
restored upon resume.
As a consequence of the above, it turned out that commands cannot
be sent as part of the resume flow, and so after ending
d3 the FW needs to use notifications instead of cmd-resp.
The resume flow becomes asynchronous, with a series
of notifications, starting with wowlan_info_notif, through
wowlan_pkt_notif and complete the resume flow by d3_end_notif.
This patch adds the support for wowlan info notification.
The wake packet has been removed from the wowlan info struct
and will be handled in a dedicated notification.
Signed-off-by: Yedidya Benshimol <yedidya.ben.shimol@intel.com>
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20220906161827.3ce8deefd929.Ieba8610e8bb4bec788076371ae38becb4a3d20d5@changeid
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/api/offload.h')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/api/offload.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h b/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h index 5204aa94e72a..ae2263e2e293 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h @@ -3,7 +3,7 @@ * Copyright (C) 2012-2014 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH - * Copyright (C) 2021 Intel Corporation + * Copyright (C) 2021-2022 Intel Corporation */ #ifndef __iwl_fw_api_offload_h__ #define __iwl_fw_api_offload_h__ @@ -13,6 +13,11 @@ */ enum iwl_prot_offload_subcmd_ids { /** + * @WOWLAN_INFO_NOTIFICATION: Notification in &struct iwl_wowlan_info_notif + */ + WOWLAN_INFO_NOTIFICATION = 0xFD, + + /** * @STORED_BEACON_NTF: &struct iwl_stored_beacon_notif */ STORED_BEACON_NTF = 0xFF, |